https://leetcode.com/problems/flip-equivalent-binary-trees/ 判断两棵二叉树是否等价:若两棵二叉树可以通过任意次的交换任意节点的左右子树变为相同,则称两棵二叉树等价. 思路:遍历二叉树,判断所有的子树是否等价. struct TreeNode { int val; TreeNode *left; TreeNode *right; TreeNode(int x) : val(x), left(NULL), right(NULL) {} };…

For a binary tree T, we can define a flip operation as follows: choose any node, and swap the left and right child subtrees. A binary tree X is flip equivalent to a binary tree Y if and only if we can make X equal to Y after some number of flip opera…

For a binary tree T, we can define a flip operation as follows: choose any node, and swap the left and right child subtrees. A binary tree X is flip equivalent to a binary tree Y if and only if we can make X equal to Y after some number of flip opera…

题目如下: For a binary tree T, we can define a flip operation as follows: choose any node, and swap the left and right child subtrees. A binary tree X is flip equivalent to a binary tree Y if and only if we can make X equal to Y after some number of flip…

作者: 负雪明烛 id: fuxuemingzhu 个人博客: http://fuxuemingzhu.cn/ 目录 题目描述 题目大意 解题方法 递归 日期 题目地址:https://leetcode.com/problems/flip-equivalent-binary-trees/description/ 题目描述 For a binary tree T, we can define a flip operation as follows: choose any node, and swa…

https://leetcode.com/problems/flip-equivalent-binary-trees/ For a binary tree T, we can define a flip operation as follows: choose any node, and swap the left and right child subtrees. A binary tree X is flip equivalent to a binary tree Y if and only…

我们可以为二叉树 T 定义一个翻转操作,如下所示:选择任意节点,然后交换它的左子树和右子树. 只要经过一定次数的翻转操作后,能使 X 等于 Y,我们就称二叉树 X 翻转等价于二叉树 Y. 编写一个判断两个二叉树是否是翻转等价的函数.这些树由根节点 root1 和 root2 给出. 示例: 输入:root1 = [1,2,3,4,5,6,null,null,null,7,8], root2 = [1,3,2,null,6,4,5,null,null,null,null,8,7] 输出:true…

[二叉树遍历模版]前序遍历     1.递归实现 test.cpp: 123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960   #include <iostream>#include <cstdio>#include <stack>#include <vector>#include &quo…

poj2255 二叉树遍历 Time Limit:3000MS     Memory Limit:0KB     64bit IO Format:%lld & %llu   Description Little Valentine liked playing with binary trees very much. Her favorite game was constructing randomly looking binary trees with capital letters in th…

二叉树遍历问题 Description   Tree Recovery Little Valentine liked playing with binary trees very much. Her favorite game was constructing randomly looking binary trees with capital letters in the nodes. This is an example of one of her creations: D / \ / \…