| Merge k Sorted Lists | Hard | 58.9% | 77.2% |
| Valid Number | Hard | 22.6% | 70.2% |
| Minimum Window Substring | Hard | 47.0% | 68.6% |
| Sliding Window Median | Hard | 38.9% | 65.0% |
| Making A Large Island | Hard | 56.3% | 65.0% |
| Trapping Rain Water | Hard | 66.8% | 60.6% |
| Median of Two Sorted Arrays | Hard | 46.0% | 58.2% |
| Robot Room Cleaner | Hard | 77.9% | 51.9% |
| Remove Invalid Parentheses | Hard | 49.8% | 47.0% |
| Vertical Order Traversal of a Binary Tree | Hard | 53.3% | 47.0% |
| Regular Expression Matching | Hard | 30.5% | 46.2% |
| Expression Add Operators | Hard | 42.8% | 45.2% |
| Largest Rectangle in Histogram | Hard | 49.4% | 42.7% |
| Text Justification | Hard | 50.5% | 41.0% |
| Swim in Rising Water | Hard | 67.6% | 40.7% |
| Binary Tree Maximum Path Sum | Hard | 42.0% | 40.7% |
| Word Ladder | Hard | 44.9% | 40.7% |
| Find Median from Data Stream | Hard | 54.2% | 40.7% |
| Valid Palindrome III | Hard | 49.1% | 40.7% |
| Maximal Rectangle | Hard | 58.1% | 37.0% |
| Word Break II | Hard | 55.1% | 36.3% |
| Reverse Nodes in k-Group | Hard | 65.4% | 36.2% |
| Alien Dictionary | Hard | 37.1% | 35.4% |
| Shortest Distance from All Buildings | Hard | 44.9% | 35.4% |
| First Missing Positive | Hard | 42.5% | 35.4% |
| Wildcard Matching | Hard | 31.4% | 35.4% |
| N-Queens | Hard | 75.0% | 33.6% |
| Best Time to Buy and Sell Stock III | Hard | 53.2% | 32.0% |
| Sudoku Solver | Hard | 65.4% | 30.6% |
| Max Points on a Line | Hard | 30.3% | 29.9% |
| Longest Valid Parentheses | Hard | 38.1% | 26.9% |
| Substring with Concatenation of All Words | Hard | 34.0% | 16.1% |
| Word Search II | Hard | 38.1% | 15.8% |
