The minimum depth is the number of nodes along the shortest path from the root node down to the nearest leaf node. Have you been asked this question in an interview? /** * Definition for binary tree * public cl
与Minimum Depth of Binary Tree对照看 解法一:递归,子树高度+1。 /** * Definition for binary tree * struct TreeNode { * int val; * TreeNode *left; * TreeNode *right; * TreeNode(int x) : val(x), left(NULL), right(NULL) {} * };*/classSolution {public:intmaxDepth(TreeNode *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…
236. 二叉树的最近公共祖先链接: https://leetcode-cn.com/problems/lowest-common-ancestor-of-a-binary-tree/给定一个二叉树, 找到该树中两个指定节点的最近公共祖先。 百度百科中最近公… 代码随想录发表于数据结构与... leetCode. 二叉树专题(2) 运用递归解决树的问题递归是解决树的相关问题最有效和最常用...
* TreeNode *left; * TreeNode *right; * TreeNode(int x) : val(x), left(NULL), right(NULL) {} * }; */ class Solution { public: int minDepth(TreeNode *root) { if(root==NULL) return 0; int mleft=minDepth(root->left); ...
leetcode 543. Diameter of Binary Tree 最长树的片段 + 深度优先遍历DFS,Givenabinarytree,youneedtocomputeenanytwonodesinatree.Thispathmayormayn...
Given a binary tree, find the lowest common ancestor (LCA) of two given nodes in the tree. According to the definition of LCA on Wikipedia:“The lowest common ancestor is defined between two nodes p and q as the lowest node in T that has both p and q as descendants (where we allow...
Can you solve this real interview question? Lowest Common Ancestor of a Binary Tree - Given a binary tree, find the lowest common ancestor (LCA) of two given nodes in the tree. According to the definition of LCA on Wikipedia [https://en.wikipedia.org/wi
Example 1 Given binary tree[3,9,20,null,null,15,7],3/\920/\157returnits depth=3. 解法1-递归 varmaxDepth=function(root){if(!root)return0return1+Math.max(maxDepth(root.left),maxDepth(root.right))}; 解法2-BST functionmaxDepth(root){if(!root)return0;letqueue=[root]letdepth=0// ...
今天介绍的是LeetCode算法题中Easy级别的第124题(顺位题号是543)。给定二叉树,您需要计算树的直径长度。 二叉树的直径是树中任意两个节点之间最长路径的长度。 此路径可能会也可能不会通过根节点。例: 给出一棵二叉树 1 / \ 2 3 / \ 4 5 返回3,这是路径[4,2,1,3]或[5,2,1,3]的长度。 注意:...