README.md

All_Leetcode_Q_20190610

#	国内外目前OJ(Online Judge)平台	链接	公司采用(待完善)
1	Leetcode	https://leetcode-cn.com/ https://leetcode.com/	只刷题?
2	hackerrank	https://www.hackerrank.com/dashboard	BCG、Akuna
3	Lintcode	https://www.lintcode.com/	?
4	牛客	https://www.nowcoder.com	拼多多、大疆、网易、腾讯
5	赛码	https://www.acmcoder.com/index	京东、美团
6	amcatglobal	https://amcatglobal.aspiringminds.com/	亚马逊

供参考的一些时间表（点击查看完整列表）：

#	标题	难度	Acceptance	频率	English Link	接受	提交	赞	踩
1	两数之和	简单	0.44	2.09	https://leetcode.com/problems/two-sum	1839799	4160810	10890	368
2	两数相加	中等	0.31	1.67	https://leetcode.com/problems/add-two-numbers	889091	2851363	5252	1353
3	无重复字符的最长子串	中等	0.28	1.85	https://leetcode.com/problems/longest-substring-without-repeating-characters	944953	3324704	5604	313
4	寻找两个有序数组的中位数	难	0.26	1.65	https://leetcode.com/problems/median-of-two-sorted-arrays	442060	1671600	4362	590
5	最长回文子串	中等	0.27	1.93	https://leetcode.com/problems/longest-palindromic-substring	566322	2070485	3660	354
6	Z 字形变换	中等	0.32	0.94	https://leetcode.com/problems/zigzag-conversion	322584	1008796	1044	3256
7	整数反转	简单	0.25	1.27	https://leetcode.com/problems/reverse-integer	702876	2775521	2192	3344
8	字符串转换整数 (atoi)	中等	0.14	1.05	https://leetcode.com/problems/string-to-integer-atoi	370221	2525416	950	6031
9	回文数	简单	0.43	1.18	https://leetcode.com/problems/palindrome-number	589770	1356568	1439	1304
10	正则表达式匹配	难	0.25	1.36	https://leetcode.com/problems/regular-expression-matching	307713	1215688	2644	516
11	盛最多水的容器	中等	0.44	1.24	https://leetcode.com/problems/container-with-most-water	378211	845066	3311	439
12	整数转罗马数字	中等	0.51	0.74	https://leetcode.com/problems/integer-to-roman	232849	456069	590	1863
13	罗马数字转整数	简单	0.52	0.75	https://leetcode.com/problems/roman-to-integer	422983	806224	1256	2658
14	最长公共前缀	简单	0.33	0.83	https://leetcode.com/problems/longest-common-prefix	472715	1407948	1378	1322
15	三数之和	中等	0.24	1.61	https://leetcode.com/problems/3sum	558572	2321019	3834	427
16	最接近的三数之和	中等	0.45	0.83	https://leetcode.com/problems/3sum-closest	350184	765119	1115	82
17	电话号码的字母组合	中等	0.41	0.61	https://leetcode.com/problems/letter-combinations-of-a-phone-number	394313	945668	2205	297
18	四数之和	中等	0.3	0.97	https://leetcode.com/problems/4sum
19	删除链表的倒数第N个节点	中等	0.34	0.96	https://leetcode.com/problems/remove-nth-node-from-end-of-list
20	有效的括号	简单	0.36	1.32	https://leetcode.com/problems/valid-parentheses	600931	1642960	2934	145
21	合并两个有序链表	简单	0.47	1.43	https://leetcode.com/problems/merge-two-sorted-lists	591500	1247176	2257	320
22	括号生成	中等	0.55	1.03	https://leetcode.com/problems/generate-parentheses	343615	623473	2794	172
23	合并K个排序链表	难	0.34	1.19	https://leetcode.com/problems/merge-k-sorted-lists	395129	1141058	2491	162
24	两两交换链表中的节点	中等	0.44	0.72	https://leetcode.com/problems/swap-nodes-in-pairs	318606	710541	1148	102
25	K 个一组翻转链表	难	0.36	1.59	https://leetcode.com/problems/reverse-nodes-in-k-group	186046	508786	1176	247
26	删除排序数组中的重复项	简单	0.4	0.67	https://leetcode.com/problems/remove-duplicates-from-sorted-array	599790	1469613	1525	3275
27	移除元素	简单	0.44	0.31	https://leetcode.com/problems/remove-element	416180	932365	833	1782
28	实现strStr()	简单	0.32	0.67	https://leetcode.com/problems/implement-strstr	433392	1350846	887	1309
29	两数相除	中等	0.16	0.36	https://leetcode.com/problems/divide-two-integers	197660	1223448	677	3213
30	串联所有单词的子串	难	0.23	0.57	https://leetcode.com/problems/substring-with-concatenation-of-all-words	134061	567133	520	891
31	下一个排列	中等	0.3	0.83	https://leetcode.com/problems/next-permutation	239912	786108	1782	557
32	最长有效括号	难	0.25	0.95	https://leetcode.com/problems/longest-valid-parentheses	192060	751524	1857	90
33	搜索旋转排序数组	中等	0.32	1.18	https://leetcode.com/problems/search-in-rotated-sorted-array	419943	1276069	2434	313
34	在排序数组中查找元素的第一个和最后一个位置	中等	0.33	0.52	https://leetcode.com/problems/find-first-and-last-position-of-element-in-sorted-array	304649	906177	1583	86
35	搜索插入位置	简单	0.4	0.3	https://leetcode.com/problems/search-insert-position	405923	992906	1327	177
36	有效的数独	中等	0.43	0.5	https://leetcode.com/problems/valid-sudoku	238282	551594	842	314
37	解数独	难	0.37	1.02	https://leetcode.com/problems/sudoku-solver	130216	350885	871	59
38	报数	简单	0.4	0.64	https://leetcode.com/problems/count-and-say	285740	703570	779	5979
39	组合总和	中等	0.48	0.78	https://leetcode.com/problems/combination-sum	346716	711774	2021	58
40	组合总和 II	中等	0.41	0.48	https://leetcode.com/problems/combination-sum-ii	223149	534412	836	45
41	缺失的第一个正数	难	0.28	1	https://leetcode.com/problems/first-missing-positive	215074	743158	1673	574
42	接雨水	难	0.43	1.74	https://leetcode.com/problems/trapping-rain-water	296767	685171	3615	66
43	字符串相乘	中等	0.3	1.17	https://leetcode.com/problems/multiply-strings	203117	660175	999	462
44	通配符匹配	难	0.22	0.83	https://leetcode.com/problems/wildcard-matching	177982	778669	1056	73
45	跳跃游戏 II	难	0.28	1.34	https://leetcode.com/problems/jump-game-ii	171326	609431	1174	60
46	全排列	中等	0.55	1.42	https://leetcode.com/problems/permutations	383728	692968	2031	59
47	全排列 II	中等	0.4	0.8	https://leetcode.com/problems/permutations-ii	245431	603968	1005	44
48	旋转图像	中等	0.48	0.88	https://leetcode.com/problems/rotate-image	254488	522690	1565	151
49	字母异位词分组	中等	0.47	0.51	https://leetcode.com/problems/group-anagrams	341014	726004	1657	109
50	Pow(x, n)	中等	0.28	0.62	https://leetcode.com/problems/powx-n	323710	1156069	855	2089
51	N皇后	难	0.39	1.18	https://leetcode.com/problems/n-queens	142692	361395	927	43
52	N皇后 II	难	0.52	0.32	https://leetcode.com/problems/n-queens-ii	100193	192224	272	114
53	最大子序和	简单	0.43	1.62	https://leetcode.com/problems/maximum-subarray	538231	1232388	4344	146
54	螺旋矩阵	中等	0.3	1.27	https://leetcode.com/problems/spiral-matrix	236597	774710	1085	412
55	跳跃游戏	中等	0.32	0.77	https://leetcode.com/problems/jump-game	267040	835405	1932	196
56	合并区间	中等	0.35	1.24	https://leetcode.com/problems/merge-intervals	352931	988545	2096	161
57	插入区间	难	0.31	0.98	https://leetcode.com/problems/insert-interval	178321	570455	825	101
58	最后一个单词的长度	简单	0.32	0.41	https://leetcode.com/problems/length-of-last-word	270304	837588	373	1563
59	螺旋矩阵 II	中等	0.46	1.13	https://leetcode.com/problems/spiral-matrix-ii	137313	293784	442	80
60	第k个排列	中等	0.33	0.38	https://leetcode.com/problems/permutation-sequence	138817	418558	832	223
61	旋转链表	中等	0.27	0.55	https://leetcode.com/problems/rotate-list	193910	712863	609	814
62	不同路径	中等	0.47	0.84	https://leetcode.com/problems/unique-paths	291580	611019	1579	109
63	不同路径 II	中等	0.33	0.62	https://leetcode.com/problems/unique-paths-ii	202512	604824	862	120
64	最小路径和	中等	0.47	0.64	https://leetcode.com/problems/minimum-path-sum	232807	495166	1363	39
65	有效数字	难	0.14	1.39	https://leetcode.com/problems/valid-number	124746	889486	430	3199
66	加一	简单	0.41	0.29	https://leetcode.com/problems/plus-one	396385	960132	870	1540
67	二进制求和	简单	0.39	0.57	https://leetcode.com/problems/add-binary	306137	779667	973	191
68	文本左右对齐	难	0.23	0.7	https://leetcode.com/problems/text-justification	97434	416955	357	1008
69	x 的平方根	简单	0.31	0.73	https://leetcode.com/problems/sqrtx	371336	1183154	767	1366
70	爬楼梯	简单	0.44	1.46	https://leetcode.com/problems/climbing-stairs	408843	923949	2208	80
71	简化路径	中等	0.28	0.89	https://leetcode.com/problems/simplify-path	151328	525012	429	1191
72	编辑距离	难	0.37	1.84	https://leetcode.com/problems/edit-distance	175645	463819	2089	30
73	矩阵置零	中等	0.39	0.44	https://leetcode.com/problems/set-matrix-zeroes	211023	528935	1056	192
74	搜索二维矩阵	中等	0.34	0.83	https://leetcode.com/problems/search-a-2d-matrix	225466	645864	834	98
75	颜色分类	中等	0.42	0.52	https://leetcode.com/problems/sort-colors	320969	759606	1637	156
76	最小覆盖子串	难	0.3	0.93	https://leetcode.com/problems/minimum-window-substring	239645	775739	2294	155
77	组合	中等	0.47	0.77	https://leetcode.com/problems/combinations	204223	427066	776	46
78	子集	中等	0.53	0.95	https://leetcode.com/problems/subsets	369736	697355	1936	50
79	单词搜索	中等	0.31	0.65	https://leetcode.com/problems/word-search	285661	910715	1764	86
80	删除排序数组中的重复项 II	中等	0.4	0.18	https://leetcode.com/problems/remove-duplicates-from-sorted-array-ii	202894	501829	654	537
81	搜索旋转排序数组 II	中等	0.32	0.57	https://leetcode.com/problems/search-in-rotated-sorted-array-ii	172641	529091	662	312
82	删除排序链表中的重复元素 II	中等	0.33	0.86	https://leetcode.com/problems/remove-duplicates-from-sorted-list-ii	183457	553944	827	72
83	删除排序链表中的重复元素	简单	0.42	0.68	https://leetcode.com/problems/remove-duplicates-from-sorted-list	331045	776117	764	79
84	柱状图中最大的矩形	难	0.31	0.99	https://leetcode.com/problems/largest-rectangle-in-histogram	175924	563103	1889	53
85	最大矩形	难	0.33	1.45	https://leetcode.com/problems/maximal-rectangle	122394	366179	1439	51
86	分隔链表	中等	0.37	0.31	https://leetcode.com/problems/partition-list	164856	441521	661	180
87	扰乱字符串	难	0.31	0.87	https://leetcode.com/problems/scramble-string	90814	287052	281	479
88	合并两个有序数组	简单	0.35	1.12	https://leetcode.com/problems/merge-sorted-array	368427	1028721	1095	2777
89	格雷编码	中等	0.45	0.52	https://leetcode.com/problems/gray-code	134596	293597	378	1176
90	子集 II	中等	0.42	0.34	https://leetcode.com/problems/subsets-ii	204569	481131	876	50
91	解码方法	中等	0.22	0.66	https://leetcode.com/problems/decode-ways	262911	1175744	1394	1605
92	反转链表 II	中等	0.35	1.68	https://leetcode.com/problems/reverse-linked-list-ii	195888	559354	1204	88
93	复原IP地址	中等	0.31	1.55	https://leetcode.com/problems/restore-ip-addresses	140663	445710	669	268
94	二叉树的中序遍历	中等	0.56	0.91	https://leetcode.com/problems/binary-tree-inorder-traversal	466503	821139	1621	71
95	不同的二叉搜索树 II	中等	0.35	0.55	https://leetcode.com/problems/unique-binary-search-trees-ii	139561	389824	1232	113
96	不同的二叉搜索树	中等	0.46	0.71	https://leetcode.com/problems/unique-binary-search-trees	200968	433659	1710	68
97	交错字符串	难	0.28	0.51	https://leetcode.com/problems/interleaving-string	112206	399726	772	36
98	验证二叉搜索树	中等	0.25	0.54	https://leetcode.com/problems/validate-binary-search-tree	410204	1591329	1951	294
99	恢复二叉搜索树	难	0.34	0.17	https://leetcode.com/problems/recover-binary-search-tree	118624	341708	770	47
100	相同的树	简单	0.5	0.34	https://leetcode.com/problems/same-tree	380739	760291	1148	34
101	对称二叉树	简单	0.43	0.75	https://leetcode.com/problems/symmetric-tree	405899	932639	2237	46
102	二叉树的层次遍历	中等	0.48	0.88	https://leetcode.com/problems/binary-tree-level-order-traversal	381591	784712	1483	40
103	二叉树的锯齿形层次遍历	中等	0.41	0.58	https://leetcode.com/problems/binary-tree-zigzag-level-order-traversal	221618	529396	953	59
104	二叉树的最大深度	简单	0.6	0.8	https://leetcode.com/problems/maximum-depth-of-binary-tree	514118	847498	1323	51
105	从前序与中序遍历序列构造二叉树	中等	0.41	0.97	https://leetcode.com/problems/construct-binary-tree-from-preorder-and-inorder-traversal	225879	547042	1717	49
106	从中序与后序遍历序列构造二叉树	中等	0.39	0.31	https://leetcode.com/problems/construct-binary-tree-from-inorder-and-postorder-traversal	154534	391884	858	18
107	二叉树的层次遍历 II	简单	0.46	0.47	https://leetcode.com/problems/binary-tree-level-order-traversal-ii	227803	485659	729	138
108	将有序数组转换为二叉搜索树	简单	0.5	0.48	https://leetcode.com/problems/convert-sorted-array-to-binary-search-tree	264760	520164	1152	117
109	有序链表转换二叉搜索树	中等	0.41	0.51	https://leetcode.com/problems/convert-sorted-list-to-binary-search-tree	177272	432892	1006	67
110	平衡二叉树	简单	0.41	0.58	https://leetcode.com/problems/balanced-binary-tree	323597	788282	1245	111
111	二叉树的最小深度	简单	0.35	0.4	https://leetcode.com/problems/minimum-depth-of-binary-tree	297249	841123	724	389
112	路径总和	简单	0.37	0.79	https://leetcode.com/problems/path-sum	316547	836310	943	306
113	路径总和 II	中等	0.4	0.36	https://leetcode.com/problems/path-sum-ii	233375	572390	889	33
114	二叉树展开为链表	中等	0.42	0.76	https://leetcode.com/problems/flatten-binary-tree-to-linked-list	239440	563124	1467	189
115	不同的子序列	难	0.35	0	https://leetcode.com/problems/distinct-subsequences	106874	304356	684	36
116	填充每个节点的下一个右侧节点指针	中等	0.38	0.17	https://leetcode.com/problems/populating-next-right-pointers-in-each-node	246478	648490	1012	86
117	填充每个节点的下一个右侧节点指针 II	中等	0.34	0.12	https://leetcode.com/problems/populating-next-right-pointers-in-each-node-ii	184464	535094	875	118
118	杨辉三角	简单	0.46	0.98	https://leetcode.com/problems/pascals-triangle	255901	554263	707	79
119	杨辉三角 II	简单	0.43	0.32	https://leetcode.com/problems/pascals-triangle-ii	205192	469511	476	166
120	三角形最小路径和	中等	0.39	0.51	https://leetcode.com/problems/triangle	182962	463721	1120	121
121	买卖股票的最佳时机	简单	0.47	1.14	https://leetcode.com/problems/best-time-to-buy-and-sell-stock	505415	1067673	2637	124
122	买卖股票的最佳时机 II	简单	0.52	0.65	https://leetcode.com/problems/best-time-to-buy-and-sell-stock-ii	328055	630537	1000	1290
123	买卖股票的最佳时机 III	难	0.33	0.94	https://leetcode.com/problems/best-time-to-buy-and-sell-stock-iii	150126	444767	1066	57
124	二叉树中的最大路径和	难	0.3	1.25	https://leetcode.com/problems/binary-tree-maximum-path-sum	194454	646103	1600	117
125	验证回文串	简单	0.31	0.64	https://leetcode.com/problems/valid-palindrome	359040	1150229	589	1727
126	单词接龙 II	难	0.17	0.97	https://leetcode.com/problems/word-ladder-ii
127	单词接龙	中等	0.24	0.38	https://leetcode.com/problems/word-ladder	260866	1080154	1443	801
128	最长连续序列	难	0.41	0.89	https://leetcode.com/problems/longest-consecutive-sequence	208987	500461	1845	89
129	求根到叶子节点数字之和	中等	0.42	0.56	https://leetcode.com/problems/sum-root-to-leaf-numbers	186234	437356	670	24
130	被围绕的区域	中等	0.22	0.7	https://leetcode.com/problems/surrounded-regions	146087	636760	751	426
131	分割回文串	中等	0.41	0.49	https://leetcode.com/problems/palindrome-partitioning	165022	402356	906	37
132	分割回文串 II	难	0.27	0.57	https://leetcode.com/problems/palindrome-partitioning-ii	103459	376588	575	23
