| Number of Islands | Medium | 63.8% | 99.3% |
| Number of Distinct Islands | Medium | 62.7% | 87.2% |
| Course Schedule II | Medium | 55.0% | 86.5% |
| Course Schedule | Medium | 50.8% | 83.7% |
| Word Search | Medium | 46.9% | 76.8% |
| Making A Large Island | Hard | 56.3% | 68.2% |
| Longest Increasing Path in a Matrix | Hard | 56.3% | 63.2% |
| Max Area of Island | Medium | 73.8% | 63.2% |
| Serialize and Deserialize Binary Tree | Hard | 60.4% | 59.1% |
| Binary Tree Maximum Path Sum | Hard | 42.0% | 59.1% |
| Binary Tree Right Side View | Medium | 69.5% | 56.7% |
| Possible Bipartition | Medium | 52.4% | 54.1% |
| Lowest Common Ancestor of a Binary Tree | Medium | 68.8% | 54.1% |
| Pacific Atlantic Water Flow | Medium | 60.6% | 54.1% |
| Shortest Bridge | Medium | 59.3% | 54.1% |
| Design Add and Search Words Data Structure | Medium | 48.2% | 54.1% |
| Alien Dictionary | Hard | 37.1% | 51.2% |
| Evaluate Division | Medium | 64.0% | 51.2% |
| Water and Jug Problem | Medium | 45.0% | 47.7% |
| Minimize Malware Spread | Hard | 43.0% | 43.7% |
| Number of Good Leaf Nodes Pairs | Medium | 71.8% | 43.7% |
| Convert Binary Search Tree to Sorted Doubly Linked List | Medium | 65.6% | 43.7% |
| Reorder Routes to Make All Paths Lead to the City Zero | Medium | 65.6% | 43.7% |
| Binary Tree Longest Consecutive Sequence | Medium | 54.6% | 43.7% |
| Course Schedule IV | Medium | 59.7% | 43.7% |
| Path Sum III | Medium | 46.3% | 38.8% |
| Cheapest Flights Within K Stops | Medium | 41.4% | 38.8% |
| Design Search Autocomplete System | Hard | 49.7% | 38.8% |
| Tree Diameter | Medium | 61.3% | 38.8% |
| Regions Cut By Slashes | Medium | 77.5% | 38.8% |
| Serialize and Deserialize N-ary Tree | Hard | 68.6% | 32.6% |
| Step-By-Step Directions From a Binary Tree Node to Another | Medium | 56.4% | 32.6% |
| Maximum Width of Binary Tree | Medium | 45.3% | 32.6% |
| Is Graph Bipartite? | Medium | 58.9% | 32.6% |
| Concatenated Words | Hard | 49.7% | 32.6% |
| House Robber III | Medium | 55.6% | 32.6% |
| Diameter of Binary Tree | Easy | 65.1% | 32.6% |
| All Nodes Distance K in Binary Tree | Medium | 67.4% | 32.6% |
| Deepest Leaves Sum | Medium | 86.5% | 32.6% |
| Path Sum II | Medium | 61.8% | 32.6% |
| Number of Connected Components in an Undirected Graph | Medium | 64.8% | 32.6% |
| Accounts Merge | Medium | 60.9% | 32.6% |
| Cousins in Binary Tree | Easy | 59.1% | 24.3% |
| Graph Valid Tree | Medium | 49.8% | 24.3% |
| The Maze II | Medium | 55.0% | 24.3% |
| Kth Smallest Element in a BST | Medium | 76.5% | 24.3% |
| Construct String from Binary Tree | Medium | 70.6% | 24.3% |
| Minesweeper | Medium | 68.7% | 24.3% |
| Symmetric Tree | Easy | 60.8% | 24.3% |
| Recover Binary Search Tree | Medium | 58.8% | 24.3% |
| Path Sum | Easy | 54.5% | 24.3% |
| Lowest Common Ancestor of a Binary Tree IV | Medium | 79.5% | 24.3% |
| Surrounded Regions | Medium | 44.8% | 24.3% |
| Unit Conversion II | Medium | | 24.3% |
