| 94.二叉树的中序遍历open in new window | 简单 |
| 101.对称二叉树open in new window | 简单 |
| 104.二叉树的最大深度open in new window | 简单 |
| 108.将有序数组转换为二叉搜索树open in new window | 简单 |
| 226.翻转二叉树open in new window | 简单 |
| 543.二叉树的直径open in new window | 简单 |
| 98.验证二叉搜索树open in new window | 中等 |
| 102.二叉树的层序遍历open in new window | 中等 |
| 105.从前序与中序遍历序列构造二叉树open in new window | 中等 |
| 114.二叉树展开为链表open in new window | 中等 |
| 199.二叉树的右视图open in new window | 中等 |
| 230.二叉搜索树中第K小的元素open in new window | 中等 |
| 236.二叉树的最近公共祖先open in new window | 中等 |
| 437.路径总和 IIIopen in new window | 中等 |
| 124.二叉树中的最大路径和open in new window | 困难 |