133	克隆图	中等	0.26	0.54	https://leetcode.com/problems/clone-graph	218674	819726	784	840
134	加油站	中等	0.33	0.63	https://leetcode.com/problems/gas-station	144487	425971	749	294
135	分发糖果	难	0.28	1.99	https://leetcode.com/problems/candy	103036	362231	498	115
136	只出现一次的数字	简单	0.6	0.83	https://leetcode.com/problems/single-number	467518	775808	2462	93
137	只出现一次的数字 II	中等	0.46	0.69	https://leetcode.com/problems/single-number-ii	167411	363803	814	260
138	复制带随机指针的链表	中等	0.27	0.87	https://leetcode.com/problems/copy-list-with-random-pointer	249269	913960	1566	424
139	单词拆分	中等	0.35	0.53	https://leetcode.com/problems/word-break	340169	960364	2212	122
140	单词拆分 II	难	0.27	0.72	https://leetcode.com/problems/word-break-ii	159718	583599	929	241
141	环形链表	简单	0.37	0.79	https://leetcode.com/problems/linked-list-cycle	409161	1105058	1562	171
142	环形链表 II	中等	0.32	0.44	https://leetcode.com/problems/linked-list-cycle-ii	216705	673242	1428	105
143	重排链表	中等	0.31	0.92	https://leetcode.com/problems/reorder-list	155946	503693	877	65
144	二叉树的前序遍历	中等	0.51	0.73	https://leetcode.com/problems/binary-tree-preorder-traversal	341170	663093	772	39
145	二叉树的后序遍历	难	0.48	0.46	https://leetcode.com/problems/binary-tree-postorder-traversal	262277	539316	899	44
146	LRU缓存机制	中等	0.25	1.9	https://leetcode.com/problems/lru-cache	301470	1176622	2925	103
147	对链表进行插入排序	中等	0.37	0.77	https://leetcode.com/problems/insertion-sort-list	150245	402070	361	415
148	排序链表	中等	0.35	0.98	https://leetcode.com/problems/sort-list	186556	525403	1451	75
149	直线上最多的点数	难	0.15	1.49	https://leetcode.com/problems/max-points-on-a-line	120499	763156	470	1289
150	逆波兰表达式求值	中等	0.32	0.46	https://leetcode.com/problems/evaluate-reverse-polish-notation	163569	506273	517	348
151	翻转字符串里的单词	中等	0.16	0.73	https://leetcode.com/problems/reverse-words-in-a-string	282948	1681517	558	2266
152	乘积最大子序列	中等	0.29	0.72	https://leetcode.com/problems/maximum-product-subarray	212597	725173	2080	92
153	寻找旋转排序数组中的最小值	中等	0.43	0.75	https://leetcode.com/problems/find-minimum-in-rotated-sorted-array	285911	664899	976	161
154	寻找旋转排序数组中的最小值 II	难	0.39	0.61	https://leetcode.com/problems/find-minimum-in-rotated-sorted-array-ii	131151	333194	443	141
155	最小栈	简单	0.37	0.71	https://leetcode.com/problems/min-stack	304622	819452	1781	184
156	上下翻转二叉树	中等	0.5	0	https://leetcode.com/problems/binary-tree-upside-down	8
157	用 Read4 读取 N 个字符	简单	0.29	0	https://leetcode.com/problems/read-n-characters-given-read4	0
158	用 Read4 读取 N 个字符 II	难	0.26	0	https://leetcode.com/problems/read-n-characters-given-read4-ii-call-multiple-times	6
159	至多包含两个不同字符的最长子串	难	0.47	0.98	https://leetcode.com/problems/longest-substring-with-at-most-two-distinct-characters	7
160	相交链表	简单	0.34	0.73	https://leetcode.com/problems/intersection-of-two-linked-lists	307236	903803	2106	180
161	相隔为 1 的编辑距离	中等	0.31	0	https://leetcode.com/problems/one-edit-distance	4
162	寻找峰值	中等	0.41	0.6	https://leetcode.com/problems/find-peak-element	240011	581446	827	1310
163	缺失的区间	中等	0.23	0	https://leetcode.com/problems/missing-ranges	4
164	最大间距	难	0.32	0.69	https://leetcode.com/problems/maximum-gap	70370	216048	486	126
165	比较版本号	中等	0.23	1.17	https://leetcode.com/problems/compare-version-numbers	137707	582511	288	1093
166	分数到小数	中等	0.19	0.36	https://leetcode.com/problems/fraction-to-recurring-decimal	88276	452855	451	1014
167	两数之和 II - 输入有序数组	简单	0.5	0.75	https://leetcode.com/problems/two-sum-ii-input-array-is-sorted	249776	495092	894	377
168	Excel表列名称	简单	0.29	0.57	https://leetcode.com/problems/excel-sheet-column-title	173159	596774	717	143
169	求众数	简单	0.52	0.75	https://leetcode.com/problems/majority-element	387300	734045	1663	145
170	两数之和 III - 数据结构设计	简单	0.3	0	https://leetcode.com/problems/two-sum-iii-data-structure-design	2
171	Excel表列序号	简单	0.51	0.31	https://leetcode.com/problems/excel-sheet-column-number	221301	428990	549	102
172	阶乘后的零	简单	0.37	0.46	https://leetcode.com/problems/factorial-trailing-zeroes
173	二叉搜索树迭代器	中等	0.48	0.25	https://leetcode.com/problems/binary-search-tree-iterator	206141	422642	1346	240
174	地下城游戏	难	0.27	1.02	https://leetcode.com/problems/dungeon-game	66375	244279	686	17
175	组合两个表	简单	0.52	1.63	https://leetcode.com/problems/combine-two-tables	164200	316036	652	93
176	第二高的薪水	简单	0.27	1.5	https://leetcode.com/problems/second-highest-salary/	132926	487169	495	260
177	第N高的薪水	中等	0.26	1.04	https://leetcode.com/problems/nth-highest-salary	66141	250748	242	187
178	分数排名	中等	0.36	1.76	https://leetcode.com/problems/rank-scores	64464	175436	473	58
179	最大数	中等	0.25	1.23	https://leetcode.com/problems/largest-number	130260	504016	1010	137
180	连续出现的数字	中等	0.33	0.97	https://leetcode.com/problems/consecutive-numbers	54839	162517	237	66
181	超过经理收入的员工	简单	0.48	0.89	https://leetcode.com/problems/employees-earning-more-than-their-managers	111266	229097	357	40
182	查找重复的电子邮箱	简单	0.54	0.85	https://leetcode.com/problems/duplicate-emails	115785	211016	276	16
183	从不订购的客户	简单	0.45	0.56	https://leetcode.com/problems/customers-who-never-order	104708	232894	235	29
184	部门工资最高的员工	中等	0.29	1.78	https://leetcode.com/problems/department-highest-salary	64750	222997	283	71
185	部门工资前三高的员工	难	0.26	2.32	https://leetcode.com/problems/department-top-three-salaries	44117	169325	337	79
186	翻转字符串里的单词 II	中等	0.37	0	https://leetcode.com/problems/reverse-words-in-a-string-ii
187	重复的DNA序列	中等	0.36	0.8	https://leetcode.com/problems/repeated-dna-sequences	126395	350025	440	177
188	买卖股票的最佳时机 IV	难	0.26	0.8	https://leetcode.com/problems/best-time-to-buy-and-sell-stock-iv	87539	331979	736	49
189	旋转数组	简单	0.3	0.43	https://leetcode.com/problems/rotate-array	301651	998440	1324	591
190	颠倒二进制位	简单	0.31	0.19	https://leetcode.com/problems/reverse-bits	182932	581809	559	179
191	位1的个数	简单	0.43	0.43	https://leetcode.com/problems/number-of-1-bits	259873	599914	433	383
192	统计词频	中等	0.26	2.07	https://leetcode.com/problems/word-frequency	18975	70788	132	72
193	有效电话号码	简单	0.25	1.58	https://leetcode.com/problems/valid-phone-numbers	24804	98678	93	219
194	转置文件	中等	0.22	1.81	https://leetcode.com/problems/transpose-file	9803	43003	47	131
195	第十行	简单	0.33	1.28	https://leetcode.com/problems/tenth-line	38645	114037	121	103
196	删除重复的电子邮箱	简单	0.33	1.24	https://leetcode.com/problems/delete-duplicate-emails	72723	220699	271	328
197	上升的温度	简单	0.34	0.76	https://leetcode.com/problems/rising-temperature	77853	223349	241	98
198	打家劫舍	简单	0.41	0.77	https://leetcode.com/problems/house-robber	323971	789317	2525	78
199	二叉树的右视图	中等	0.48	1.58	https://leetcode.com/problems/binary-tree-right-side-view	169626	352996	1051	45
200	岛屿数量	中等	0.41	1.18	https://leetcode.com/problems/number-of-islands	359570	863720	2616	94
201	数字范围按位与	中等	0.35	0.82	https://leetcode.com/problems/bitwise-and-of-numbers-range	82007	228126	404	57
202	快乐数	简单	0.45	0.74	https://leetcode.com/problems/happy-number	235488	519548	867	220
203	移除链表元素	简单	0.35	0.88	https://leetcode.com/problems/remove-linked-list-elements	227052	633633	834	50
204	计数质数	简单	0.29	0.95	https://leetcode.com/problems/count-primes	239109	822901	1056	399
205	同构字符串	简单	0.37	0.34	https://leetcode.com/problems/isomorphic-strings	205266	548622	754	213
206	反转链表	简单	0.54	1.91	https://leetcode.com/problems/reverse-linked-list	595945	1085353	2341	63
207	课程表	中等	0.37	0.34	https://leetcode.com/problems/course-schedule	219392	578104	1776	86
208	实现 Trie (前缀树)	中等	0.38	0.91	https://leetcode.com/problems/implement-trie-prefix-tree	180632	467385	1594	33
209	长度最小的子数组	中等	0.34	0.66	https://leetcode.com/problems/minimum-size-subarray-sum	178433	510799	1110	70
210	课程表 II	中等	0.34	0.15	https://leetcode.com/problems/course-schedule-ii	149240	427063	929	63
211	添加与搜索单词 - 数据结构设计	中等	0.3	0.25	https://leetcode.com/problems/add-and-search-word-data-structure-design	115718	380117	834	54
212	单词搜索 II	难	0.28	0.84	https://leetcode.com/problems/word-search-ii	113794	395524	1105	68
213	打家劫舍 II	中等	0.35	0.42	https://leetcode.com/problems/house-robber-ii	116613	330435	873	30
214	最短回文串	难	0.27	1.29	https://leetcode.com/problems/shortest-palindrome	75151	272079	638	78
215	数组中的第K个最大元素	中等	0.48	1.2	https://leetcode.com/problems/kth-largest-element-in-an-array	378568	789180	2029	168
216	组合总和 III	中等	0.51	0.14	https://leetcode.com/problems/combination-sum-iii	122657	237483	584	29
217	存在重复元素	简单	0.52	0.42	https://leetcode.com/problems/contains-duplicate	339136	651567	395	515
218	天际线问题	难	0.31	1.27	https://leetcode.com/problems/the-skyline-problem	93192	293847	1179	62
219	存在重复元素 II	简单	0.35	0.11	https://leetcode.com/problems/contains-duplicate-ii	199160	563486	489	605
220	存在重复元素 III	中等	0.19	0.3	https://leetcode.com/problems/contains-duplicate-iii	92862	470055	662	634
221	最大正方形	中等	0.33	1.07	https://leetcode.com/problems/maximal-square	131063	395918	1275	33
222	完全二叉树的节点个数	中等	0.33	0.76	https://leetcode.com/problems/count-complete-tree-nodes	122059	360642	962	132
223	矩形面积	中等	0.35	1.23	https://leetcode.com/problems/rectangle-area
224	基本计算器	难	0.32	1.43	https://leetcode.com/problems/basic-calculator	108113	329569	728	89
225	用队列实现栈	简单	0.39	0.92	https://leetcode.com/problems/implement-stack-using-queues	130230	330806	330	418
226	翻转二叉树	简单	0.58	1	https://leetcode.com/problems/invert-binary-tree	328740	563606	1723	28
227	基本计算器 II	中等	0.33	0.76	https://leetcode.com/problems/basic-calculator-ii	110563	329657	689	109
228	汇总区间	中等	0.36	0.44	https://leetcode.com/problems/summary-ranges	132059	366752	366	372
229	求众数 II	中等	0.32	0.6	https://leetcode.com/problems/majority-element-ii	101659	316167	851	103
230	二叉搜索树中第K小的元素	中等	0.51	0.58	https://leetcode.com/problems/kth-smallest-element-in-a-bst	225536	437014	1157	39
231	2的幂	简单	0.42	0.38	https://leetcode.com/problems/power-of-two	229786	547370	444	122
232	用栈实现队列	简单	0.43	0.98	https://leetcode.com/problems/implement-queue-using-stacks
233	数字 1 的个数	难	0.3	1.35	https://leetcode.com/problems/number-of-digit-one	41100	135959	173	442
234	回文链表	简单	0.36	0.8	https://leetcode.com/problems/palindrome-linked-list	262098	724868	1645	244
235	二叉搜索树的最近公共祖先	简单	0.44	0.76	https://leetcode.com/problems/lowest-common-ancestor-of-a-binary-search-tree	284015	633770	1052	79
236	二叉树的最近公共祖先	中等	0.37	1.04	https://leetcode.com/problems/lowest-common-ancestor-of-a-binary-tree	281559	751392	1927	135
237	删除链表中的节点	简单	0.53	0.5	https://leetcode.com/problems/delete-node-in-a-linked-list	287831	535873	737	3467
238	除自身以外数组的乘积	中等	0.55	0.22	https://leetcode.com/problems/product-of-array-except-self	260713	472610	2266	189
239	滑动窗口最大值	难	0.38	0.66	https://leetcode.com/problems/sliding-window-maximum	160235	418910	1680	100
240	搜索二维矩阵 II	中等	0.4	0.77	https://leetcode.com/problems/search-a-2d-matrix-ii	181760	444447	1508	43
241	为运算表达式设计优先级	中等	0.5	0.23	https://leetcode.com/problems/different-ways-to-add-parentheses	73859	147687	899	45
242	有效的字母异位词	简单	0.52	0.19	https://leetcode.com/problems/valid-anagram	343415	656874	712	106
243	最短单词距离	简单	0.57	0.71	https://leetcode.com/problems/shortest-word-distance
244	最短单词距离 II	中等	0.47	0	https://leetcode.com/problems/shortest-word-distance-ii	3
245	最短单词距离 III	中等	0.53	0	https://leetcode.com/problems/shortest-word-distance-iii
246	中心对称数	简单	0.42	0	https://leetcode.com/problems/strobogrammatic-number
247	中心对称数 II	中等	0.44	0	https://leetcode.com/problems/strobogrammatic-number-ii	2
248	中心对称数 III	难	0.36	0	https://leetcode.com/problems/strobogrammatic-number-iii	3
249	移位字符串分组	中等	0.48	0	https://leetcode.com/problems/group-shifted-strings	3
250	统计同值子树	中等	0.48	0	https://leetcode.com/problems/count-univalue-subtrees	3
251	展开二维向量	中等	0.43	0	https://leetcode.com/problems/flatten-2d-vector
252	会议室	简单	0.52	0	https://leetcode.com/problems/meeting-rooms	2
253	会议室 II	中等	0.42	0.7	https://leetcode.com/problems/meeting-rooms-ii	8
254	因子的组合	中等	0.44	0	https://leetcode.com/problems/factor-combinations	2
255	验证前序遍历序列二叉搜索树	中等	0.43	0	https://leetcode.com/problems/verify-preorder-sequence-in-binary-search-tree	5
256	粉刷房子	简单	0.49	0.75	https://leetcode.com/problems/paint-house	5
257	二叉树的所有路径	简单	0.46	0.33	https://leetcode.com/problems/binary-tree-paths	227984	494493	883	68
258	各位相加	简单	0.54	0.97	https://leetcode.com/problems/add-digits	239360	441927	455	790
259	较小的三数之和	中等	0.44	0	https://leetcode.com/problems/3sum-smaller
260	只出现一次的数字 III	中等	0.57	1.31	https://leetcode.com/problems/single-number-iii	107435	188169	847	76
261	以图判树	中等	0.39	0	https://leetcode.com/problems/graph-valid-tree	5
262	行程和用户	难	0.25	0.33	https://leetcode.com/problems/trips-and-users	33806	134434	199	155
263	丑数	简单	0.4	0.21	https://leetcode.com/problems/ugly-number	157908	388621	231	430
264	丑数 II	中等	0.36	0.49	https://leetcode.com/problems/ugly-number-ii	105097	288351	903	63
265	粉刷房子 II	难	0.41	0	https://leetcode.com/problems/paint-house-ii
266	回文排列	简单	0.6	0.89	https://leetcode.com/problems/palindrome-permutation	0
267	回文排列 II	中等	0.33	0	https://leetcode.com/problems/palindrome-permutation-ii	6
268	缺失数字	简单	0.48	0.36	https://leetcode.com/problems/missing-number
269	火星词典	难	0.31	0	https://leetcode.com/problems/alien-dictionary
270	最接近的二叉搜索树值	简单	0.43	0	https://leetcode.com/problems/closest-binary-search-tree-value	3
271	字符串的编码与解码	中等	0.26	0	https://leetcode.com/problems/encode-and-decode-strings	3
272	最接近的二叉搜索树值 II	难	0.45	0	https://leetcode.com/problems/closest-binary-search-tree-value-ii
273	整数转换英文表示	难	0.24	0.55	https://leetcode.com/problems/integer-to-english-words	104069	426844	534	1474
274	H指数	中等	0.34	0.22	https://leetcode.com/problems/h-index	123111	355625	393	674
275	H指数 II	中等	0.35	0.4	https://leetcode.com/problems/h-index-ii	80149	225940	204	367
