| Title | Acceptance | Level |
|---|---|---|
| Reverse Linked List | 62.5% | Easy |
| Majority Element | 58.7% | Easy |
| Min Stack | 44.5% | Easy |
| Valid Parentheses | 39.0% | Easy |
| Valid Palindrome | 36.7% | Easy |
| Excel Sheet Column Title | 31.1% | Easy |
| Generate Parentheses | 62.7% | Medium |
| Convert Sorted List to Binary Search Tree | 47.7% | Medium |
| Number of Islands | 46.8% | Medium |
| Verify Preorder Sequence in Binary Search Tree | 45.7% | Medium |
| Flatten 2D Vector | 45.7% | Medium |
| Course Schedule | 43.1% | Medium |
| Graph Valid Tree | 42.2% | Medium |
| Course Schedule II | 40.7% | Medium |
| Majority Element II | 35.6% | Medium |
| LRU Cache | 33.2% | Medium |
| N-Queens II | 57.9% | Hard |
| Trapping Rain Water | 48.9% | Hard |
| Sliding Window Maximum | 43.0% | Hard |
| Shortest Distance from All Buildings | 41.4% | Hard |
| Median of Two Sorted Arrays | 29.6% | Hard |