| Trapping Rain Water | Hard | 66.8% | 83.7% |
| Subarray With Elements Greater Than Varying Threshold | Hard | 45.3% | 83.7% |
| Text Justification | Hard | 50.5% | 79.6% |
| N-Queens | Hard | 75.0% | 74.6% |
| Minimum Window Substring | Hard | 47.0% | 74.6% |
| Making A Large Island | Hard | 56.3% | 68.2% |
| Merge k Sorted Lists | Hard | 58.9% | 68.2% |
| Basic Calculator III | Hard | 53.2% | 66.6% |
| Word Ladder | Hard | 44.9% | 65.0% |
| Longest Increasing Path in a Matrix | Hard | 56.3% | 63.2% |
| Meeting Rooms III | Hard | 51.6% | 61.2% |
| Word Search II | Hard | 38.1% | 61.2% |
| Serialize and Deserialize Binary Tree | Hard | 60.4% | 59.1% |
| Binary Tree Maximum Path Sum | Hard | 42.0% | 59.1% |
| Minimum Operations to Make Character Frequencies Equal | Hard | 26.4% | 59.1% |
| Minimum Cost Good Caption | Hard | 20.5% | 59.1% |
| Lexicographically Smallest Generated String | Hard | 31.5% | 59.1% |
| Word Break II | Hard | 55.1% | 59.1% |
| Minimum Moves to Pick K Ones | Hard | 21.5% | 59.1% |
| Basic Calculator | Hard | 46.6% | 56.7% |
| Bus Routes | Hard | 47.1% | 56.7% |
| Shortest Path in a Grid with Obstacles Elimination | Hard | 46.1% | 56.7% |
| Find Median from Data Stream | Hard | 54.2% | 56.7% |
| Sliding Window Maximum | Hard | 48.5% | 54.1% |
| Reverse Nodes in k-Group | Hard | 65.4% | 51.2% |
| Regular Expression Matching | Hard | 30.5% | 51.2% |
| Alien Dictionary | Hard | 37.1% | 51.2% |
| Longest Valid Parentheses | Hard | 38.1% | 47.7% |
| Design In-Memory File System | Hard | 48.4% | 47.7% |
| Super Egg Drop | Hard | 29.9% | 47.7% |
| Frog Jump | Hard | 47.1% | 43.7% |
| Split Message Based on Limit | Hard | 42.0% | 43.7% |
| Minimize Malware Spread | Hard | 43.0% | 43.7% |
| Numbers At Most N Given Digit Set | Hard | 44.6% | 43.7% |
| Remove Invalid Parentheses | Hard | 49.8% | 43.7% |
| Largest Rectangle in Histogram | Hard | 49.4% | 43.7% |
| Best Time to Buy and Sell Stock III | Hard | 53.2% | 38.8% |
| Insert Delete GetRandom O(1) - Duplicates allowed | Hard | 36.4% | 38.8% |
| Design Search Autocomplete System | Hard | 49.7% | 38.8% |
| Number of Visible People in a Queue | Hard | 72.4% | 38.8% |
| Stickers to Spell Word | Hard | 50.6% | 38.8% |
| Best Time to Buy and Sell Stock IV | Hard | 49.5% | 38.8% |
| Robot Room Cleaner | Hard | 77.9% | 38.8% |
| Serialize and Deserialize N-ary Tree | Hard | 68.6% | 32.6% |
| Number of Islands II | Hard | 40.4% | 32.6% |
| Shortest Distance from All Buildings | Hard | 44.9% | 32.6% |
| LFU Cache | Hard | 48.6% | 32.6% |
| Minimum Difficulty of a Job Schedule | Hard | 59.7% | 32.6% |
| Concatenated Words | Hard | 49.7% | 32.6% |
| Candy | Hard | 48.0% | 32.6% |
| Max Stack | Hard | 45.9% | 32.6% |
| Longest Duplicate Substring | Hard | 31.1% | 32.6% |
| Number of Atoms | Hard | 65.1% | 32.6% |
| All O`one Data Structure | Hard | 44.2% | 24.3% |
| Department Top Three Salaries | Hard | 59.9% | 24.3% |
| Median of Two Sorted Arrays | Hard | 46.0% | 24.3% |
| Parallel Courses III | Hard | 66.8% | 24.3% |
| Expression Add Operators | Hard | 42.8% | 24.3% |
| Rearrange String k Distance Apart | Hard | 39.9% | 24.3% |
| Valid Palindrome III | Hard | 49.1% | 24.3% |
| Maximum Spending After Buying Items | Hard | 61.3% | 24.3% |
| Rearranging Fruits | Hard | 57.5% | 24.3% |
| Human Traffic of Stadium | Hard | 50.8% | 24.3% |
| K-th Smallest in Lexicographical Order | Hard | 46.2% | 24.3% |
| Put Marbles in Bags | Hard | 72.2% | 24.3% |
| Find Maximum Non-decreasing Array Length | Hard | 18.5% | 24.3% |
| Maximum Performance of a Team | Hard | 47.7% | 24.3% |
| Consecutive Numbers Sum | Hard | 42.6% | 24.3% |
| Subarrays with K Different Integers | Hard | 67.6% | 24.3% |
| Maximum Profit in Job Scheduling | Hard | 54.6% | 24.3% |
| 24 Game | Hard | 59.3% | 24.3% |
| Employee Free Time | Hard | 72.8% | 24.3% |