276	栅栏涂色	简单	0.36	0.95	https://leetcode.com/problems/paint-fence
277	搜寻名人	中等	0.36	1.09	https://leetcode.com/problems/find-the-celebrity	7
278	第一个错误的版本	简单	0.3	0.32	https://leetcode.com/problems/first-bad-version	225063	748967	644	400
279	完全平方数	中等	0.42	0.49	https://leetcode.com/problems/perfect-squares	184569	439214	1451	117
280	摆动排序	中等	0.61	0	https://leetcode.com/problems/wiggle-sort	4
281	锯齿迭代器	中等	0.56	0	https://leetcode.com/problems/zigzag-iterator	3
282	给表达式添加运算符	难	0.32	1.31	https://leetcode.com/problems/expression-add-operators	68985	210318	689	95
283	移动零	简单	0.54	0.61	https://leetcode.com/problems/move-zeroes	470951	865800	2043	74
284	顶端迭代器	中等	0.4	0	https://leetcode.com/problems/peeking-iterator
285	二叉搜索树中的顺序后继	中等	0.34	0	https://leetcode.com/problems/inorder-successor-in-bst	2
286	墙与门	中等	0.49	0	https://leetcode.com/problems/walls-and-gates	5
287	寻找重复数	中等	0.49	0.76	https://leetcode.com/problems/find-the-duplicate-number	191477	385092	2476	273
288	单词的唯一缩写	中等	0.2	0	https://leetcode.com/problems/unique-word-abbreviation	1
289	生命游戏	中等	0.45	0	https://leetcode.com/problems/game-of-life	113975	250244	882	180
290	单词规律	简单	0.35	0.62	https://leetcode.com/problems/word-pattern	141647	404071	630	77
291	单词规律 II	难	0.4	0	https://leetcode.com/problems/word-pattern-ii
292	Nim 游戏	简单	0.55	1.01	https://leetcode.com/problems/nim-game	184705	331871	367	1146
293	翻转游戏	简单	0.58	0	https://leetcode.com/problems/flip-game	4
294	翻转游戏 II	中等	0.48	0	https://leetcode.com/problems/flip-game-ii	3
295	数据流的中位数	难	0.36	0.97	https://leetcode.com/problems/find-median-from-data-stream	109274	297395	1148	23
296	最佳的碰头地点	难	0.54	0	https://leetcode.com/problems/best-meeting-point	2
297	二叉树的序列化与反序列化	难	0.41	0.67	https://leetcode.com/problems/serialize-and-deserialize-binary-tree	185764	452648	1489	70
298	二叉树最长连续序列	中等	0.44	0	https://leetcode.com/problems/binary-tree-longest-consecutive-sequence	3
299	猜数字游戏	中等	0.39	0.75	https://leetcode.com/problems/bulls-and-cows	97374	246262	328	342
300	最长上升子序列	中等	0.4	1.15	https://leetcode.com/problems/longest-increasing-subsequence	224619	549735	2518	58
301	删除无效的括号	难	0.39	1.48	https://leetcode.com/problems/remove-invalid-parentheses	125815	319552	1386	59
302	包含全部黑色像素的最小矩形	难	0.49	0	https://leetcode.com/problems/smallest-rectangle-enclosing-black-pixels	2
303	区域和检索 - 数组不可变	简单	0.38	0.44	https://leetcode.com/problems/range-sum-query-immutable	139408	366039	456	761
304	二维区域和检索 - 矩阵不可变	中等	0.32	0	https://leetcode.com/problems/range-sum-query-2d-immutable	70032	216243	448	119
305	岛屿数量 II	难	0.41	0	https://leetcode.com/problems/number-of-islands-ii	3
306	累加数	中等	0.28	0.71	https://leetcode.com/problems/additive-number	40716	143584	200	297
307	区域和检索 - 数组可修改	中等	0.28	0.76	https://leetcode.com/problems/range-sum-query-mutable	72200	251042	696	59
308	二维区域和检索 - 可变	难	0.32	0	https://leetcode.com/problems/range-sum-query-2d-mutable	2
309	最佳买卖股票时机含冷冻期	中等	0.44	0.69	https://leetcode.com/problems/best-time-to-buy-and-sell-stock-with-cooldown	91921	208519	1335	47
310	最小高度树	中等	0.3	0	https://leetcode.com/problems/minimum-height-trees	64974	215314	967	59
311	稀疏矩阵的乘法	中等	0.56	0	https://leetcode.com/problems/sparse-matrix-multiplication	6
312	戳气球	难	0.47	1.77	https://leetcode.com/problems/burst-balloons	64005	135188	1329	37
313	超级丑数	中等	0.41	0.93	https://leetcode.com/problems/super-ugly-number	60375	145691	356	93
314	二叉树的垂直遍历	中等	0.41	0	https://leetcode.com/problems/binary-tree-vertical-order-traversal	2
315	计算右侧小于当前元素的个数	难	0.38	0.49	https://leetcode.com/problems/count-of-smaller-numbers-after-self
316	去除重复字母	难	0.32	1.66	https://leetcode.com/problems/remove-duplicate-letters	57118	175459	725	78
317	离建筑物最近的距离	难	0.37	0	https://leetcode.com/problems/shortest-distance-from-all-buildings	3
318	最大单词长度乘积	中等	0.48	0	https://leetcode.com/problems/maximum-product-of-word-lengths	79817	164531	507	47
319	灯泡开关	中等	0.44	0.73	https://leetcode.com/problems/bulb-switcher	59577	135531	266	611
320	列举单词的全部缩写	中等	0.48	0	https://leetcode.com/problems/generalized-abbreviation	3
321	拼接最大数	难	0.25	0.64	https://leetcode.com/problems/create-maximum-number	30470	119909	389	145
322	零钱兑换	中等	0.3	1.33	https://leetcode.com/problems/coin-change	198733	651506	1765	76
323	无向图中连通分量的数目	中等	0.52	0	https://leetcode.com/problems/number-of-connected-components-in-an-undirected-graph	2
324	摆动排序 II	中等	0.28	0.91	https://leetcode.com/problems/wiggle-sort-ii	59799	213622	610	331
325	和等于 k 的最长子数组长度	中等	0.44	0	https://leetcode.com/problems/maximum-size-subarray-sum-equals-k	6
326	3的幂	简单	0.41	0.11	https://leetcode.com/problems/power-of-three	185390	444844	278	1023
327	区间和的个数	难	0.32	0.7	https://leetcode.com/problems/count-of-range-sum	31661	96599	379	56
328	奇偶链表	中等	0.49	0.74	https://leetcode.com/problems/odd-even-linked-list	148679	301741	745	221
329	矩阵中的最长递增路径	难	0.4	1.61	https://leetcode.com/problems/longest-increasing-path-in-a-matrix	88164	219955	984	18
330	按要求补齐数组	难	0.33	0.74	https://leetcode.com/problems/patching-array	31337	93916	314	56
331	验证二叉树的前序序列化	中等	0.38	0.41	https://leetcode.com/problems/verify-preorder-serialization-of-a-binary-tree	58416	151187	493	30
332	重新安排行程	中等	0.31	0.46	https://leetcode.com/problems/reconstruct-itinerary	79934	253540	733	486
333	最大 BST 子树	中等	0.33	0	https://leetcode.com/problems/largest-bst-subtree	4
334	递增的三元子序列	中等	0.39	0.12	https://leetcode.com/problems/increasing-triplet-subsequence	93183	235377	815	81
335	路径交叉	难	0.27	0	https://leetcode.com/problems/self-crossing	19232	71182	77	261
336	回文对	难	0.31	0	https://leetcode.com/problems/palindrome-pairs	70097	225957	775	101
337	打家劫舍 III	中等	0.48	0.64	https://leetcode.com/problems/house-robber-iii	103453	215013	1512	31
338	比特位计数	中等	0.64	0.13	https://leetcode.com/problems/counting-bits	169300	261403	1371	106
339	嵌套列表权重和	简单	0.68	0	https://leetcode.com/problems/nested-list-weight-sum	4
340	至多包含 K 个不同字符的最长子串	难	0.39	0	https://leetcode.com/problems/longest-substring-with-at-most-k-distinct-characters
341	扁平化嵌套列表迭代器	中等	0.48	0.26	https://leetcode.com/problems/flatten-nested-list-iterator	111241	231723	948	388
342	4的幂	简单	0.4	0.36	https://leetcode.com/problems/power-of-four	114134	283302	315	142
343	整数拆分	中等	0.47	0.48	https://leetcode.com/problems/integer-break	79800	166852	572	166
344	反转字符串	简单	0.63	0.86	https://leetcode.com/problems/reverse-string	433199	683882	763	492
345	反转字符串中的元音字母	简单	0.41	0.41	https://leetcode.com/problems/reverse-vowels-of-a-string	156726	377412	387	705
346	数据流中的移动平均值	简单	0.66	0.56	https://leetcode.com/problems/moving-average-from-data-stream	3
347	前K个高频元素	中等	0.55	0.8	https://leetcode.com/problems/top-k-frequent-elements/	207779	377562	1535	97
348	判定井字棋胜负	中等	0.49	0	https://leetcode.com/problems/design-tic-tac-toe	3
349	两个数组的交集	简单	0.54	0.67	https://leetcode.com/problems/intersection-of-two-arrays	222242	405575	400	803
350	两个数组的交集 II	简单	0.47	0.54	https://leetcode.com/problems/intersection-of-two-arrays-ii	203978	425859	692	242
351	安卓系统手势解锁	中等	0.45	0	https://leetcode.com/problems/android-unlock-patterns	8
352	将数据流变为多个不相交区间	难	0.43	0	https://leetcode.com/problems/data-stream-as-disjoint-intervals	24200	55586	181	53
353	贪吃蛇	中等	0.3	0	https://leetcode.com/problems/design-snake-game	2
354	俄罗斯套娃信封问题	难	0.34	0.75	https://leetcode.com/problems/russian-doll-envelopes	44871	132117	563	28
355	设计推特	中等	0.27	0	https://leetcode.com/problems/design-twitter	34584	126290	475	138
356	直线镜像	中等	0.3	0	https://leetcode.com/problems/line-reflection	2
357	计算各个位数不同的数字个数	中等	0.46	0.24	https://leetcode.com/problems/count-numbers-with-unique-digits	61878	131818	236	615
358	K 距离间隔重排字符串	难	0.32	0	https://leetcode.com/problems/rearrange-string-k-distance-apart	1
359	日志速率限制器	简单	0.65	1	https://leetcode.com/problems/logger-rate-limiter
360	有序转化数组	中等	0.46	0	https://leetcode.com/problems/sort-transformed-array
361	轰炸敌人	中等	0.43	1.31	https://leetcode.com/problems/bomb-enemy
362	敲击计数器	中等	0.59	0	https://leetcode.com/problems/design-hit-counter
363	矩形区域不超过 K 的最大数值和	难	0.35	0.83	https://leetcode.com/problems/max-sum-of-rectangle-no-larger-than-k
364	加权嵌套序列和 II	中等	0.57	0	https://leetcode.com/problems/nested-list-weight-sum-ii	5
365	水壶问题	中等	0.28	1.32	https://leetcode.com/problems/water-and-jug-problem	28014	96770	157	500
366	寻找完全二叉树的叶子节点	中等	0.65	0	https://leetcode.com/problems/find-leaves-of-binary-tree	5
367	有效的完全平方数	简单	0.39	0.24	https://leetcode.com/problems/valid-perfect-square	111359	279569	450	106
368	最大整除子集	中等	0.34	0.34	https://leetcode.com/problems/largest-divisible-subset	46642	133944	539	28
369	给单链表加一	中等	0.56	0	https://leetcode.com/problems/plus-one-linked-list	1
370	区间加法	中等	0.6	0	https://leetcode.com/problems/range-addition	3
371	两整数之和	简单	0.5	0.6	https://leetcode.com/problems/sum-of-two-integers	135304	265734	761	1339
372	超级次方	中等	0.35	1.03	https://leetcode.com/problems/super-pow	27728	77793	127	561
373	查找和最小的K对数字	中等	0.33	0	https://leetcode.com/problems/find-k-pairs-with-smallest-sums	66831	197410	685	56
374	猜数字大小	简单	0.39	0.46	https://leetcode.com/problems/guess-number-higher-or-lower	107929	273235	227	1150
375	猜数字大小 II	中等	0.37	0.4	https://leetcode.com/problems/guess-number-higher-or-lower-ii	44229	117237	507	718
376	摆动序列	中等	0.37	0.44	https://leetcode.com/problems/wiggle-subsequence	47972	128052	530	46
377	组合总和 Ⅳ	中等	0.43	0.21	https://leetcode.com/problems/combination-sum-iv	85584	195709	795	80
378	有序矩阵中第K小的元素	中等	0.49	0.7	https://leetcode.com/problems/kth-smallest-element-in-a-sorted-matrix	110291	222718	1181	84
379	电话目录管理系统	中等	0.41	0	https://leetcode.com/problems/design-phone-directory	3
380	常数时间插入、删除和获取随机元素	中等	0.42	0.37	https://leetcode.com/problems/insert-delete-getrandom-o1	114884	268005	1113	88
381	O(1) 时间插入、删除和获取随机元素 - 允许重复	难	0.32	1.56	https://leetcode.com/problems/insert-delete-getrandom-o1-duplicates-allowed	42245	132080	424	44
382	链表随机节点	中等	0.49	1.6	https://leetcode.com/problems/linked-list-random-node	53054	107549	372	110
383	赎金信	简单	0.49	0.11	https://leetcode.com/problems/ransom-note	112717	225718	322	116
384	打乱数组	中等	0.5	0.82	https://leetcode.com/problems/shuffle-an-array	77360	154457	259	637
385	迷你语法分析器	中等	0.31	0.8	https://leetcode.com/problems/mini-parser
386	字典序排数	中等	0.46	1.41	https://leetcode.com/problems/lexicographical-numbers	40410	87449	363	58
387	字符串中的第一个唯一字符	简单	0.5	0.65	https://leetcode.com/problems/first-unique-character-in-a-string	271589	542081	999	78
388	文件的最长绝对路径	中等	0.39	0.88	https://leetcode.com/problems/longest-absolute-file-path	64685	164927	418	824
389	找不同	简单	0.53	0.26	https://leetcode.com/problems/find-the-difference	145679	274249	501	228
390	消除游戏	中等	0.43	0.55	https://leetcode.com/problems/elimination-game
391	完美矩形	难	0.28	0	https://leetcode.com/problems/perfect-rectangle	18400	65200	228	49
392	判断子序列	中等	0.46	0.33	https://leetcode.com/problems/is-subsequence	88841	189822	552	127
393	UTF-8 编码验证	中等	0.35	1.28	https://leetcode.com/problems/utf-8-validation	35522	98936	140	656
394	字符串解码	中等	0.45	1.6	https://leetcode.com/problems/decode-string	104762	232840	1484	84
395	至少有K个重复字符的最长子串	中等	0.38	0.81	https://leetcode.com/problems/longest-substring-with-at-least-k-repeating-characters	47625	122981	728	63
396	旋转函数	中等	0.35	0.56	https://leetcode.com/problems/rotate-function	35067	99808	254	83
397	整数替换	中等	0.31	0.35	https://leetcode.com/problems/integer-replacement	40698	129419	210	235
398	随机数索引	中等	0.5	0.94	https://leetcode.com/problems/random-pick-index	55860	111611	264	457
399	除法求值	中等	0.47	0.38	https://leetcode.com/problems/evaluate-division	80659	169421	1297	104
400	第N个数字	简单	0.3	0.75	https://leetcode.com/problems/nth-digit	47842	157698	255	824
401	二进制手表	简单	0.45	0	https://leetcode.com/problems/binary-watch	64055	141295	369	617
402	移掉K位数字	中等	0.26	1.38	https://leetcode.com/problems/remove-k-digits	61156	229255	885	56
403	青蛙过河	难	0.36	1.44	https://leetcode.com/problems/frog-jump	51761	143068	507	60
404	左叶子之和	简单	0.49	0.09	https://leetcode.com/problems/sum-of-left-leaves	126877	258180	658	75
405	数字转换为十六进制数	简单	0.41	0	https://leetcode.com/problems/convert-a-number-to-hexadecimal	47710	113745	258	69
406	根据身高重建队列	中等	0.59	0.27	https://leetcode.com/problems/queue-reconstruction-by-height	79934	133470	1582	177
407	接雨水 II	难	0.39	1.8	https://leetcode.com/problems/trapping-rain-water-ii	27313	69475	684	18
408	有效单词缩写	简单	0.29	0	https://leetcode.com/problems/valid-word-abbreviation	1
409	最长回文串	简单	0.48	0.67	https://leetcode.com/problems/longest-palindrome	97782	203409	525	56
410	分割数组的最大值	难	0.42	1.65	https://leetcode.com/problems/split-array-largest-sum	42508	100071	721	40
411	最短特异单词缩写	难	0.35	0	https://leetcode.com/problems/minimum-unique-word-abbreviation	1
412	Fizz Buzz	简单	0.59	0.13	https://leetcode.com/problems/fizz-buzz	206192	346197	525	783
413	等差数列划分	中等	0.55	0.77	https://leetcode.com/problems/arithmetic-slices	63012	112777	591	115
414	第三大的数	简单	0.29	0.3	https://leetcode.com/problems/third-maximum-number	93202	321311	378	688
415	字符串相加	简单	0.43	1.5	https://leetcode.com/problems/add-strings	97443	222811	408	144
416	分割等和子集	中等	0.4	0.67	https://leetcode.com/problems/partition-equal-subset-sum	88070	216395	1232	35
417	太平洋大西洋水流问题	中等	0.37	0	https://leetcode.com/problems/pacific-atlantic-water-flow	44373	118317	671	102
418	屏幕可显示句子的数量	中等	0.31	0	https://leetcode.com/problems/sentence-screen-fitting	1
419	甲板上的战舰	中等	0.65	0.91	https://leetcode.com/problems/battleships-in-a-board	62679	95273	428	331
420	强密码检验器	难	0.17	2.46	https://leetcode.com/problems/strong-password-checker	6391	36863	85	361
