[LeetCode]Same Tree
来源:互联网 发布:产品网络宣传图制作 编辑:程序博客网 时间:2024/04/27 17:25
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.
来源:http://oj.leetcode.com/problems/same-tree/
思路:
判断树一个树节点是否相等三个条件: 是否有左节点, 是否有右节点, 值是否相等.
对两棵树同时进行深度遍历,每个结点都进行比较,当前两个结点值相同时,继续往下遍历,否则停止返回
C++ AC代码:
/** * 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==NULL && q==NULL ) return true; else if ( p==NULL || q==NULL ) return false; else if (p->val==q->val){if(isSameTree(p->left,q->left) && isSameTree(p->right,q->right) )return true; else return false; } else return false; }};
运行时间:4ms
测试代码:待续。。。
0 0
- Leetcode - Tree - Same Tree
- [leetcode][tree] Same Tree
- LeetCode: Same Tree
- LeetCode Same Tree
- [Leetcode] Same Tree
- LeetCode : Same Tree
- [LeetCode] Same Tree
- leetcode 65: Same Tree
- Leetcode 100 Same Tree
- [leetcode] Same Tree
- [LeetCode]Same Tree
- [leetcode]Same Tree
- [Leetcode]Same Tree
- Leetcode: Same Tree
- [LeetCode] Same Tree
- LeetCode-Same Tree
- [leetcode] Same Tree
- LeetCode - Same Tree
- 4.数组和指针
- 图像分类中混淆矩阵精度验证法中的几个指标说明
- C# 创建ini文件
- varchar和char
- Ubuntu10.04下Linux内核编译的完整步骤
- [LeetCode]Same Tree
- HDU 1.3.3第二小整数
- FPGA跨时钟域的处理方法
- WinMain和main
- 2.1: 判断一个正整数是否为质数的算法。
- 按钮(Button)组件的功能和用法
- C# 如何消除字符串数组的重复项的函数
- UVA11374机场快线题目学习
- csdn的博客终于开通了。