LeetCode（104） Maximum Depth of Binary Tree

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LeetCode（104） Maximum Depth of Binary Tree

题目 Given a binary tree, find its maximum depth. The maximum depth is the number of nodes along the longest path from the root node down to the farthest leaf node. 分析很简单的题目,求二叉树的高度. AC代码 /** * Definition for a binary tree node. * struct TreeNode { *…

LeetCode（111） Minimum Depth of Binary Tree

题目 Given a binary tree, find its minimum depth. The minimum depth is the number of nodes along the shortest path from the root node down to the nearest leaf node. 分析求二叉树的最小深度:根节点到最近叶子节点的路径长度. 同样采用递归的思想: 当根节点为空,返回0: 当根节点为唯一的二叉树节点时,返回1: 否则,求解并返回最小(非空…

[LeetCode#104, 111]Maximum Depth of Binary Tree, Minimum Depth of Binary Tree

The problem 1: Given a binary tree, find its maximum depth. The maximum depth is the number of nodes along the longest path from the root node down to the farthest leaf node. My analysis: The recursion solution for this problem is very elegant!It inc…

[LeetCode]题解（python）：104 Maximum Depth of Binary Tree

题目来源 https://leetcode.com/problems/maximum-depth-of-binary-tree/ Given a binary tree, find its maximum depth. The maximum depth is the number of nodes along the longest path from the root node down to the farthest leaf node. 题意分析 Input: tree Output:…

LeetCode Javascript实现 258. Add Digits 104. Maximum Depth of Binary Tree 226. Invert Binary Tree

258. Add Digits Digit root 数根问题 /** * @param {number} num * @return {number} */ var addDigits = function(num) { var b = (num-1) % 9 + 1 ; return b; }; //之所以num要-1再+1;是因为特殊情况下:当num是9的倍数时,0+9的数字根和0的数字根不同. 性质说明 1.任何数加9的数字根还是它本身.(特殊情况num=0) 小学学加法的…