421	数组中两个数的最大异或值	中等	0.51	1.36	https://leetcode.com/problems/maximum-xor-of-two-numbers-in-an-array	37237	72831	690	145
422	有效的单词方块	简单	0.36	0	https://leetcode.com/problems/valid-word-square	2
423	从英文中重建数字	中等	0.45	1.24	https://leetcode.com/problems/reconstruct-original-digits-from-english	19168	42017	119	424
424	替换后的最长重复字符	中等	0.44	0	https://leetcode.com/problems/longest-repeating-character-replacement	31511	71344	536	46
425	单词方块	难	0.44	0	https://leetcode.com/problems/word-squares	1
426	将二叉搜索树转化为排序的双向链表	中等	0.52	1.18	https://leetcode.com/problems/convert-binary-search-tree-to-sorted-doubly-linked-list	6
427	建立四叉树	简单	0.57	0	https://leetcode.com/problems/construct-quad-tree	11551	20278	126	304
428	序列化和反序列化 N 叉树	难	0.53	0	https://leetcode.com/problems/serialize-and-deserialize-n-ary-tree	1
429	N叉树的层序遍历	简单	0.59	0.42	https://leetcode.com/problems/n-ary-tree-level-order-traversal	33485	56210	242	31
430	扁平化多级双向链表	中等	0.42	0.31	https://leetcode.com/problems/flatten-a-multilevel-doubly-linked-list	23072	54429	348	55
431	将 N 叉树编码为二叉树	难	0.63	0	https://leetcode.com/problems/encode-n-ary-tree-to-binary-tree	1
432	全 O(1) 的数据结构	难	0.29	1.52	https://leetcode.com/problems/all-oone-data-structure	18456	62399	337	47
433	最小基因变化	中等	0.38	0.8	https://leetcode.com/problems/minimum-genetic-mutation	21582	56569	260	35
434	字符串中的单词数	简单	0.36	0.41	https://leetcode.com/problems/number-of-segments-in-a-string	56144	152065	142	560
435	无重叠区间	中等	0.41	0.6	https://leetcode.com/problems/non-overlapping-intervals	39147	94139	486	21
436	寻找右区间	中等	0.42	0.72	https://leetcode.com/problems/find-right-interval	26481	61832	209	97
437	路径总和 III	简单	0.42	0.35	https://leetcode.com/problems/path-sum-iii	106922	249422	1858	88
438	找到字符串中所有字母异位词	简单	0.37	0.42	https://leetcode.com/problems/find-all-anagrams-in-a-string	125285	335505	1591	123
439	三元表达式解析器	中等	0.53	0	https://leetcode.com/problems/ternary-expression-parser
440	字典序的第K小数字	难	0.26	2.13	https://leetcode.com/problems/k-th-smallest-in-lexicographical-order	8337	31361	170	31
441	排列硬币	简单	0.38	0.27	https://leetcode.com/problems/arranging-coins	70069	184454	196	461
442	数组中重复的数据	中等	0.61	1.21	https://leetcode.com/problems/find-all-duplicates-in-an-array	99127	162340	1080	114
443	压缩字符串	简单	0.37	1.18	https://leetcode.com/problems/string-compression	52977	140176	364	1126
444	序列重建	中等	0.2	0	https://leetcode.com/problems/sequence-reconstruction	2
445	两数相加 II	中等	0.5	1.13	https://leetcode.com/problems/add-two-numbers-ii	91874	183057	731	97
446	等差数列划分 II - 子序列	难	0.3	0	https://leetcode.com/problems/arithmetic-slices-ii-subsequence	14712	48719	265	40
447	回旋镖的数量	简单	0.49	0.6	https://leetcode.com/problems/number-of-boomerangs	54738	109646	296	447
448	找到所有数组中消失的数字	简单	0.53	0.46	https://leetcode.com/problems/find-all-numbers-disappeared-in-an-array	154761	289471	1642	157
449	序列化和反序列化二叉搜索树	中等	0.47	0.69	https://leetcode.com/problems/serialize-and-deserialize-bst	59226	125271	629	46
450	删除二叉搜索树中的节点	中等	0.4	0.7	https://leetcode.com/problems/delete-node-in-a-bst	66724	166636	909	58
451	根据字符出现频率排序	中等	0.56	0.45	https://leetcode.com/problems/sort-characters-by-frequency	94724	168697	717	62
452	用最少数量的箭引爆气球	中等	0.46	0.97	https://leetcode.com/problems/minimum-number-of-arrows-to-burst-balloons	38534	82919	487	25
453	最小移动次数使数组元素相等	简单	0.49	0.22	https://leetcode.com/problems/minimum-moves-to-equal-array-elements	57695	117298	368	588
454	四数相加 II	中等	0.5	0.5	https://leetcode.com/problems/4sum-ii	66721	131555	678	58
455	分发饼干	简单	0.48	0.57	https://leetcode.com/problems/assign-cookies	64096	132269	318	65
456	132模式	中等	0.27	0.92	https://leetcode.com/problems/132-pattern	28743	104988	639	39
457	环形数组循环	中等	0.27	0.82	https://leetcode.com/problems/circular-array-loop	18607	67322	149	922
458	可怜的小猪	难	0.45	1.8	https://leetcode.com/problems/poor-pigs	15574	34288	295	719
459	重复的子字符串	简单	0.4	0.82	https://leetcode.com/problems/repeated-substring-pattern	80697	201972	796	96
460	LFU缓存	难	0.28	2.15	https://leetcode.com/problems/lfu-cache	40133	138758	664	75
461	汉明距离	简单	0.7	0.21	https://leetcode.com/problems/hamming-distance	240377	341582	1305	115
462	最少移动次数使数组元素相等 II	中等	0.52	0.59	https://leetcode.com/problems/minimum-moves-to-equal-array-elements-ii	35053	66894	352	30
463	岛屿的周长	简单	0.61	0.93	https://leetcode.com/problems/island-perimeter	134955	221178	1088	81
464	我能赢吗	中等	0.27	1.1	https://leetcode.com/problems/can-i-win	36026	132219	612	103
465	最优账单平衡	难	0.42	0	https://leetcode.com/problems/optimal-account-balancing	5
466	统计重复个数	难	0.27	1.57	https://leetcode.com/problems/count-the-repetitions	7869	28763	103	80
467	环绕字符串中唯一的子字符串	中等	0.34	0.65	https://leetcode.com/problems/unique-substrings-in-wraparound-string	18421	54173	363	59
468	验证IP地址	中等	0.21	1.85	https://leetcode.com/problems/validate-ip-address	27732	130057	122	740
469	凸多边形	中等	0.35	0	https://leetcode.com/problems/convex-polygon	1
470	用 Rand7() 实现 Rand10()	中等	0.44	0.96	https://leetcode.com/problems/implement-rand10-using-rand7	9083	20219	188	74
471	编码最短长度的字符串	难	0.45	2.23	https://leetcode.com/problems/encode-string-with-shortest-length	1
472	连接词	难	0.34	0.87	https://leetcode.com/problems/concatenated-words	21624	62280	249	62
473	火柴拼正方形	中等	0.35	1	https://leetcode.com/problems/matchsticks-to-square	24653	68665	322	41
474	一和零	中等	0.39	0.55	https://leetcode.com/problems/ones-and-zeroes	31266	78637	566	135
475	供暖器	简单	0.31	1.25	https://leetcode.com/problems/heaters	48226	151488	488	509
476	数字的补数	简单	0.62	0.6	https://leetcode.com/problems/number-complement	107737	172709	549	73
477	汉明距离总和	中等	0.48	0.42	https://leetcode.com/problems/total-hamming-distance	47300	96630	525	37
478	在圆内随机生成点	中等	0.36	0.89	https://leetcode.com/problems/generate-random-point-in-a-circle	5295	14436	88	141
479	最大回文数乘积	难	0.27	1.23	https://leetcode.com/problems/largest-palindrome-product	14867	54227	72	1217
480	滑动窗口中位数	难	0.32	1.07	https://leetcode.com/problems/sliding-window-median
481	神奇字符串	中等	0.46	0	https://leetcode.com/problems/magical-string	18642	40362	82	536
482	密钥格式化	简单	0.4	0	https://leetcode.com/problems/license-key-formatting	80383	196283	291	490
483	最小好进制	难	0.34	1.79	https://leetcode.com/problems/smallest-good-base	9911	29000	88	246
484	寻找排列	中等	0.57	0	https://leetcode.com/problems/find-permutation	4
485	最大连续1的个数	简单	0.55	0.59	https://leetcode.com/problems/max-consecutive-ones	138523	251621	364	312
486	预测赢家	中等	0.46	1.07	https://leetcode.com/problems/predict-the-winner	50103	107118	977	66
487	最大连续1的个数 II	中等	0.46	0	https://leetcode.com/problems/max-consecutive-ones-ii
488	祖玛游戏	难	0.39	0	https://leetcode.com/problems/zuma-game	9848	25256	129	130
489	扫地机器人	难	0.64	0	https://leetcode.com/problems/robot-room-cleaner
490	迷宫	中等	0.47	0	https://leetcode.com/problems/the-maze	3
491	递增子序列	中等	0.42	0.75	https://leetcode.com/problems/increasing-subsequences	32376	76973	414	77
492	构造矩形	简单	0.48	0.49	https://leetcode.com/problems/construct-the-rectangle	45344	93068	133	202
493	翻转对	难	0.23	1.07	https://leetcode.com/problems/reverse-pairs	24566	106106	510	79
494	目标和	中等	0.45	0.21	https://leetcode.com/problems/target-sum	96835	213855	1392	66
495	提莫攻击	中等	0.52	0.3	https://leetcode.com/problems/teemo-attacking	36586	70000	244	507
496	下一个更大元素 I	简单	0.59	0.48	https://leetcode.com/problems/next-greater-element-i	97175	163009	793	1301
497	非重叠矩形中的随机点	中等	0.35	1.23	https://leetcode.com/problems/random-point-in-non-overlapping-rectangles	6620	18502	94	129
498	对角线遍历	中等	0.45	0.52	https://leetcode.com/problems/diagonal-traverse	43344	95530	354	227
499	迷宫 III	难	0.37	0	https://leetcode.com/problems/the-maze-iii
500	键盘行	简单	0.62	0.25	https://leetcode.com/problems/keyboard-row	88992	142947	397	497
501	二叉搜索树中的众数	简单	0.39	0.51	https://leetcode.com/problems/find-mode-in-binary-search-tree	56756	143459	554	217
502	IPO	难	0.37	0.88	https://leetcode.com/problems/ipo	11710	31050	197	19
503	下一个更大元素 II	中等	0.51	0.24	https://leetcode.com/problems/next-greater-element-ii	50866	99485	684	44
504	七进制数	简单	0.45	0.51	https://leetcode.com/problems/base-7	41667	92704	150	116
505	迷宫 II	中等	0.43	1.55	https://leetcode.com/problems/the-maze-ii	5
506	相对名次	简单	0.48	0.5	https://leetcode.com/problems/relative-ranks	42842	88589	190	374
507	完美数	简单	0.34	0.34	https://leetcode.com/problems/perfect-number	41218	120019	156	439
508	出现次数最多的子树元素和	中等	0.54	0.44	https://leetcode.com/problems/most-frequent-subtree-sum	49126	89956	390	74
509	斐波那契数	简单	0.66	1.03	https://leetcode.com/problems/fibonacci-number	59754	89521	178	140
510	二叉搜索树中的中序后继 II	中等	0.52	0	https://leetcode.com/problems/inorder-successor-in-bst-ii	2
513	找树左下角的值	中等	0.58	0.31	https://leetcode.com/problems/find-bottom-left-tree-value	72073	123267	571	94
514	自由之路	难	0.4	0.97	https://leetcode.com/problems/freedom-trail	13298	32755	277	18
515	在每个树行中找最大值	中等	0.57	0.29	https://leetcode.com/problems/find-largest-value-in-each-tree-row	64395	111341	492	44
516	最长回文子序列	中等	0.46	0.99	https://leetcode.com/problems/longest-palindromic-subsequence	60870	130069	886	127
517	超级洗衣机	难	0.37	0	https://leetcode.com/problems/super-washing-machines	12500	33824	195	109
518	零钱兑换 II	中等	0.42	0.89	https://leetcode.com/problems/coin-change-2	45251	105716	750	37
519	随机翻转矩阵	中等	0.33	1.25	https://leetcode.com/problems/random-flip-matrix	3860	11652	94	36
520	检测大写字母	简单	0.52	0.26	https://leetcode.com/problems/detect-capital	85124	162225	311	198
521	最长特殊序列 Ⅰ	简单	0.56	0.37	https://leetcode.com/problems/longest-uncommon-subsequence-i	46894	83124	205	3340
522	最长特殊序列 II	中等	0.32	0	https://leetcode.com/problems/longest-uncommon-subsequence-ii	16746	50927	103	474
523	连续的子数组和	中等	0.24	0.79	https://leetcode.com/problems/continuous-subarray-sum	66430	274813	685	873
524	通过删除字母匹配到字典里最长单词	中等	0.45	0.63	https://leetcode.com/problems/longest-word-in-dictionary-through-deleting	43624	95194	319	174
525	连续数组	中等	0.42	1.39	https://leetcode.com/problems/contiguous-array	39329	91980	680	35
526	优美的排列	中等	0.54	0.51	https://leetcode.com/problems/beautiful-arrangement	37472	68556	438	114
527	单词缩写	难	0.5	1.81	https://leetcode.com/problems/word-abbreviation	2
528	按权重随机选择	中等	0.42	1.42	https://leetcode.com/problems/random-pick-with-weight	27192	63546	256	462
529	扫雷游戏	中等	0.52	0	https://leetcode.com/problems/minesweeper	33197	62743	305	316
530	二叉搜索树的最小绝对差	简单	0.5	0.48	https://leetcode.com/problems/minimum-absolute-difference-in-bst	59870	118381	527	35
531	孤独像素 I	中等	0.57	0	https://leetcode.com/problems/lonely-pixel-i	1
532	数组中的K-diff数对	简单	0.29	0.38	https://leetcode.com/problems/k-diff-pairs-in-an-array	65047	217704	359	802
533	孤独像素 II	中等	0.46	0	https://leetcode.com/problems/lonely-pixel-ii	1
535	TinyURL 的加密与解密	中等	0.76	1.51	https://leetcode.com/problems/encode-and-decode-tinyurl	75312	98032	452	962
536	从字符串生成二叉树	中等	0.45	0	https://leetcode.com/problems/construct-binary-tree-from-string	3
537	复数乘法	中等	0.65	0	https://leetcode.com/problems/complex-number-multiplication	36564	55764	161	559
538	把二叉搜索树转换为累加树	简单	0.51	0.25	https://leetcode.com/problems/convert-bst-to-greater-tree	79488	155735	1271	84
539	最小时间差	中等	0.48	0.81	https://leetcode.com/problems/minimum-time-difference	28648	59727	239	85
540	有序数组中的单一元素	中等	0.57	0.49	https://leetcode.com/problems/single-element-in-a-sorted-array	54970	95641	737	59
541	反转字符串 II	简单	0.45	0.91	https://leetcode.com/problems/reverse-string-ii	60232	132181	247	748
542	01 矩阵	中等	0.35	0.88	https://leetcode.com/problems/01-matrix	43924	122812	669	78
543	二叉树的直径	简单	0.46	0.83	https://leetcode.com/problems/diameter-of-binary-tree	132986	284146	1412	85
544	输出比赛匹配对	中等	0.73	0	https://leetcode.com/problems/output-contest-matches	3
545	二叉树的边界	中等	0.35	0	https://leetcode.com/problems/boundary-of-binary-tree
546	移除盒子	难	0.38	1.1	https://leetcode.com/problems/remove-boxes	9437	24645	369	35
547	朋友圈	中等	0.53	0.9	https://leetcode.com/problems/friend-circles	87156	162189	1030	82
548	将数组分割成和相等的子数组	中等	0.43	1.69	https://leetcode.com/problems/split-array-with-equal-sum	1
549	二叉树中最长的连续序列	中等	0.44	0	https://leetcode.com/problems/binary-tree-longest-consecutive-sequence-ii	3
551	学生出勤记录 I	简单	0.45	0.17	https://leetcode.com/problems/student-attendance-record-i	51918	114635	148	595
552	学生出勤记录 II	难	0.33	1.6	https://leetcode.com/problems/student-attendance-record-ii	12639	38136	282	57
553	最优除法	中等	0.55	0	https://leetcode.com/problems/optimal-division	20501	36986	123	938
554	砖墙	中等	0.47	0.59	https://leetcode.com/problems/brick-wall	37968	79613	571	28
555	分割连接字符串	中等	0.39	0	https://leetcode.com/problems/split-concatenated-strings	1
556	下一个更大元素 III	中等	0.3	1.59	https://leetcode.com/problems/next-greater-element-iii	26079	86914	354	116
557	反转字符串中的单词 III	简单	0.64	0.96	https://leetcode.com/problems/reverse-words-in-a-string-iii	127129	197964	624	66
558	四叉树交集	简单	0.41	1.55	https://leetcode.com/problems/quad-tree-intersection	4590	11138	43	203
559	N叉树的最大深度	简单	0.65	0.57	https://leetcode.com/problems/maximum-depth-of-n-ary-tree	48047	73380	352	20
560	和为K的子数组	中等	0.42	0.94	https://leetcode.com/problems/subarray-sum-equals-k	105939	250902	1984	52
561	数组拆分 I	简单	0.69	0.33	https://leetcode.com/problems/array-partition-i	145793	210945	568	1708
562	矩阵中最长的连续1线段	中等	0.43	0	https://leetcode.com/problems/longest-line-of-consecutive-one-in-matrix	2
563	二叉树的坡度	简单	0.47	0	https://leetcode.com/problems/binary-tree-tilt	52098	110813	328	739
564	寻找最近的回文数	难	0.18	1.8	https://leetcode.com/problems/find-the-closest-palindrome	13843	73789	145	584
565	数组嵌套	中等	0.52	0	https://leetcode.com/problems/array-nesting	35461	67386	553	78
566	重塑矩阵	简单	0.58	0.15	https://leetcode.com/problems/reshape-the-matrix	78012	132364	563	85
