LeetCode LeetCode # Title Solution 1 Two Sum TypeScript 5 Longest Palindromic Substring TypeScript 9 Palindrome Number TypeScript 13 Roman to Integer TypeScript 14 Longest Common Prefix TypeScript 20 Valid Parentheses TypeScript 21 Merge Two Sorted Lists TypeScript 26 Remove Duplicates from Sorted Array TypeScript 66 Plus One TypeScript 69 Sqrt(x) TypeScript 70 Climbing Stairs TypeScript 88 Merge Sorted Array TypeScript 94 Binary Tree Inorder Traversal TypeScript 104 Maximum Depth of Binary Tree TypeScript 237 Delete Node in a Linked List TypeScript 344 Reverse String TypeScript 1004 Max Consecutive Ones III TypeScript