Leetcode-JavaScript

Easy ----------------

String

• 344. Reverse String
• 387. First Unique Character in a String

Array

• 1. Two Sum
• 53. Maximum Subarray
• 121. Best Time to Buy and Sell Stock
• 136. Single Number
• 217. Contains Duplicate
• 412. Fizz Buzz

Stack

• 155. Min Stack

Linked List

• 234. Palindrome Linked List

Tree

• 104. Maximum Depth of Binary Tree
• 270. Closest Binary Search Tree Value

Medium --------------

String

• 3. Longest Substring w/o Repeating Characters
• 6. ZigZag Conversion
• 17. Letter Combinations of a Phone Number
• 22. Generate Parentheses
• 46. Permutations

Array

• 15. 3Sum
• 48. Rotate Image
• 75. Sort Colors
• 152. Maximum Product Subarray
• 153. Find Minimum in Rotated Sorted Array
• 238. Product of Array Except Self

Tree

• 979. Distribute Coins in Binary Tree
• 106. Construct Binary Tree from Inorder and Postorder Traversal

Graph

• 200. Number of Islands
• 1129. Shortest Path with Alternating Colors

Hard ----------------

Array

• 239. Sliding Window Maximum