567	字符串的排列	中等	0.38	0.41	https://leetcode.com/problems/permutation-in-string	47625	123886	634	34
568	最大休假天数	难	0.38	0	https://leetcode.com/problems/maximum-vacation-days
569	员工薪水中位数	难	0.47	0	https://leetcode.com/problems/median-employee-salary	0
570	至少有5名直接下属的经理	中等	0.62	0	https://leetcode.com/problems/managers-with-at-least-5-direct-reports	0
571	给定数字的频率查询中位数	难	0.47	0	https://leetcode.com/problems/find-median-given-frequency-of-numbers	0
572	另一个树的子树	简单	0.41	0.45	https://leetcode.com/problems/subtree-of-another-tree	101894	244076	1195	44
573	松鼠模拟	中等	0.53	0	https://leetcode.com/problems/squirrel-simulation	2
574	当选者	中等	0.36	0	https://leetcode.com/problems/winning-candidate
575	分糖果	简单	0.59	0	https://leetcode.com/problems/distribute-candies	72505	121473	292	665
576	出界的路径数	中等	0.32	0	https://leetcode.com/problems/out-of-boundary-paths	17560	54668	293	108
577	员工奖金	简单	0.59	0	https://leetcode.com/problems/employee-bonus
578	查询回答率最高的问题	中等	0.35	0	https://leetcode.com/problems/get-highest-answer-rate-question	0
579	查询员工的累计薪水	难	0.34	1.21	https://leetcode.com/problems/find-cumulative-salary-of-an-employee	0
580	统计各专业学生人数	中等	0.42	0	https://leetcode.com/problems/count-student-number-in-departments
581	最短无序连续子数组	简单	0.3	0.43	https://leetcode.com/problems/shortest-unsorted-continuous-subarray	67983	226133	1431	70
582	杀死进程	中等	0.56	0	https://leetcode.com/problems/kill-process	5
583	两个字符串的删除操作	中等	0.45	1.14	https://leetcode.com/problems/delete-operation-for-two-strings	31251	69472	691	18
584	寻找用户推荐人	简单	0.67	0	https://leetcode.com/problems/find-customer-referee	0
585	2016年的投资	中等	0.47	0	https://leetcode.com/problems/investments-in-2016	5
586	订单最多的客户	简单	0.66	0	https://leetcode.com/problems/customer-placing-the-largest-number-of-orders	2
587	安装栅栏	难	0.34	0	https://leetcode.com/problems/erect-the-fence	6929	20188	135	146
588	设计内存文件系统	难	0.39	0	https://leetcode.com/problems/design-in-memory-file-system	2
589	N叉树的前序遍历	简单	0.67	0.78	https://leetcode.com/problems/n-ary-tree-preorder-traversal	43620	64545	224	35
590	N叉树的后序遍历	简单	0.67	0.24	https://leetcode.com/problems/n-ary-tree-postorder-traversal	39770	58829	284	37
591	标签验证器	难	0.32	0	https://leetcode.com/problems/tag-validator	5219	15913	57	287
592	分数加减运算	中等	0.47	0	https://leetcode.com/problems/fraction-addition-and-subtraction	13066	27758	117	232
593	有效的正方形	中等	0.4	0.57	https://leetcode.com/problems/valid-square	19598	48318	134	265
594	最长和谐子序列	简单	0.43	0.6	https://leetcode.com/problems/longest-harmonious-subsequence	36704	83749	413	56
595	大的国家	简单	0.73	0.59	https://leetcode.com/problems/big-countries	111801	151423	366	519
596	超过5名学生的课	简单	0.35	0.78	https://leetcode.com/problems/classes-more-than-5-students	45421	127305	150	423
597	好友申请 I ：总体通过率	简单	0.39	0	https://leetcode.com/problems/friend-requests-i-overall-acceptance-rate	3
598	范围求和 II	简单	0.48	0	https://leetcode.com/problems/range-addition-ii	31143	63916	189	467
599	两个列表的最小索引总和	简单	0.48	0	https://leetcode.com/problems/minimum-index-sum-of-two-lists	57455	119699	359	144
600	不含连续1的非负整数	难	0.32	1.38	https://leetcode.com/problems/non-negative-integers-without-consecutive-ones	8668	26472	228	63
601	体育馆的人流量	难	0.36	1.61	https://leetcode.com/problems/human-traffic-of-stadium	14370	39270	87	185
602	好友申请 II ：谁有最多的好友	中等	0.45	0	https://leetcode.com/problems/friend-requests-ii-who-has-the-most-friends	0
603	连续空余座位	简单	0.58	0	https://leetcode.com/problems/consecutive-available-seats	2
604	迭代压缩字符串	简单	0.34	0	https://leetcode.com/problems/design-compressed-string-iterator	2
605	种花问题	简单	0.3	0.71	https://leetcode.com/problems/can-place-flowers	61675	199422	464	265
606	根据二叉树创建字符串	简单	0.51	0.76	https://leetcode.com/problems/construct-string-from-binary-tree	59128	114605	528	731
607	销售员	简单	0.57	0	https://leetcode.com/problems/sales-person	0
608	树节点	中等	0.58	0	https://leetcode.com/problems/tree-node	2
609	在系统中查找重复文件	中等	0.55	0	https://leetcode.com/problems/find-duplicate-file-in-system	27365	49570	228	387
610	判断三角形	简单	0.61	0	https://leetcode.com/problems/triangle-judgement	0
611	有效三角形的个数	中等	0.45	0.76	https://leetcode.com/problems/valid-triangle-number	37483	82842	573	71
612	平面上的最近距离	中等	0.53	0	https://leetcode.com/problems/shortest-distance-in-a-plane
613	直线上的最近距离	简单	0.73	0	https://leetcode.com/problems/shortest-distance-in-a-line	1
614	二级关注者	中等	0.22	0	https://leetcode.com/problems/second-degree-follower
615	平均工资：部门与公司比较	难	0.37	0	https://leetcode.com/problems/average-salary-departments-vs-company
616	给字符串添加加粗标签	中等	0.39	0	https://leetcode.com/problems/add-bold-tag-in-string	6
617	合并二叉树	简单	0.7	0.33	https://leetcode.com/problems/merge-two-binary-trees	178367	253955	1823	129
618	学生地理信息报告	难	0.42	0	https://leetcode.com/problems/students-report-by-geography	0
619	只出现一次的最大数字	简单	0.38	0	https://leetcode.com/problems/biggest-single-number
620	有趣的电影	简单	0.62	0.28	https://leetcode.com/problems/not-boring-movies	63932	102579	179	210
621	任务调度器	中等	0.45	0.96	https://leetcode.com/problems/task-scheduler	87310	191885	1642	278
622	设计循环队列	中等	0.39	0.58	https://leetcode.com/problems/design-circular-queue	26283	66843	236	47
623	在二叉树中增加一行	中等	0.47	0	https://leetcode.com/problems/add-one-row-to-tree	26430	55853	280	102
624	数组列表中的最大距离	简单	0.37	0	https://leetcode.com/problems/maximum-distance-in-arrays
625	最小因式分解	中等	0.31	0	https://leetcode.com/problems/minimum-factorization	3
626	换座位	中等	0.54	1.14	https://leetcode.com/problems/exchange-seats	24899	45569	172	171
627	交换工资	简单	0.68	0.61	https://leetcode.com/problems/swap-salary	66574	96678	306	229
628	三个数的最大乘积	简单	0.46	0.88	https://leetcode.com/problems/maximum-product-of-three-numbers	70863	153933	673	258
629	K个逆序对数组	难	0.29	1.48	https://leetcode.com/problems/k-inverse-pairs-array	7853	26812	207	70
630	课程表 III	难	0.31	0.84	https://leetcode.com/problems/course-schedule-iii	11614	36716	395	25
631	设计 Excel 求和公式	难	0.29	0	https://leetcode.com/problems/design-excel-sum-formula	2
632	最小区间	难	0.47	1.02	https://leetcode.com/problems/smallest-range	23239	48943	672	20
633	平方数之和	简单	0.32	0.45	https://leetcode.com/problems/sum-of-square-numbers	44509	136075	337	225
634	寻找数组的错位排列	中等	0.37	0	https://leetcode.com/problems/find-the-derangement-of-an-array	2
635	设计日志存储系统	中等	0.54	0	https://leetcode.com/problems/design-log-storage-system	5
636	函数的独占时间	中等	0.48	0	https://leetcode.com/problems/exclusive-time-of-functions	40311	82831	433	719
637	二叉树的层平均值	简单	0.58	0.73	https://leetcode.com/problems/average-of-levels-in-binary-tree	79533	135254	805	128
638	大礼包	中等	0.48	0	https://leetcode.com/problems/shopping-offers	21297	43706	366	332
639	解码方法 2	难	0.25	0	https://leetcode.com/problems/decode-ways-ii	21684	86219	267	363
640	求解方程	中等	0.4	0	https://leetcode.com/problems/solve-the-equation
641	设计循环双端队列	中等	0.49	0	https://leetcode.com/problems/design-circular-deque	6816	13798	103	29
642	设计搜索自动补全系统	难	0.37	0	https://leetcode.com/problems/design-search-autocomplete-system	3
643	子数组最大平均数 I	简单	0.39	0.69	https://leetcode.com/problems/maximum-average-subarray-i	52014	131432	460	84
644	最大平均子段和 II	难	0.28	0	https://leetcode.com/problems/maximum-average-subarray-ii	4
645	错误的集合	简单	0.4	0	https://leetcode.com/problems/set-mismatch	47931	117644	416	231
646	最长数对链	中等	0.48	0.35	https://leetcode.com/problems/maximum-length-of-pair-chain	36470	74717	565	52
647	回文子串	中等	0.57	0.58	https://leetcode.com/problems/palindromic-substrings	99901	175168	1369	73
648	单词替换	中等	0.52	1.34	https://leetcode.com/problems/replace-words	34509	66357	442	109
649	Dota2 参议院	中等	0.37	0.65	https://leetcode.com/problems/dota2-senate	8621	22890	199	155
650	只有两个键的键盘	中等	0.46	0.53	https://leetcode.com/problems/2-keys-keyboard	34244	73464	669	42
651	4键键盘	中等	0.5	0	https://leetcode.com/problems/4-keys-keyboard
652	寻找重复的子树	中等	0.45	0.75	https://leetcode.com/problems/find-duplicate-subtrees	37872	83063	759	156
653	两数之和 IV - 输入 BST	简单	0.52	0.36	https://leetcode.com/problems/two-sum-iv-input-is-a-bst	88495	168532	870	102
654	最大二叉树	中等	0.76	0.86	https://leetcode.com/problems/maximum-binary-tree	84590	111059	1098	130
655	输出二叉树	中等	0.51	1.26	https://leetcode.com/problems/print-binary-tree	20971	40418	218	550
656	金币路径	难	0.26	0	https://leetcode.com/problems/coin-path	2
657	机器人能否返回原点	简单	0.71	0.32	https://leetcode.com/problems/robot-return-to-origin	162655	227265	708	561
658	找到 K 个最接近的元素	中等	0.38	0.79	https://leetcode.com/problems/find-k-closest-elements	55655	146286	680	147
659	分割数组为连续子序列	中等	0.4	0	https://leetcode.com/problems/split-array-into-consecutive-subsequences	20550	50505	517	220
660	移除 9	难	0.51	0	https://leetcode.com/problems/remove-9	1
661	图片平滑器	简单	0.48	0.56	https://leetcode.com/problems/image-smoother	35527	72732	181	804
662	二叉树最大宽度	中等	0.39	0.62	https://leetcode.com/problems/maximum-width-of-binary-tree	33359	84099	633	111
663	均匀树划分	中等	0.38	0	https://leetcode.com/problems/equal-tree-partition
664	奇怪的打印机	难	0.36	0	https://leetcode.com/problems/strange-printer	9028	24572	257	33
665	非递减数列	简单	0.19	0.93	https://leetcode.com/problems/non-decreasing-array	53035	272264	1058	218
666	路径和 IV	中等	0.52	0	https://leetcode.com/problems/path-sum-iv	3
667	优美的排列 II	中等	0.52	0	https://leetcode.com/problems/beautiful-arrangement-ii	18166	34946	219	524
668	乘法表中第k小的数	难	0.42	0.9	https://leetcode.com/problems/kth-smallest-number-in-multiplication-table	12299	29311	319	19
669	修剪二叉搜索树	简单	0.6	0.17	https://leetcode.com/problems/trim-a-binary-search-tree	66467	110155	1127	131
670	最大交换	中等	0.39	0.43	https://leetcode.com/problems/maximum-swap	36463	91904	548	43
671	二叉树中第二小的节点	简单	0.43	0.41	https://leetcode.com/problems/second-minimum-node-in-a-binary-tree	49056	112842	376	560
672	灯泡开关 Ⅱ	中等	0.5	0.87	https://leetcode.com/problems/bulb-switcher-ii	9511	18998	91	684
673	最长递增子序列的个数	中等	0.33	1.35	https://leetcode.com/problems/number-of-longest-increasing-subsequence	30707	91399	790	57
674	最长连续递增序列	简单	0.44	0.66	https://leetcode.com/problems/longest-continuous-increasing-subsequence	67448	152116	436	93
675	为高尔夫比赛砍树	难	0.3	1.33	https://leetcode.com/problems/cut-off-trees-for-golf-event	15718	51134	273	153
676	实现一个魔法字典	中等	0.51	0.77	https://leetcode.com/problems/implement-magic-dictionary	25542	49436	365	98
677	键值映射	中等	0.51	0	https://leetcode.com/problems/map-sum-pairs	26325	51025	300	58
678	有效的括号字符串	中等	0.32	0.84	https://leetcode.com/problems/valid-parenthesis-string	28671	87574	665	24
679	24 点游戏	难	0.42	2.36	https://leetcode.com/problems/24-game	20765	48412	382	86
680	验证回文字符串 Ⅱ	简单	0.34	0.63	https://leetcode.com/problems/valid-palindrome-ii	74648	217812	733	46
681	最近时刻	中等	0.42	0	https://leetcode.com/problems/next-closest-time	6
682	棒球比赛	简单	0.61	0.7	https://leetcode.com/problems/baseball-game	54184	88738	313	777
683	K 个空花盆	难	0.34	0	https://leetcode.com/problems/k-empty-slots	6
684	冗余连接	中等	0.51	0	https://leetcode.com/problems/redundant-connection	51011	98249	650	191
685	冗余连接 II	难	0.3	0	https://leetcode.com/problems/redundant-connection-ii	22741	73973	450	154
686	重复叠加字符串匹配	简单	0.31	0.67	https://leetcode.com/problems/repeated-string-match	68170	216920	498	482
687	最长同值路径	简单	0.33	0.43	https://leetcode.com/problems/longest-univalue-path	59472	176012	982	229
688	“马”在棋盘上的概率	中等	0.44	0.63	https://leetcode.com/problems/knight-probability-in-chessboard	20726	46543	362	79
689	三个无重叠子数组的最大和	难	0.44	1.13	https://leetcode.com/problems/maximum-sum-of-3-non-overlapping-subarrays	25805	58413	582	33
690	员工的重要性	简单	0.54	0	https://leetcode.com/problems/employee-importance	46372	85571	401	397
691	贴纸拼词	难	0.38	0	https://leetcode.com/problems/stickers-to-spell-word	8372	21868	245	25
692	前K个高频单词	中等	0.45	1.27	https://leetcode.com/problems/top-k-frequent-words	64903	141742	738	67
693	交替位二进制数	简单	0.57	0	https://leetcode.com/problems/binary-number-with-alternating-bits	41722	72000	298	69
694	不同岛屿的数量	中等	0.51	1.65	https://leetcode.com/problems/number-of-distinct-islands
695	岛屿的最大面积	中等	0.57	0.84	https://leetcode.com/problems/max-area-of-island	83687	145916	1103	62
696	计数二进制子串	简单	0.53	0.76	https://leetcode.com/problems/count-binary-substrings	31074	58121	628	112
697	数组的度	简单	0.5	0.9	https://leetcode.com/problems/degree-of-an-array	49990	99007	505	441
698	划分为k个相等的子集	中等	0.42	1.47	https://leetcode.com/problems/partition-to-k-equal-sum-subsets	43009	101366	823	50
699	掉落的方块	难	0.4	0	https://leetcode.com/problems/falling-squares	8979	22419	166	26
700	二叉搜索树中的搜索	简单	0.68	0.09	https://leetcode.com/problems/search-in-a-binary-search-tree	60535	88712	316	92
701	二叉搜索树中的插入操作	中等	0.75	0.21	https://leetcode.com/problems/insert-into-a-binary-search-tree	45404	59826	336	39
702	搜索长度未知的有序数组	中等	0.58	0	https://leetcode.com/problems/search-in-a-sorted-array-of-unknown-size	1
703	数据流中的第K大元素	简单	0.46	1.22	https://leetcode.com/problems/kth-largest-element-in-a-stream	33535	72275	305	139
704	二分查找	简单	0.47	1.07	https://leetcode.com/problems/binary-search	51579	108007	252	31
705	设计哈希集合	简单	0.53	0.53	https://leetcode.com/problems/design-hashset	21247	39489	132	36
706	设计哈希映射	简单	0.56	0.44	https://leetcode.com/problems/design-hashmap	33806	60286	308	52
707	设计链表	简单	0.22	0.6	https://leetcode.com/problems/design-linked-list	26958	122878	309	247
708	循环有序列表的插入	中等	0.29	0	https://leetcode.com/problems/insert-into-a-cyclic-sorted-list	1
709	转换成小写字母	简单	0.76	0.87	https://leetcode.com/problems/to-lower-case	109345	142184	274	945
710	黑名单中的随机数	难	0.31	1.12	https://leetcode.com/problems/random-pick-with-blacklist	6107	19580	152	36
711	不同岛屿的数量 II	难	0.46	0	https://leetcode.com/problems/number-of-distinct-islands-ii	3
