| Binary Tree Vertical Order Traversal | Medium | 57.8% | 93.4% |
| Binary Tree Right Side View | Medium | 69.5% | 86.0% |
| Lowest Common Ancestor of a Binary Tree | Medium | 68.8% | 82.9% |
| Nested List Weight Sum | Medium | 85.9% | 81.7% |
| Sum Root to Leaf Numbers | Medium | 69.6% | 80.5% |
| Diameter of Binary Tree | Easy | 65.1% | 79.2% |
| Clone Graph | Medium | 64.7% | 71.4% |
| Range Sum of BST | Easy | 87.6% | 69.5% |
| Making A Large Island | Hard | 56.3% | 65.0% |
| Accounts Merge | Medium | 60.9% | 62.4% |
| Word Search | Medium | 46.9% | 48.3% |
| Closest Binary Search Tree Value | Easy | 49.3% | 47.0% |
| Vertical Order Traversal of a Binary Tree | Hard | 53.3% | 47.0% |
| Course Schedule | Medium | 50.8% | 47.0% |
| All Nodes Distance K in Binary Tree | Medium | 67.4% | 47.0% |
| Convert Binary Search Tree to Sorted Doubly Linked List | Medium | 65.6% | 47.0% |
| Number of Islands | Medium | 63.8% | 43.1% |
| Validate Binary Search Tree | Medium | 35.4% | 41.0% |
| Swim in Rising Water | Hard | 67.6% | 40.7% |
| Binary Tree Maximum Path Sum | Hard | 42.0% | 40.7% |
| Populating Next Right Pointers in Each Node | Medium | 66.9% | 39.6% |
| Lowest Common Ancestor of a Binary Search Tree | Medium | 70.1% | 38.3% |
| Alien Dictionary | Hard | 37.1% | 35.4% |
| Minimum Depth of Binary Tree | Easy | 52.4% | 34.5% |
| Binary Tree Inorder Traversal | Easy | 79.7% | 34.5% |
| Shortest Path in a Hidden Grid | Medium | 44.5% | 32.0% |
| Kth Smallest Element in a BST | Medium | 76.5% | 32.0% |
| Maximum Depth of Binary Tree | Easy | 77.9% | 31.6% |
| Symmetric Tree | Easy | 60.8% | 30.6% |
| Course Schedule II | Medium | 55.0% | 29.9% |
| Same Tree | Easy | 66.7% | 25.5% |
| Path Sum | Easy | 54.5% | 24.9% |
| Balanced Binary Tree | Easy | 57.9% | 22.3% |
| Path Sum II | Medium | 61.8% | 20.3% |
| Flatten Binary Tree to Linked List | Medium | 70.2% | 15.8% |
