题目: 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 But the following is not: 1 / \ 2 2 \ \ 3 3 Note:Bonus points if you could solve…
题目: 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. 代码: /** * Definition for a binary tree node. * struct TreeNode…
Description 给定一棵以1为根的有根树,初始所有节点颜色为1,每次将距离节点a不超过l的a的子节点染成c,或询问点a的颜色 区间修改单点查询kdtree #include<iostream> #include<cstdio> #include<cstring> #include<algorithm> #include<ctime> #include<cstdlib> #define LL long long using na…
Tree Time Limit: 1000MS Memory Limit: 30000K Total Submissions: 11570 Accepted: 3626 Description Give a tree with n vertices,each edge has a length(positive integer less than 1001). Define dist(u,v)=The min distance between node u and v. Give a…