712	两个字符串的最小ASCII删除和	中等	0.54	0.75	https://leetcode.com/problems/minimum-ascii-delete-sum-for-two-strings	20857	38184	555	37
713	乘积小于K的子数组	中等	0.36	1.11	https://leetcode.com/problems/subarray-product-less-than-k	29854	81373	620	30
714	买卖股票的最佳时机含手续费	中等	0.5	0.85	https://leetcode.com/problems/best-time-to-buy-and-sell-stock-with-transaction-fee	39766	78655	913	31
715	Range 模块	难	0.35	2.19	https://leetcode.com/problems/range-module	11597	32617	285	24
716	最大栈	简单	0.4	0	https://leetcode.com/problems/max-stack	5
717	1比特与2比特字符	简单	0.49	1.11	https://leetcode.com/problems/1-bit-and-2-bit-characters	41238	83762	258	661
718	最长重复子数组	中等	0.46	1.2	https://leetcode.com/problems/maximum-length-of-repeated-subarray	34000	73825	633	29
719	找出第 k 小的距离对	难	0.29	0	https://leetcode.com/problems/find-k-th-smallest-pair-distance	19832	67994	544	20
720	词典中最长的单词	简单	0.44	0.3	https://leetcode.com/problems/longest-word-in-dictionary	35731	79880	343	430
721	账户合并	中等	0.4	0	https://leetcode.com/problems/accounts-merge	33589	82894	628	172
722	删除注释	中等	0.31	1.44	https://leetcode.com/problems/remove-comments	15469	49483	165	541
723	粉碎糖果	中等	0.63	0	https://leetcode.com/problems/candy-crush	3
724	寻找数组的中心索引	简单	0.41	0.14	https://leetcode.com/problems/find-pivot-index	70583	171353	616	151
725	分隔链表	中等	0.48	0.48	https://leetcode.com/problems/split-linked-list-in-parts	27734	56651	352	81
726	原子的数量	难	0.44	1.94	https://leetcode.com/problems/number-of-atoms	10841	24263	208	85
727	最小窗口子序列	难	0.37	0	https://leetcode.com/problems/minimum-window-subsequence	2
728	自除数	简单	0.7	0.24	https://leetcode.com/problems/self-dividing-numbers	79072	112607	425	228
729	我的日程安排表 I	中等	0.47	0.67	https://leetcode.com/problems/my-calendar-i	32356	68269	354	27
730	统计不同回文子字符串	难	0.38	0	https://leetcode.com/problems/count-different-palindromic-subsequences	8632	22174	295	31
731	我的日程安排表 II	中等	0.44	0	https://leetcode.com/problems/my-calendar-ii	23326	52406	349	57
732	我的日程安排表 III	难	0.54	1.39	https://leetcode.com/problems/my-calendar-iii	12684	23090	222	85
733	图像渲染	简单	0.5	0.78	https://leetcode.com/problems/flood-fill	48485	95190	434	98
734	句子相似性	简单	0.4	0	https://leetcode.com/problems/sentence-similarity	3
735	行星碰撞	中等	0.38	0	https://leetcode.com/problems/asteroid-collision	25260	65603	436	57
736	Lisp 语法解析	难	0.44	0	https://leetcode.com/problems/parse-lisp-expression	6508	14674	144	127
737	句子相似性 II	中等	0.43	0	https://leetcode.com/problems/sentence-similarity-ii
738	单调递增的数字	中等	0.41	0.92	https://leetcode.com/problems/monotone-increasing-digits	13676	32703	237	42
739	每日温度	中等	0.6	0.6	https://leetcode.com/problems/daily-temperatures	67957	113206	1276	33
740	删除与获得点数	中等	0.45	0.51	https://leetcode.com/problems/delete-and-earn	21864	47596	601	52
741	摘樱桃	难	0.29	1.52	https://leetcode.com/problems/cherry-pickup	9583	32143	406	32
742	二叉树最近的叶节点	中等	0.39	0	https://leetcode.com/problems/closest-leaf-in-a-binary-tree	3
743	网络延迟时间	中等	0.42	1.41	https://leetcode.com/problems/network-delay-time	34267	81411	610	168
744	寻找比目标字母大的最小字母	简单	0.44	0	https://leetcode.com/problems/find-smallest-letter-greater-than-target	41481	94117	222	344
745	前缀和后缀搜索	难	0.3	0	https://leetcode.com/problems/prefix-and-suffix-search	12395	40407	196	151
746	使用最小花费爬楼梯	简单	0.47	0.87	https://leetcode.com/problems/min-cost-climbing-stairs	81911	173290	1074	240
747	至少是其他数字两倍的最大数	简单	0.4	0.08	https://leetcode.com/problems/largest-number-at-least-twice-of-others	51569	127133	201	410
748	最短完整词	简单	0.54	0.65	https://leetcode.com/problems/shortest-completing-word	20485	37717	116	432
749	隔离病毒	难	0.41	0	https://leetcode.com/problems/contain-virus	2919	7085	47	155
750	角矩形的数量	中等	0.64	0	https://leetcode.com/problems/number-of-corner-rectangles	2
751	IP 到 CIDR	简单	0.59	0	https://leetcode.com/problems/ip-to-cidr	0
752	打开转盘锁	中等	0.46	0.26	https://leetcode.com/problems/open-the-lock	22116	47947	378	23
753	破解保险箱	难	0.46	0	https://leetcode.com/problems/cracking-the-safe	15071	32493	267	296
754	到达终点数字	简单	0.32	0.82	https://leetcode.com/problems/reach-a-number	10476	32091	275	226
755	倒水	中等	0.4	0	https://leetcode.com/problems/pour-water	3
756	金字塔转换矩阵	中等	0.51	0	https://leetcode.com/problems/pyramid-transition-matrix	13361	25904	176	266
757	设置交集大小至少为2	难	0.37	0	https://leetcode.com/problems/set-intersection-size-at-least-two	4569	12346	163	14
758	字符串中的加粗单词	简单	0.42	0	https://leetcode.com/problems/bold-words-in-string	1
759	员工空闲时间	难	0.61	0	https://leetcode.com/problems/employee-free-time	2
760	找出变位映射	简单	0.79	0	https://leetcode.com/problems/find-anagram-mappings	7
761	特殊的二进制序列	难	0.51	2.28	https://leetcode.com/problems/special-binary-string	4762	9256	168	67
762	二进制表示中质数个计算置位	简单	0.59	0.25	https://leetcode.com/problems/prime-number-of-set-bits-in-binary-representation	29010	48911	158	237
763	划分字母区间	中等	0.7	0.26	https://leetcode.com/problems/partition-labels	49096	69678	945	52
764	最大加号标志	中等	0.43	0	https://leetcode.com/problems/largest-plus-sign	13274	30641	266	63
765	情侣牵手	难	0.51	1.08	https://leetcode.com/problems/couples-holding-hands	14621	28373	352	46
766	托普利茨矩阵	简单	0.61	0	https://leetcode.com/problems/toeplitz-matrix	61030	98797	610	67
767	重构字符串	中等	0.42	0.82	https://leetcode.com/problems/reorganize-string	27190	64143	543	27
768	最多能完成排序的块 II	难	0.45	0	https://leetcode.com/problems/max-chunks-to-make-sorted-ii	12086	26321	242	8
769	最多能完成排序的块	中等	0.51	0	https://leetcode.com/problems/max-chunks-to-make-sorted
770	基本计算器 IV	难	0.45	0	https://leetcode.com/problems/basic-calculator-iv	2234	4916	39	320
771	宝石与石头	简单	0.83	0.95	https://leetcode.com/problems/jewels-and-stones	259394	312016	1438	264
772	基本计算器 III	难	0.44	0	https://leetcode.com/problems/basic-calculator-iii	2
773	滑动谜题	难	0.52	1.18	https://leetcode.com/problems/sliding-puzzle	15976	30438	314	11
774	最小化去加油站的最大距离	难	0.41	0	https://leetcode.com/problems/minimize-max-distance-to-gas-station	2
775	全局倒置与局部倒置	中等	0.38	0.75	https://leetcode.com/problems/global-and-local-inversions	12714	32654	203	116
776	拆分二叉搜索树	中等	0.52	0	https://leetcode.com/problems/split-bst
777	在LR字符串中交换相邻字符	中等	0.33	0	https://leetcode.com/problems/swap-adjacent-in-lr-string	14896	44658	215	203
778	水位上升的泳池中游泳	难	0.47	0	https://leetcode.com/problems/swim-in-rising-water	12202	25568	306	30
779	第K个语法符号	中等	0.37	0	https://leetcode.com/problems/k-th-symbol-in-grammar	14336	38245	220	84
780	到达终点	难	0.27	0	https://leetcode.com/problems/reaching-points	8933	32453	236	45
781	森林中的兔子	中等	0.51	0	https://leetcode.com/problems/rabbits-in-forest	13040	25173	153	199
782	变为棋盘	难	0.39	1.47	https://leetcode.com/problems/transform-to-chessboard	3026	7617	83	89
783	二叉搜索树结点最小距离	简单	0.5	0.46	https://leetcode.com/problems/minimum-distance-between-bst-nodes	33385	66047	361	87
784	字母大小写全排列	简单	0.57	0.41	https://leetcode.com/problems/letter-case-permutation	46837	82152	633	77
785	判断二分图	中等	0.43	1	https://leetcode.com/problems/is-graph-bipartite	43942	101322	645	78
786	第 K 个最小的素数分数	难	0.39	0	https://leetcode.com/problems/k-th-smallest-prime-fraction	7944	19942	219	9
787	K 站中转内最便宜的航班	中等	0.34	0.87	https://leetcode.com/problems/cheapest-flights-within-k-stops	40986	117343	759	30
788	旋转数字	简单	0.54	0	https://leetcode.com/problems/rotated-digits	27740	51151	200	688
789	逃脱阻碍者	中等	0.55	0	https://leetcode.com/problems/escape-the-ghosts	10148	18337	124	257
790	多米诺和托米诺平铺	中等	0.35	0	https://leetcode.com/problems/domino-and-tromino-tiling	8219	22925	244	124
791	自定义字符串排序	中等	0.62	0	https://leetcode.com/problems/custom-sort-string	34437	55439	385	128
792	匹配子序列的单词数	中等	0.43	1.22	https://leetcode.com/problems/number-of-matching-subsequences	20635	47867	471	37
793	阶乘函数后K个零	难	0.39	1.71	https://leetcode.com/problems/preimage-size-of-factorial-zeroes-function	5540	14211	100	44
794	有效的井字游戏	中等	0.29	0.91	https://leetcode.com/problems/valid-tic-tac-toe-state	11267	38160	93	312
795	区间子数组个数	中等	0.43	1.08	https://leetcode.com/problems/number-of-subarrays-with-bounded-maximum
796	旋转字符串	简单	0.49	0.76	https://leetcode.com/problems/rotate-string	40465	82477	397	37
797	所有可能的路径	中等	0.7	1.57	https://leetcode.com/problems/all-paths-from-source-to-target	28238	40027	400	35
798	得分最高的最小轮调	难	0.4	2.28	https://leetcode.com/problems/smallest-rotation-with-highest-score	4322	10729	164	12
799	香槟塔	中等	0.34	1.86	https://leetcode.com/problems/champagne-tower	19
800	相似 RGB 颜色	简单	0.59	0	https://leetcode.com/problems/similar-rgb-color
801	使序列递增的最小交换次数	中等	0.34	0	https://leetcode.com/problems/minimum-swaps-to-make-sequences-increasing	13826	39849	497	28
802	找到最终的安全状态	中等	0.43	0	https://leetcode.com/problems/find-eventual-safe-states	17421	39846	354	51
803	打砖块	难	0.28	1.73	https://leetcode.com/problems/bricks-falling-when-hit	10428	36365	296	90
804	唯一摩尔斯密码词	简单	0.74	0.39	https://leetcode.com/problems/unique-morse-code-words	88239	118038	426	352
805	数组的均值分割	难	0.24	2.04	https://leetcode.com/problems/split-array-with-same-average	9079	37302	221	44
806	写字符串需要的行数	简单	0.63	0	https://leetcode.com/problems/number-of-lines-to-write-string	27963	44284	152	609
807	保持城市天际线	中等	0.81	1.13	https://leetcode.com/problems/max-increase-to-keep-city-skyline	47156	57875	520	127
808	分汤	中等	0.37	0	https://leetcode.com/problems/soup-servings	6150	16420	96	340
809	情感丰富的文字	中等	0.43	0	https://leetcode.com/problems/expressive-words	13178	30262	105	328
810	黑板异或游戏	难	0.44	0	https://leetcode.com/problems/chalkboard-xor-game	2665	5932	42	139
811	子域名访问计数	简单	0.65	0	https://leetcode.com/problems/subdomain-visit-count	43416	66376	255	401
812	最大三角形面积	简单	0.56	0.66	https://leetcode.com/problems/largest-triangle-area	14624	26060	106	702
813	最大平均值和的分组	中等	0.45	0	https://leetcode.com/problems/largest-sum-of-averages	13245	29294	532	19
814	二叉树剪枝	中等	0.71	0.58	https://leetcode.com/problems/binary-tree-pruning	34219	48159	540	15
815	公交路线	难	0.4	2.06	https://leetcode.com/problems/bus-routes	21192	52858	410	18
816	模糊坐标	中等	0.44	0	https://leetcode.com/problems/ambiguous-coordinates
817	链表组件	中等	0.54	0.37	https://leetcode.com/problems/linked-list-components	24910	45589	213	531
818	赛车	难	0.35	1.21	https://leetcode.com/problems/race-car	9891	28250	265	31
819	最常见的单词	简单	0.42	0.3	https://leetcode.com/problems/most-common-word	55292	131028	306	690
820	单词的压缩编码	中等	0.47	0	https://leetcode.com/problems/short-encoding-of-words	8428	17837	150	42
821	字符的最短距离	简单	0.63	1.06	https://leetcode.com/problems/shortest-distance-to-a-character	37506	59115	590	53
822	翻转卡片游戏	中等	0.4	0	https://leetcode.com/problems/card-flipping-game	6046	14988	46	334
823	带因子的二叉树	中等	0.32	0	https://leetcode.com/problems/binary-trees-with-factors	7121	21906	185	26
824	山羊拉丁文	简单	0.57	0.26	https://leetcode.com/problems/goat-latin	32037	55444	147	401
825	适龄的朋友	中等	0.36	0.76	https://leetcode.com/problems/friends-of-appropriate-ages	15428	42501	163	338
826	安排工作以达到最大收益	中等	0.35	0	https://leetcode.com/problems/most-profit-assigning-work	10788	30249	215	35
827	最大人工岛	难	0.43	0	https://leetcode.com/problems/making-a-large-island	9628	22239	261	9
828	独特字符串	难	0.39	1.29	https://leetcode.com/problems/unique-letter-string	5249	13279	208	27
829	连续整数求和	难	0.33	1.07	https://leetcode.com/problems/consecutive-numbers-sum	11627	34911	175	247
830	较大分组的位置	简单	0.47	0	https://leetcode.com/problems/positions-of-large-groups	26795	56012	205	51
831	隐藏个人信息	中等	0.42	0.98	https://leetcode.com/problems/masking-personal-information	6707	15924	48	196
832	翻转图像	简单	0.72	0.61	https://leetcode.com/problems/flipping-an-image	97541	134290	499	103
833	字符串中的查找与替换	中等	0.46	1.34	https://leetcode.com/problems/find-and-replace-in-string	18234	39365	159	221
834	树中距离之和	难	0.39	1.13	https://leetcode.com/problems/sum-of-distances-in-tree	7789	19690	440	22
835	图像重叠	中等	0.52	0	https://leetcode.com/problems/image-overlap	11222	21370	185	267
836	矩形重叠	简单	0.46	0.31	https://leetcode.com/problems/rectangle-overlap	25006	53732	328	73
837	新21点	中等	0.31	1.42	https://leetcode.com/problems/new-21-game	8465	26751	296	166
838	推多米诺	中等	0.43	1.12	https://leetcode.com/problems/push-dominoes	11664	26682	299	34
839	相似字符串组	难	0.34	1.06	https://leetcode.com/problems/similar-string-groups	8429	24416	155	54
840	矩阵中的幻方	简单	0.35	0.4	https://leetcode.com/problems/magic-squares-in-grid	12838	36117	73	659
841	钥匙和房间	中等	0.6	0.51	https://leetcode.com/problems/keys-and-rooms	34425	57085	464	37
842	将数组拆分成斐波那契序列	中等	0.34	0.75	https://leetcode.com/problems/split-array-into-fibonacci-sequence	10431	30068	251	82
843	猜猜这个单词	难	0.43	0	https://leetcode.com/problems/guess-the-word	20490	47035	260	284
844	比较含退格的字符串	简单	0.46	0.13	https://leetcode.com/problems/backspace-string-compare	57700	125414	640	43
845	数组中的最长山脉	中等	0.34	0.81	https://leetcode.com/problems/longest-mountain-in-array	17549	51212	305	13
846	一手顺子	中等	0.49	0.67	https://leetcode.com/problems/hand-of-straights
847	访问所有节点的最短路径	难	0.46	1.19	https://leetcode.com/problems/shortest-path-visiting-all-nodes	8016	17135	292	31
848	字母移位	中等	0.4	0.66	https://leetcode.com/problems/shifting-letters	13099	32116	157	29
849	到最近的人的最大距离	简单	0.4	1.08	https://leetcode.com/problems/maximize-distance-to-closest-person	32558	79555	407	64
850	矩形面积 II	难	0.44	0	https://leetcode.com/problems/rectangle-area-ii	6710	14934	176	22
851	喧闹和富有	中等	0.47	0	https://leetcode.com/problems/loud-and-rich	7709	16191	161	188
852	山脉数组的峰顶索引	简单	0.69	0.33	https://leetcode.com/problems/peak-index-in-a-mountain-array	76594	109968	284	658
853	车队	中等	0.39	1.12	https://leetcode.com/problems/car-fleet	15228	38342	237	140
854	相似度为 K 的字符串	难	0.33	0	https://leetcode.com/problems/k-similar-strings	7442	22261	160	17
855	考场就座	中等	0.38	0	https://leetcode.com/problems/exam-room	15029	39244	305	155
