| Count Good Nodes in Binary Tree | Medium | 73.8% | 72.0% |
| Reverse Odd Levels of Binary Tree | Medium | 86.7% | 72.0% |
| Delete Leaves With a Given Value | Medium | 77.3% | 72.0% |
| Find Bottom Left Tree Value | Medium | 72.2% | 72.0% |
| Invert Binary Tree | Easy | 79.8% | 65.2% |
| Maximum Difference Between Node and Ancestor | Medium | 78.1% | 65.2% |
| Sum of Nodes with Even-Valued Grandparent | Medium | 85.9% | 65.2% |
| Merge Two Binary Trees | Easy | 79.0% | 65.2% |
| Flatten Binary Tree to Linked List | Medium | 70.2% | 55.6% |
| Find Largest Value in Each Tree Row | Medium | 66.3% | 55.6% |
| Island Perimeter | Easy | 74.3% | 55.6% |
