| Number | Title(Blog URL) | Pass Rate | Degree |
|---|---|---|---|
| 107 | Binary Tree Level Order Traversal II | 39.0% | Easy |
| 257 | Binary Tree Paths | 36.8% | Easy |
| 501 | Find Mode in Binary Search Tree | 38.4% | Easy |
| 437 | Path Sum III | 39.3% | Easy |
| 404 | Sum of Left Leaves | 46.5% | Easy |
| 112 | Path Sum | 33.5% | Easy |
| 110 | Balanced Binary Tree | 36.8% | Easy |
| 108 | Convert Sorted Array to Binary Search Tree | 41.3% | Easy |
| 543 | Diameter of Binary Tree | 42.3% | Easy |
| 226 | Invert Binary Tree | 50.8% | Easy |
| 235 | Lowest Common Ancestor of a Binary Search Tree | 38.5% | Easy |
| 104 | Maximum Depth of Binary Tree | 51.7% | Easy |
| 111 | Minimum Depth of Binary Tree | 32.7% | Easy |
| 101 | Symmetric Tree | 37.9% | Easy |
| 100 | Same Tree | 45.8% | Easy |