856	括号的分数	中等	0.56	0.41	https://leetcode.com/problems/score-of-parentheses	18480	32845	553	23
857	雇佣 K 名工人的最低成本	难	0.47	0	https://leetcode.com/problems/minimum-cost-to-hire-k-workers	17423	36783	531	55
858	镜面反射	中等	0.52	0	https://leetcode.com/problems/mirror-reflection	6593	12682	131	219
859	亲密字符串	简单	0.27	0.36	https://leetcode.com/problems/buddy-strings	24741	89534	291	173
860	柠檬水找零	简单	0.5	0.42	https://leetcode.com/problems/lemonade-change	27340	54157	285	54
861	翻转矩阵后的得分	中等	0.69	0	https://leetcode.com/problems/score-after-flipping-matrix	12172	17504	261	65
862	和至少为 K 的最短子数组	难	0.22	1.37	https://leetcode.com/problems/shortest-subarray-with-sum-at-least-k	12762	57503	468	13
863	二叉树中所有距离为 K 的结点	中等	0.47	1.51	https://leetcode.com/problems/all-nodes-distance-k-in-binary-tree	22895	48218	738	14
864	获取所有钥匙的最短路径	难	0.36	1.5	https://leetcode.com/problems/shortest-path-to-get-all-keys	4893	13578	194	6
865	具有所有最深结点的最小子树	中等	0.55	0	https://leetcode.com/problems/smallest-subtree-with-all-the-deepest-nodes	17765	31877	356	94
866	回文素数	中等	0.2	1.05	https://leetcode.com/problems/prime-palindrome	7220	35799	83	256
867	转置矩阵	简单	0.64	0.54	https://leetcode.com/problems/transpose-matrix	45973	71901	200	217
868	二进制间距	简单	0.59	0	https://leetcode.com/problems/binary-gap	23346	39262	125	302
869	重新排序得到 2 的幂	中等	0.51	0	https://leetcode.com/problems/reordered-power-of-2	9318	18264	121	61
870	优势洗牌	中等	0.42	0.82	https://leetcode.com/problems/advantage-shuffle	11248	26484	249	20
871	最低加油次数	难	0.28	2.41	https://leetcode.com/problems/minimum-number-of-refueling-stops	7700	26642	338	6
872	叶子相似的树	简单	0.63	0.31	https://leetcode.com/problems/leaf-similar-trees	45042	71234	385	22
873	最长的斐波那契子序列的长度	中等	0.46	0.54	https://leetcode.com/problems/length-of-longest-fibonacci-subsequence	15693	33970	373	17
874	模拟行走机器人	简单	0.32	0.4	https://leetcode.com/problems/walking-robot-simulation	10018	31292	75	461
875	爱吃香蕉的珂珂	中等	0.46	0	https://leetcode.com/problems/koko-eating-bananas	13094	28387	297	33
876	链表的中间结点	简单	0.64	0.77	https://leetcode.com/problems/middle-of-the-linked-list	63332	98744	504	40
877	石子游戏	中等	0.61	0.54	https://leetcode.com/problems/stone-game	25976	42319	295	544
878	第 N 个神奇数字	难	0.25	0.88	https://leetcode.com/problems/nth-magical-number	5273	20664	107	37
879	盈利计划	难	0.36	0	https://leetcode.com/problems/profitable-schemes	5552	15134	148	16
880	索引处的解码字符串	中等	0.23	0	https://leetcode.com/problems/decoded-string-at-index	6931	30163	240	50
881	救生艇	中等	0.43	0.78	https://leetcode.com/problems/boats-to-save-people	15139	34617	250	23
882	细分图中的可到达结点	难	0.38	0	https://leetcode.com/problems/reachable-nodes-in-subdivided-graph	3279	8626	89	86
883	三维形体投影面积	简单	0.65	0	https://leetcode.com/problems/projection-area-of-3d-shapes	18231	27723	147	491
884	两句话中的不常见单词	简单	0.6	0.45	https://leetcode.com/problems/uncommon-words-from-two-sentences	30751	50556	233	61
885	螺旋矩阵 III	中等	0.64	1	https://leetcode.com/problems/spiral-matrix-iii	8798	13738	97	148
886	可能的二分法	中等	0.4	0	https://leetcode.com/problems/possible-bipartition	13258	32607	294	13
887	鸡蛋掉落	难	0.24	1.69	https://leetcode.com/problems/super-egg-drop	7002	28118	353	38
888	公平的糖果交换	简单	0.56	0.23	https://leetcode.com/problems/fair-candy-swap	27695	48737	291	76
889	根据前序和后序遍历构造二叉树	中等	0.6	1.24	https://leetcode.com/problems/construct-binary-tree-from-preorder-and-postorder-traversal	15415	25639	392	21
890	查找和替换模式	中等	0.71	0.49	https://leetcode.com/problems/find-and-replace-pattern	28398	39930	359	34
891	子序列宽度之和	难	0.28	0	https://leetcode.com/problems/sum-of-subsequence-widths
892	三维形体的表面积	简单	0.56	0.45	https://leetcode.com/problems/surface-area-of-3d-shapes	11068	19770	151	181
893	特殊等价字符串组	简单	0.62	0.87	https://leetcode.com/problems/groups-of-special-equivalent-strings	15128	24145	147	636
894	所有可能的满二叉树	中等	0.7	0.43	https://leetcode.com/problems/all-possible-full-binary-trees	17723	25063	411	35
895	最大频率栈	难	0.56	0	https://leetcode.com/problems/maximum-frequency-stack	13204	23545	431	9
896	单调数列	简单	0.55	0	https://leetcode.com/problems/monotonic-array	44001	79594	266	25
897	递增顺序查找树	简单	0.64	0	https://leetcode.com/problems/increasing-order-search-tree	31013	47977	266	291
898	子数组按位或操作	中等	0.34	0	https://leetcode.com/problems/bitwise-ors-of-subarrays	7856	23098	242	54
899	有序队列	难	0.47	0	https://leetcode.com/problems/orderly-queue	4224	8940	100	128
900	RLE 迭代器	中等	0.5	0.88	https://leetcode.com/problems/rle-iterator	13502	26893	120	53
901	股票价格跨度	中等	0.48	0.63	https://leetcode.com/problems/online-stock-span	10330	21102	212	49
902	最大为 N 的数字组合	难	0.28	0	https://leetcode.com/problems/numbers-at-most-n-given-digit-set	4328	15132	96	24
903	DI 序列的有效排列	难	0.44	1.52	https://leetcode.com/problems/valid-permutations-for-di-sequence	2885	6531	154	22
904	水果成篮	中等	0.41	1.07	https://leetcode.com/problems/fruit-into-baskets	53883	129990	442	678
905	按奇偶排序数组	简单	0.72	0.56	https://leetcode.com/problems/sort-array-by-parity	99018	136395	464	52
906	超级回文数	难	0.3	0	https://leetcode.com/problems/super-palindromes	3259	10731	46	123
907	子数组的最小值之和	中等	0.27	0	https://leetcode.com/problems/sum-of-subarray-minimums	10729	39301	491	34
908	最小差值 I	简单	0.64	0.36	https://leetcode.com/problems/smallest-range-i	23656	36671	101	628
909	蛇梯棋	中等	0.33	1.23	https://leetcode.com/problems/snakes-and-ladders	10453	31228	125	354
910	最小差值 II	中等	0.23	0	https://leetcode.com/problems/smallest-range-ii	5881	24910	172	116
911	在线选举	中等	0.46	1.31	https://leetcode.com/problems/online-election	12477	26615	177	118
912	排序数组	中等	0.63	0.79	https://leetcode.com/problems/sort-an-array	9016	14175	51	67
913	猫和老鼠	难	0.28	2.15	https://leetcode.com/problems/cat-and-mouse	4187	14498	169	32
914	卡牌分组	简单	0.34	0.98	https://leetcode.com/problems/x-of-a-kind-in-a-deck-of-cards	18789	55139	226	48
915	分割数组	中等	0.43	0.6	https://leetcode.com/problems/partition-array-into-disjoint-intervals	10969	25310	194	15
916	单词子集	中等	0.45	0.69	https://leetcode.com/problems/word-subsets	10771	23790	159	50
917	仅仅反转字母	简单	0.55	0.53	https://leetcode.com/problems/reverse-only-letters	26956	48180	253	26
918	环形子数组的最大和	中等	0.31	0.78	https://leetcode.com/problems/maximum-sum-circular-subarray	10394	32692	331	19
919	完全二叉树插入器	中等	0.55	0	https://leetcode.com/problems/complete-binary-tree-inserter	8739	15878	139	36
920	播放列表的数量	难	0.43	1.98	https://leetcode.com/problems/number-of-music-playlists	5288	12057	206	27
921	使括号有效的最少添加	中等	0.7	0.58	https://leetcode.com/problems/minimum-add-to-make-parentheses-valid	25352	36149	264	21
922	按奇偶排序数组 II	简单	0.67	0.33	https://leetcode.com/problems/sort-array-by-parity-ii	43650	65099	286	29
923	三数之和的多种可能	中等	0.33	0	https://leetcode.com/problems/3sum-with-multiplicity	10580	31432	198	38
924	尽量减少恶意软件的传播	难	0.4	0	https://leetcode.com/problems/minimize-malware-spread	11921	29839	150	118
925	长按键入	简单	0.44	0	https://leetcode.com/problems/long-pressed-name	16774	37806	235	28
926	将字符串翻转到单调递增	中等	0.49	0	https://leetcode.com/problems/flip-string-to-monotone-increasing	11837	23901	305	13
927	三等分	难	0.3	1.06	https://leetcode.com/problems/three-equal-parts	3896	12834	84	36
928	尽量减少恶意软件的传播 II	难	0.39	1.55	https://leetcode.com/problems/minimize-malware-spread-ii	4612	11764	83	25
929	独特的电子邮件地址	简单	0.71	0.34	https://leetcode.com/problems/unique-email-addresses	118784	167288	462	127
930	和相同的二元子数组	中等	0.38	1.12	https://leetcode.com/problems/binary-subarrays-with-sum	9674	25439	219	12
931	下降路径最小和	中等	0.58	0	https://leetcode.com/problems/minimum-falling-path-sum	17870	30354	256	31
932	漂亮数组	中等	0.53	0	https://leetcode.com/problems/beautiful-array	5253	9907	173	230
933	最近的请求次数	简单	0.69	0.77	https://leetcode.com/problems/number-of-recent-calls	22507	32361	132	623
934	最短的桥	中等	0.43	1.51	https://leetcode.com/problems/shortest-bridge	10003	22797	282	19
935	骑士拨号器	中等	0.4	1.32	https://leetcode.com/problems/knight-dialer	11623	28505	202	62
936	戳印序列	难	0.35	0	https://leetcode.com/problems/stamping-the-sequence	3131	8725	90	28
937	重新排列日志文件	简单	0.57	0.42	https://leetcode.com/problems/reorder-log-files	21715	37990	137	411
938	二叉搜索树的范围和	简单	0.79	0.45	https://leetcode.com/problems/range-sum-of-bst	56090	70896	340	53
939	最小面积矩形	中等	0.5	1.64	https://leetcode.com/problems/minimum-area-rectangle	17794	35240	245	50
940	不同的子序列 II	难	0.39	1.16	https://leetcode.com/problems/distinct-subsequences-ii	5691	14321	189	9
941	有效的山脉数组	简单	0.35	0.24	https://leetcode.com/problems/valid-mountain-array	19790	56012	138	38
942	增减字符串匹配	简单	0.7	0.53	https://leetcode.com/problems/di-string-match	31284	44656	417	146
943	最短超级串	难	0.38	1.44	https://leetcode.com/problems/find-the-shortest-superstring	4361	11466	145	49
944	删列造序	简单	0.69	0.33	https://leetcode.com/problems/delete-columns-to-make-sorted	21998	31735	45	857
945	使数组唯一的最小增量	中等	0.42	1.08	https://leetcode.com/problems/minimum-increment-to-make-array-unique	10693	24913	159	7
946	验证栈序列	中等	0.57	1.12	https://leetcode.com/problems/validate-stack-sequences	13910	24127	248	6
947	移除最多的同行或同列石头	中等	0.54	0	https://leetcode.com/problems/most-stones-removed-with-same-row-or-column	21452	39561	425	115
948	令牌放置	中等	0.39	0	https://leetcode.com/problems/bag-of-tokens	6267	15942	93	80
949	给定数字能组成的最大时间	简单	0.34	0	https://leetcode.com/problems/largest-time-for-given-digits	8685	25542	66	192
950	按递增顺序显示卡牌	中等	0.71	0.58	https://leetcode.com/problems/reveal-cards-in-increasing-order	14969	20814	316	63
951	翻转等价二叉树	中等	0.65	0	https://leetcode.com/problems/flip-equivalent-binary-trees	15893	24335	229	10
952	按公因数计算最大组件大小	难	0.26	0	https://leetcode.com/problems/largest-component-size-by-common-factor	4550	17342	103	30
953	验证外星语词典	简单	0.55	0	https://leetcode.com/problems/verifying-an-alien-dictionary	20069	36084	175	64
954	二倍数对数组	中等	0.34	0.73	https://leetcode.com/problems/array-of-doubled-pairs	8932	26013	110	20
955	删列造序 II	中等	0.31	0	https://leetcode.com/problems/delete-columns-to-make-sorted-ii	5307	16932	124	25
956	最高的广告牌	难	0.38	0	https://leetcode.com/problems/tallest-billboard	3935	10346	170	8
957	N 天后的牢房	中等	0.38	0	https://leetcode.com/problems/prison-cells-after-n-days	12034	31666	105	212
958	二叉树的完全性检验	中等	0.47	0.44	https://leetcode.com/problems/check-completeness-of-a-binary-tree	14380	30530	221	5
959	由斜杠划分区域	中等	0.62	0	https://leetcode.com/problems/regions-cut-by-slashes	6446	10314	269	62
960	删列造序 III	难	0.52	0	https://leetcode.com/problems/delete-columns-to-make-sorted-iii	3559	6759	135	4
961	重复 N 次的元素	简单	0.72	0.48	https://leetcode.com/problems/n-repeated-element-in-size-2n-array	56168	77495	194	130
962	最大宽度坡	中等	0.41	0	https://leetcode.com/problems/maximum-width-ramp	8977	21595	252	9
963	最小面积矩形 II	中等	0.44	0	https://leetcode.com/problems/minimum-area-rectangle-ii	4480	10113	55	106
964	表示数字的最少运算符	难	0.4	0	https://leetcode.com/problems/least-operators-to-express-number	2248	5559	77	23
965	单值二叉树	简单	0.66	0	https://leetcode.com/problems/univalued-binary-tree	34031	50855	177	31
966	元音拼写检查器	中等	0.41	0	https://leetcode.com/problems/vowel-spellchecker	5020	12043	60	128
967	连续差相同的数字	中等	0.36	0.75	https://leetcode.com/problems/numbers-with-same-consecutive-differences	7169	19415	81	28
968	监控二叉树	难	0.35	0	https://leetcode.com/problems/binary-tree-cameras	6885	19573	260	10
969	煎饼排序	中等	0.62	1.08	https://leetcode.com/problems/pancake-sorting	10308	16500	128	152
970	强整数	简单	0.39	0	https://leetcode.com/problems/powerful-integers	10948	27749	63	136
971	翻转二叉树以匹配先序遍历	中等	0.42	0.99	https://leetcode.com/problems/flip-binary-tree-to-match-preorder-traversal	6009	14044	119	52
972	相等的有理数	难	0.4	0	https://leetcode.com/problems/equal-rational-numbers	2491	6195	24	89
973	最接近原点的 K 个点	中等	0.62	0.86	https://leetcode.com/problems/k-closest-points-to-origin	63545	101958	421	45
974	和可被 K 整除的子数组	中等	0.44	1.01	https://leetcode.com/problems/subarray-sums-divisible-by-k	11418	25503	271	24
975	奇偶跳	难	0.48	1.04	https://leetcode.com/problems/odd-even-jump	10809	22532	295	74
976	三角形的最大周长	简单	0.57	0.44	https://leetcode.com/problems/largest-perimeter-triangle	15718	27428	157	21
977	有序数组的平方	简单	0.72	0.7	https://leetcode.com/problems/squares-of-a-sorted-array	70827	98329	293	41
978	最长湍流子数组	中等	0.45	0.56	https://leetcode.com/problems/longest-turbulent-subarray	10044	22079	87	40
979	在二叉树中分配硬币	中等	0.67	0.47	https://leetcode.com/problems/distribute-coins-in-binary-tree	12970	19368	489	16
980	不同路径 III	难	0.71	0	https://leetcode.com/problems/unique-paths-iii	9021	12690	166	27
981	基于时间的键值存储	中等	0.5	0	https://leetcode.com/problems/time-based-key-value-store	12606	24926	197	34
982	按位与为零的三元组	难	0.53	1.12	https://leetcode.com/problems/triples-with-bitwise-and-equal-to-zero	4547	8444	52	76
983	最低票价	中等	0.57	0.79	https://leetcode.com/problems/minimum-cost-for-tickets	13755	24013	440	9
984	不含 AAA 或 BBB 的字符串	中等	0.33	0	https://leetcode.com/problems/string-without-aaa-or-bbb	9533	28343	88	163
985	查询后的偶数和	简单	0.63	0.21	https://leetcode.com/problems/sum-of-even-numbers-after-queries	20475	32147	144	64
986	区间列表的交集	中等	0.63	0	https://leetcode.com/problems/interval-list-intersections	16531	26250	245	15
987	二叉树的垂序遍历	中等	0.31	0	https://leetcode.com/problems/vertical-order-traversal-of-a-binary-tree	9630	30171	124	265
988	从叶结点开始的最小字符串	中等	0.46	0.61	https://leetcode.com/problems/smallest-string-starting-from-leaf	10618	22951	126	21
989	数组形式的整数加法	简单	0.44	0.33	https://leetcode.com/problems/add-to-array-form-of-integer	15566	34751	122	24
990	等式方程的可满足性	中等	0.39	0	https://leetcode.com/problems/satisfiability-of-equality-equations	7325	18399	188	3
991	坏了的计算器	中等	0.4	0.75	https://leetcode.com/problems/broken-calculator	6340	15771	131	52
