A collection of LeetCode questions to ace the coding interview!

LeetCode Topics

Array

0001-two-sum
0015-3sum
0018-4sum
0031-next-permutation
0048-rotate-image
0053-maximum-subarray
0056-merge-intervals
0073-set-matrix-zeroes
0074-search-a-2d-matrix
0088-merge-sorted-array
0118-pascals-triangle
0121-best-time-to-buy-and-sell-stock
0128-longest-consecutive-sequence
0169-majority-element
0229-majority-element-ii
0268-missing-number
0287-find-the-duplicate-number
0948-sort-an-array

Dynamic Programming

0053-maximum-subarray
0062-unique-paths
0118-pascals-triangle
0121-best-time-to-buy-and-sell-stock

Hash Table

0001-two-sum
0013-roman-to-integer
0073-set-matrix-zeroes
0128-longest-consecutive-sequence
0169-majority-element
0229-majority-element-ii
0268-missing-number

Matrix

0048-rotate-image
0073-set-matrix-zeroes
0074-search-a-2d-matrix

Two Pointers

0015-3sum
0018-4sum
0031-next-permutation
0088-merge-sorted-array
0287-find-the-duplicate-number

Divide and Conquer

0053-maximum-subarray
0169-majority-element
0948-sort-an-array

Math

0009-palindrome-number
0013-roman-to-integer
0048-rotate-image
0050-powx-n
0062-unique-paths
0268-missing-number

Sorting

0015-3sum
0018-4sum
0056-merge-intervals
0088-merge-sorted-array
0169-majority-element
0229-majority-element-ii
0268-missing-number
0948-sort-an-array

Binary Search

0074-search-a-2d-matrix
0268-missing-number
0287-find-the-duplicate-number

Bit Manipulation

0268-missing-number
0287-find-the-duplicate-number

Heap (Priority Queue)

0948-sort-an-array

Merge Sort

0948-sort-an-array

Bucket Sort

0948-sort-an-array

Radix Sort

0948-sort-an-array

Counting Sort

0169-majority-element
0229-majority-element-ii
0948-sort-an-array

Recursion

0050-powx-n

Combinatorics

0062-unique-paths

Union Find

0128-longest-consecutive-sequence

String

0013-roman-to-integer