Val != q.Val { return false } // 都是非空结点,且当前结点值相同,则需要左右子树是否相同 return isSameTree(p.Left, q.Left) && isSameTree(p.Right, q.Right) } 题目链接: Same Tree: leetcode.com/problems/s 相同的树: leetcode.cn/problems/sa LeetCode 日更第 221 天,感谢阅读至此的你...
下面是java代码: 递归的: 1/**2* Definition for a binary tree node.3* public class TreeNode {4* int val;5* TreeNode left;6* TreeNode right;7* TreeNode(int x) { val = x; }8* }9*/10publicclassSolution {11publicbooleanisSameTree(TreeNode p, TreeNode q) {12if(p ==null&& q ...
* Definition for binary tree * struct TreeNode { * int val; * TreeNode *left; * TreeNode *right; * TreeNode(int x) : val(x), left(NULL), right(NULL) {} * }; */ class Solution { public: bool isSameTree(TreeNode *p, TreeNode *q) { if(!p&&!q) return true; if(!p&&q...
Given two binary trees, write a function to check if they are equal or not. Two binary trees are considered equal if they are structurally identical and the nodes have the same value. 接着递归。。 /** * Definition for binary tree * public class TreeNode { * int val; * TreeNode left...
/*** Definition for a binary tree node.* struct TreeNode {* int val;* TreeNode *left;* TreeNode *right;* TreeNode(int x) : val(x), left(NULL), right(NULL) {}* };*/classSolution{public:boolisSameTree(TreeNode*p,TreeNode*q){stack<TreeNode*>stack;stack.push(q);stack.push(p...
Given a binary tree, check whether it is a mirror of itself (ie, symmetric around its center). For example, this binary tree is symmetric: 1 / \ 2 2 / \ / \ 3 4 4 3 1. 2. 3. 4. 5. But the following is not: 1
题目Same Tree Given two binary trees, write a function to check if they are equal or not. Two binary trees are considered equal if they are structurally identical and the nodes have the same value. 分析 判断两个二叉树是否相等,只要每个都遍历(前,中,后,层次)一下进行对比即可. 笼统的我们也...
Initially, all next pointers are set toNULL. Note: You may only use constant extra space.You may assume that it is a perfect binary tree (ie, all leaves are at the same level, and every parent has two children). root 纵向扫描, cur 横向扫描。
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Given two binary trees, write a function to check if they are the same or not. Two binary trees are considered the same if they are structurally identical and the nodes have the same value. 翻译过来就是,给定两个二叉树,判断这两个树是否相同。 Example 1: 代码语言:javascript 复制 Input: 1...