【练习】用「遍历」思维解题 III

437. 路径总和 III https://leetcode.cn/problems/path-sum-iii

513. 找树左下角的值 https://leetcode.cn/problems/find-bottom-left-tree-value

1261. 在受污染的二叉树中查找元素 https://leetcode.cn/problems/find-elements-in-a-contaminated-binary-tree

386. 字典序排数 https://leetcode.cn/problems/lexicographical-numbers

1104. 二叉树寻路 https://leetcode.cn/problems/path-in-zigzag-labelled-binary-tree

1145. 二叉树着色游戏 https://leetcode.cn/problems/binary-tree-coloring-game

2096. 从二叉树一个节点到另一个节点每一步的方向 https://leetcode.cn/problems/step-by-step-directions-from-a-binary-tree-node-to-another

572. 另一棵树的子树 https://leetcode.cn/problems/subtree-of-another-tree

1367. 二叉树中的列表 https://leetcode.cn/problems/linked-list-in-binary-tree