992	K 个不同整数的子数组	难	0.44	0.81	https://leetcode.com/problems/subarrays-with-k-different-integers	6044	13540	284	6
993	二叉树的堂兄弟节点	简单	0.52	0.46	https://leetcode.com/problems/cousins-in-binary-tree	16795	31986	176	10
994	腐烂的橘子	简单	0.46	1.53	https://leetcode.com/problems/rotting-oranges	11664	25212	235	11
995	K 连续位的最小翻转次数	难	0.48	1.48	https://leetcode.com/problems/minimum-number-of-k-consecutive-bit-flips	4786	9825	119	22
996	正方形数组的数目	难	0.47	0	https://leetcode.com/problems/number-of-squareful-arrays	5456	11430	128	10
997	找到小镇的法官	简单	0.49	0.45	https://leetcode.com/problems/find-the-town-judge	16546	33685	146	21
998	最大二叉树 II	中等	0.61	0	https://leetcode.com/problems/maximum-binary-tree-ii	7534	12189	69	163
999	车的可用捕获量	简单	0.66	0.6	https://leetcode.com/problems/available-captures-for-rook	12828	19412	73	186
1000	合并石头的最低成本	难	0.31	0	https://leetcode.com/problems/minimum-cost-to-merge-stones	3432	10940	163	17
1001	网格照明	难	0.34	0	https://leetcode.com/problems/grid-illumination	4401	12833	90	36
1002	查找常用字符	简单	0.65	0.56	https://leetcode.com/problems/find-common-characters	23106	35086	251	39
1003	检查替换后的词是否有效	中等	0.51	0	https://leetcode.com/problems/check-if-word-is-valid-after-substitutions	8872	17119	72	124
1004	最大连续1的个数 III	中等	0.53	1.44	https://leetcode.com/problems/max-consecutive-ones-iii	10983	20657	213	6
1005	K 次取反后最大化的数组和	简单	0.49	0.27	https://leetcode.com/problems/maximize-sum-of-array-after-k-negations	11241	22680	98	18
1006	笨阶乘	中等	0.53	0	https://leetcode.com/problems/clumsy-factorial	7062	13152	39	83
1007	行相等的最少多米诺旋转	中等	0.47	0.75	https://leetcode.com/problems/minimum-domino-rotations-for-equal-row	8199	17170	51	59
1008	先序遍历构造二叉树	中等	0.72	0.99	https://leetcode.com/problems/construct-binary-search-tree-from-preorder-traversal	13577	18616	206	10
1009	十进制整数的反码	简单	0.58	0	https://leetcode.com/problems/complement-of-base-10-integer	11039	18740	54	12
1010	总持续时间可被 60 整除的歌曲	简单	0.45	0.25	https://leetcode.com/problems/pairs-of-songs-with-total-durations-divisible-by-60	11234	24684	139	10
1011	在 D 天内送达包裹的能力	中等	0.53	1	https://leetcode.com/problems/capacity-to-ship-packages-within-d-days	9229	17393	249	9
1012	至少有 1 位重复的数字	难	0.34	1.81	https://leetcode.com/problems/numbers-with-repeated-digits	2546	7401	74	27
1013	将数组分成和相等的三个部分	简单	0.55	0.79	https://leetcode.com/problems/partition-array-into-three-parts-with-equal-sum	12887	23391	118	21
1014	最佳观光组合	中等	0.48	1.56	https://leetcode.com/problems/best-sightseeing-pair	7150	14666	178	11
1015	可被 K 整除的最小整数	中等	0.28	0	https://leetcode.com/problems/smallest-integer-divisible-by-k	5399	19243	47	154
1016	子串能表示从 1 到 N 数字的二进制串	中等	0.61	0	https://leetcode.com/problems/binary-string-with-substrings-representing-1-to-n	6475	10518	37	162
1017	负二进制转换	中等	0.56	0.77	https://leetcode.com/problems/convert-to-base-2	5602	9904	66	90
1018	可被 5 整除的二进制前缀	简单	0.46	0	https://leetcode.com/problems/binary-prefix-divisible-by-5	9920	21407	60	47
1019	链表中的下一个更大节点	中等	0.56	0.29	https://leetcode.com/problems/next-greater-node-in-linked-list	11323	20088	193	16
1020	飞地的数量	中等	0.54	1.04	https://leetcode.com/problems/number-of-enclaves	6999	12734	83	13
1021	删除最外层的括号	简单	0.76	0.21	https://leetcode.com/problems/remove-outermost-parentheses	23381	30688	118	167
1022	从根到叶的二进制数之和	简单	0.54	0	https://leetcode.com/problems/sum-of-root-to-leaf-binary-numbers	11175	20623	87	51
1023	驼峰式匹配	中等	0.56	0	https://leetcode.com/problems/camelcase-matching	7206	12736	62	55
1024	视频拼接	中等	0.47	0.56	https://leetcode.com/problems/video-stitching	7469	15850	140	15
1025	除数博弈	简单	0.63	0.16	https://leetcode.com/problems/divisor-game	11522	18281	83	219
1026	节点与其祖先之间的最大差值	中等	0.59	0.86	https://leetcode.com/problems/maximum-difference-between-node-and-ancestor	8391	14158	122	8
1027	最长等差数列	中等	0.46	0.58	https://leetcode.com/problems/longest-arithmetic-sequence	7534	16025	153	11
1028	从先序遍历还原二叉树	难	0.7	0	https://leetcode.com/problems/recover-a-tree-from-preorder-traversal	6157	8691	150	5
1029	两地调度	简单	0.53	0.82	https://leetcode.com/problems/two-city-scheduling	8732	16245	199	25
1030	距离顺序排列矩阵单元格	简单	0.65	0.28	https://leetcode.com/problems/matrix-cells-in-distance-order	9029	13773	65	36
1031	两个非重叠子数组的最大和	中等	0.55	0.77	https://leetcode.com/problems/maximum-sum-of-two-non-overlapping-subarrays	5611	10108	148	7
1032	字符流	难	0.41	1.31	https://leetcode.com/problems/stream-of-characters	4787	11686	81	23
1033	移动石子直到连续	简单	0.34	0.33	https://leetcode.com/problems/moving-stones-until-consecutive	5595	16082	22	229
1034	边框着色	中等	0.42	0	https://leetcode.com/problems/coloring-a-border	4386	10330	44	100
1035	不相交的线	中等	0.51	0	https://leetcode.com/problems/uncrossed-lines	5085	9889	150	5
1036	逃离大迷宫	难	0.37	1.6	https://leetcode.com/problems/escape-a-large-maze	3281	8878	74	47
1037	有效的回旋镖	简单	0.37	0.34	https://leetcode.com/problems/valid-boomerang	7085	18881	33	109
1038	从二叉搜索树到更大和树	中等	0.8	0	https://leetcode.com/problems/binary-search-tree-to-greater-sum-tree	9348	11664	142	15
1039	多边形三角剖分的最低得分	中等	0.4	0	https://leetcode.com/problems/minimum-score-triangulation-of-polygon	3096	7596	147	18
1040	移动石子直到连续 II	中等	0.45	1.81	https://leetcode.com/problems/moving-stones-until-consecutive-ii	1565	3424	58	59
1041	困于环中的机器人	简单	0.42	0	https://leetcode.com/problems/robot-bounded-in-circle	5571	13035	71	57
1042	不邻接植花	简单	0.47	1	https://leetcode.com/problems/flower-planting-with-no-adjacent	4916	10280	51	74
1043	分隔数组以得到最大和	中等	0.61	0.7	https://leetcode.com/problems/partition-array-for-maximum-sum	4461	7248	152	12
1044	最长重复子串	难	0.22	1.99	https://leetcode.com/problems/longest-duplicate-substring	1792	7801	50	54
1045	买下所有产品的客户	中等	0.63	0	https://leetcode.com/problems/customers-who-bought-all-products
1046	最后一块石头的重量	简单	0.63	0.42	https://leetcode.com/problems/last-stone-weight	9275	14715	75	6
1047	删除字符串中的所有相邻重复项	简单	0.62	0.12	https://leetcode.com/problems/remove-all-adjacent-duplicates-in-string	10561	16770	103	11
1048	最长字符串链	中等	0.46	0	https://leetcode.com/problems/longest-string-chain	5889	12564	77	7
1049	最后一块石头的重量 II	中等	0.38	0.63	https://leetcode.com/problems/last-stone-weight-ii	3734	9586	137	4
1050	合作过至少三次的演员和导演	简单	0.77	0	https://leetcode.com/problems/actors-and-directors-who-cooperated-at-least-three-times
1051	高度检查器	简单	0.7	0.3	https://leetcode.com/problems/height-checker	8910	12674	32	248
1052	爱生气的书店老板	中等	0.51	0.47	https://leetcode.com/problems/grumpy-bookstore-owner
1053	交换一次的先前排列	中等	0.47	0	https://leetcode.com/problems/previous-permutation-with-one-swap	4055	8602	34	132
1054	距离相等的条形码	中等	0.38	0.57	https://leetcode.com/problems/distant-barcodes	4523	11861	92	3
1055	形成字符串的最短路径	中等	0.57	0	https://leetcode.com/problems/shortest-way-to-form-string	1
1056	易混淆数	简单	0.48	0	https://leetcode.com/problems/confusing-number	1
1057	校园自行车分配	中等	0.58	0	https://leetcode.com/problems/campus-bikes	1
1058	最小化舍入误差以满足目标	中等	0.38	0	https://leetcode.com/problems/minimize-rounding-error-to-meet-target	1
1059	从始点到终点的所有路径	中等	0.45	0	https://leetcode.com/problems/all-paths-from-source-lead-to-destination	0
1060	有序数组中的缺失元素	中等	0.53	0	https://leetcode.com/problems/missing-element-in-sorted-array	1
1061	按字典序排列最小的等效字符串	中等	0.62	0	https://leetcode.com/problems/lexicographically-smallest-equivalent-string	0
1062	最长重复子串	中等	0.49	0	https://leetcode.com/problems/longest-repeating-substring	2
1063	有效子数组的数目	难	0.77	0	https://leetcode.com/problems/number-of-valid-subarrays	0
1064	不动点	简单	0.82	0	https://leetcode.com/problems/fixed-point
1065	字符串的索引对	简单	0.58	0	https://leetcode.com/problems/index-pairs-of-a-string	2
1066	校园自行车分配 II	中等	0.39	0	https://leetcode.com/problems/campus-bikes-ii	3
1067	范围内的数字计数	难	0.32	0	https://leetcode.com/problems/digit-count-in-range	1
1068	Product Sales Analysis I	简单	0.81	0	https://leetcode.com/problems/product-sales-analysis-i	0
1069	Product Sales Analysis II	简单	0.79	0	https://leetcode.com/problems/product-sales-analysis-ii	0
1070	Product Sales Analysis III	中等	0.39	0	https://leetcode.com/problems/product-sales-analysis-iii	0
1071	字符串的最大公因子	简单	0.52	0.44	https://leetcode.com/problems/greatest-common-divisor-of-strings	5001	9531	54	21
1072	按列翻转得到最大值等行数	中等	0.54	0	https://leetcode.com/problems/flip-columns-for-maximum-number-of-equal-rows	3274	5971	79	7
1073	负二进制数相加	中等	0.3	0	https://leetcode.com/problems/adding-two-negabinary-numbers	2516	8122	41	21
1074	元素和为目标值的子矩阵数量	难	0.59	0	https://leetcode.com/problems/number-of-submatrices-that-sum-to-target	1871	3121	60	3
1075	Project Employees I	简单	0.6	0	https://leetcode.com/problems/project-employees-i	1
1076	Project Employees II	简单	0.51	0	https://leetcode.com/problems/project-employees-ii	3
1077	Project Employees III	中等	0.78	0	https://leetcode.com/problems/project-employees-iii
1078	Bigram 分词	简单	0.62	0.17	https://leetcode.com/problems/occurrences-after-bigram
1079	活字印刷	中等	0.68	0.4	https://leetcode.com/problems/letter-tile-possibilities
1080	根到叶路径上的不足节点	中等	0.37	0	https://leetcode.com/problems/insufficient-nodes-in-root-to-leaf-paths
1081	不同字符的最小子序列	中等	0.36	0	https://leetcode.com/problems/smallest-subsequence-of-distinct-characters
1082	Sales Analysis I	简单	0.74	1.09	https://leetcode.com/problems/sales-analysis-i
1083	Sales Analysis II	简单	0.43	0	https://leetcode.com/problems/sales-analysis-ii
1084	Sales Analysis III	简单	0.37	0.98	https://leetcode.com/problems/sales-analysis-iii
1085	最小元素各数位之和	简单	0.71	0	https://leetcode.com/problems/sum-of-digits-in-the-minimum-number
1086	前五科的均分	简单	0.64	0	https://leetcode.com/problems/high-five
1087	字母切换	中等	0.35	0	https://leetcode.com/problems/brace-expansion
1088	易混淆数 II	困难	0.2	0	https://leetcode.com/problems/confusing-number-ii
1089	复写零	简单	0.53	0	https://leetcode.com/problems/duplicate-zeros
1090	受标签影响的最大值	中等	0.41	0	https://leetcode.com/problems/largest-values-from-labels
1091	二进制矩阵中的最短路径	中等	0.23	0.54	https://leetcode.com/problems/shortest-path-in-binary-matrix
1092	最短公共超序列	困难	0.33	0	https://leetcode.com/problems/shortest-common-supersequence
1093	大样本统计	中等	0.33	0	https://leetcode.com/problems/statistics-from-a-large-sample
1094	拼车	中等	0.48	0.31	https://leetcode.com/problems/car-pooling
1095	山脉数组中查找目标值	困难	0.25	0.71	https://leetcode.com/problems/find-in-mountain-array
1096	花括号展开 II	困难	0.4	1.13	https://leetcode.com/problems/brace-expansion-ii
1097	Game Play Analysis V	困难	0.27	0	https://leetcode.com/problems/game-play-analysis-v
1098	Unpopular Books	中等	0.38	1.19	https://leetcode.com/problems/unpopular-books
1099	小于 K 的两数之和	简单	0.46	0	https://leetcode.com/problems/two-sum-less-than-k
1100	长度为 K 的无重复字符子串	中等	0.58	0	https://leetcode.com/problems/find-k-length-substrings-with-no-repeated-characters
1101	彼此熟识的最早时间	中等	0.56	0	https://leetcode.com/problems/the-earliest-moment-when-everyone-become-friends
1102	得分最高的路径	中等	0.18	0	https://leetcode.com/problems/path-with-maximum-minimum-value
1103	分糖果 II	简单	0.59	0.04	https://leetcode.com/problems/distribute-candies-to-people
1104	二叉树寻路	中等	0.6	0	https://leetcode.com/problems/path-in-zigzag-labelled-binary-tree
1105	填充书架	中等	0.48	0	https://leetcode.com/problems/filling-bookcase-shelves
1106	解析布尔表达式	困难	0.51	0.19	https://leetcode.com/problems/parsing-a-boolean-expression
1108	IP 地址无效化	简单	0.8	0.06	https://leetcode.com/problems/defanging-an-ip-address
1109	航班预订统计	中等	0.27	0	https://leetcode.com/problems/corporate-flight-bookings
1110	删点成林	中等	0.51	0	https://leetcode.com/problems/delete-nodes-and-return-forest
1111	有效括号的嵌套深度	中等	0.63	0.23	https://leetcode.com/problems/maximum-nesting-depth-of-two-valid-parentheses-strings
1114	按序打印	简单	0.55	0.73	https://leetcode.com/problems/print-in-order
1115	交替打印FooBar	中等	0.57	0.21	https://leetcode.com/problems/print-foobar-alternately
1116	打印零与奇偶数	中等	0.46	0.66	https://leetcode.com/problems/print-zero-even-odd
1117	H2O 生成	困难	0.32	0.44	https://leetcode.com/problems/building-h2o
1118	一月有多少天	简单	0.63	0	https://leetcode.com/problems/number-of-days-in-a-month
1119	删去字符串中的元音	简单	0.88	0	https://leetcode.com/problems/remove-vowels-from-a-string
1120	子树的最大平均值	中等	0.54	0	https://leetcode.com/problems/maximum-average-subtree
1121	将数组分成几个递增序列	困难	0.47	0	https://leetcode.com/problems/divide-array-into-increasing-sequences
1122	数组的相对排序	简单	0.61	0.21	https://leetcode.com/problems/relative-sort-array
1123	最深叶节点的最近公共祖先	中等	0.55	0.17	https://leetcode.com/problems/lowest-common-ancestor-of-deepest-leaves
1124	表现良好的最长时间段	中等	0.14	0.1	https://leetcode.com/problems/longest-well-performing-interval
1125	最小的必要团队	困难	0.32	0	https://leetcode.com/problems/smallest-sufficient-team
1128	等价多米诺骨牌对的数量	简单	0.32	0.13	https://leetcode.com/problems/number-of-equivalent-domino-pairs
1129	颜色交替的最短路径	中等	0.26	0	https://leetcode.com/problems/shortest-path-with-alternating-colors
1130	叶值的最小代价生成树	中等	0.48	0	https://leetcode.com/problems/minimum-cost-tree-from-leaf-values
1131	绝对值表达式的最大值	中等	0.28	0.39	https://leetcode.com/problems/maximum-of-absolute-value-expression
1133	最大唯一数	简单	0.54	0	https://leetcode.com/problems/largest-unique-number
1134	阿姆斯特朗数	简单	0.75	0	https://leetcode.com/problems/armstrong-number
1135	最低成本联通所有城市	中等	0.23	0	https://leetcode.com/problems/connecting-cities-with-minimum-cost
1136	平行课程	困难	0.45	0	https://leetcode.com/problems/parallel-courses
1137	第 N 个泰波那契数    新	简单	0.57	0	https://leetcode.com/problems/n-th-tribonacci-number
1138	字母板上的路径    新	中等	0.28	0	https://leetcode.com/problems/alphabet-board-path
1139	最大的以 1 为边界的正方形    新	中等	0.32	0	https://leetcode.com/problems/largest-1-bordered-square
1140	石子游戏 II    新	中等	0.45	0	https://leetcode.com/problems/stone-game-ii

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