1、minimum depth of binary tree 1/**2* Definition for binary tree3* struct TreeNode {4* int val;5* TreeNode *left;6* TreeNode *right;7* TreeNode(int x) : val(x), left(NULL), right(NULL) {}8* };9*/10classSolution {11public:12intminDepth(TreeNode *root) {13if(root ==NU...
* Definition for a binary tree node. * struct TreeNode { * int val; * TreeNode *left; * TreeNode *right; * TreeNode(int x) : val(x), left(NULL), right(NULL) {} * }; *///复杂版:classSolution{public:intmaxDepth(TreeNode* root){if(root==NULL)return0;intleftDepth=0;if(roo...
LeetCode 111 题,Minimum Depth of Binary Tree 解题思路 1、读题,求解二叉树的最小Depth。 2、用bfs 去解决,队列带上每层的层数。当有一个节点的左右子树都为空时,返回当前层数,就找到解。 Python 代码 # De…
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. 思路: 注意递归传值的方式差异。 算法1: AI检测代码解析 int min = Integer.MAX_VALUE; //此处有bug 不过ac还是没问题的 public int...
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. Note: A leaf is a node with no children. Example: Given binary tree [3,9,20,null,null,15,7], ...
My code: /** * Definition for a binary tree node. * public class TreeNode { * int val; * TreeNode left; * TreeNode right; * TreeNode(int x) { val = x; } * } */publicclassSolution{public intmaxDepth(TreeNode root){returngetDepth(root);}private intgetDepth(TreeNode root){if...
https://leetcode.com/problems/maximum-depth-of-n-ary-tree/ 简化版:https://leetcode.com/problems/maximum-depth-of-binary-tree/ 此后约定:存进Queue 或者Stack的对象一定不能是null。 非递归方法:实际上是BFS按层级遍历; 递归方法: 2.1 套用分层遍历:保留每一层的最大深度,而不是每个数量; ...
LeetCode: Maximum Depth of Binary Tree 题目如下: 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. 即求二叉树的(最大)深度。
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. 【代码】 【递归】 时间复杂度为O(n) 空间复杂度为O(logn) /** * Definition for binary tree ...
Can you solve this real interview question? Minimum Depth of Binary Tree - 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. Note: A leaf is a