LeetCode Solutions # Title Solution Difficulty Performance Percentile 1 Two Sum C# Easy 96% 3 Longest Substring Without Repeating Characters C# Medium 8% 7 Reverse Integer C# Easy 98% 9 Palindrome Number C# Easy 22% 20 Valid Parentheses C# Easy 27% 26 Remove Duplicates from Sorted Array C# Easy 49% 35 Search Insert Position C# Easy 99% 58 Length of Last Word C# Easy 59% 94 Binary Tree Inorder Traversal C# Medium 88% 104 Maximum Depth of Binary Tree C# Easy 87% 125 Valid Palindrome C# Easy 13% 136 Single Number C# Easy 73% 150 Evaluate Reverse Polish Notation C# Medium 37% 155 Min Stack C# Easy 8% 200 Number of Islands C# Medium 40% 217 Contains Duplicate C# Easy 81% 268 Missing Number C# Easy 39% 344 Reverse String C# Easy 95% 387 First Unique Character in a String C# Easy 59% 412 FizzBuzz C# Easy 61% 485 Max Consecutive Ones C# Easy 33% 509 Fibonacci Number C# Easy 100% 622 Design Circular Queue C# Medium 86% 709 To Lower Case C# Easy 98% 724 Find Pivot Index C# Easy 33% 739 Daily Temperatures C# Medium 46% 747 Largest Number At Least Twice of Others C# Easy 53% 771 Jewels and Stones C# Easy 100% 832 Flipping an Image C# Easy 22% 905 Sort Array By Parity C# Easy 32% 917 Reverse Only Letters C# Easy 100%