| Title | Acceptance | Level |
|---|---|---|
| Convert Binary Number in a Linked List to Integer | 80.4% | Easy |
| Reverse String | 68.5% | Easy |
| Transpose Matrix | 62.8% | Easy |
| Design HashMap | 61.3% | Easy |
| Valid Anagram | 56.9% | Easy |
| Two Sum IV - Input is a BST | 55.5% | Easy |
| First Unique Character in a String | 53.4% | Easy |
| Missing Number | 51.7% | Easy |
| Two Sum | 45.6% | Easy |
| Remove Duplicates from Sorted Array | 45.1% | Easy |
| Min Stack | 44.5% | Easy |
| Valid Parentheses | 39.0% | Easy |
| Minimum Add to Make Parentheses Valid | 73.7% | Medium |
| Product of Array Except Self | 60.1% | Medium |
| Group Anagrams | 56.9% | Medium |
| Binary Tree Zigzag Level Order Traversal | 48.3% | Medium |
| Letter Combinations of a Phone Number | 46.8% | Medium |
| Number of Islands | 46.8% | Medium |
| Merge Intervals | 39.3% | Medium |
| Add Two Numbers | 33.9% | Medium |
| Word Ladder | 29.6% | Medium |
| Longest Palindromic Substring | 29.5% | Medium |
| 3Sum | 26.8% | Medium |
| Trapping Rain Water | 48.9% | Hard |