[LeetCode] Closest Leaf in a Binary Tree 二叉樹中最近的葉結點
Given a binary tree where every node has a unique value, and a target key k, find the value of the nearest leaf node to target k in the tree. ...
原文：[LeetCode] 872. Leaf-Similar Trees 葉結點相似的樹
Consider all the leaves of a binary tree. Fromleft to right order, the values of thoseleaves form a leaf value sequence. For example, in the given tree above, the leaf value sequence is , , , , . Two ...
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