题目 The following is from Max Howell @twitter: Google: 90% of our engineers use the sofware you wrote (Homebrew), but you can't invert a binary tree on a whiteboard so fuck of. Now it's your turn to prove that YOU CAN invert a binary tree! Input Speci…

题意: 输入一个正整数N(<=10),接着输入0~N-1每个结点的左右儿子结点,输出这颗二叉树的反转的层次遍历和中序遍历. AAAAAccepted code: #define HAVE_STRUCT_TIMESPEC #include<bits/stdc++.h> using namespace std; ][]; ]; void bfs(int r){ queue<int>q; q.push(r); cout<<r; while(!q.empty()){ in…

The following is from Max Howell @twitter: Google: 90% of our engineers use the software you wrote (Homebrew), but you can't invert a binary tree on a whiteboard so fuck off. Now it's your turn to prove that YOU CAN invert a binary tree! Input Specif…

简单题. #include<cstdio> #include<cstring> #include<cmath> #include<vector> #include<map> #include<queue> #include<stack> #include<algorithm> using namespace std; struct Node { int left; int right; }s[]; int n;…

就是把输入给的左孩子右孩子互换一下,然后输出层次遍历和中序遍历. #include <iostream> #include <algorithm> #include <cstring> #include <string.h> #include <cstdio> #include <queue> using namespace std; ; bool first=true; struct Node{ int id; int left;…

本文同步发布在CSDN:https://blog.csdn.net/weixin_44385565/article/details/90577042 1102 Invert a Binary Tree (25 分)   The following is from Max Howell @twitter: Google: 90% of our engineers use the software you wrote (Homebrew), but you can't invert a binary…

1102 Invert a Binary Tree(25 分) The following is from Max Howell @twitter: Google: 90% of our engineers use the software you wrote (Homebrew), but you can't invert a binary tree on a whiteboard so fuck off. Now it's your turn to prove that YOU CAN in…

1102 Invert a Binary Tree The following is from Max Howell @twitter: Google: 90% of our engineers use the software you wrote (Homebrew), but you can't invert a binary tree on a whiteboard so fuck off. Now it's your turn to prove that YOU CAN invert a…

The following is from Max Howell @twitter: Google: 90% of our engineers use the software you wrote (Homebrew), but you can't invert a binary tree on a whiteboard so fuck off. Now it's your turn to prove that YOU CAN invert a binary tree! Input Specif…

Given a tree, you are supposed to tell if it is a complete binary tree. Input Specification: Each input file contains one test case. For each case, the first line gives a positive integer N (≤) which is the total number of nodes in the tree -- and he…

传送门 Description A binary tree is a finite set of vertices that is either empty or consists of a root r and two disjoint binary trees called the left and right subtrees. There are three most important ways in which the vertices of a binary tree can be…

Binary Tree Traversals Time Limit: 1000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 2442    Accepted Submission(s): 1063 Problem Description A binary tree is a finite set of vertices that is either empty or…

二叉树有N个结点,给出每个结点的左右孩子结点的编号,把二叉树反转(左右孩子交换  所以是后序遍历交换) 输出反转后二叉树的层序遍历和中序遍历 #include<bits/stdc++.h> using namespace std; ; struct node { int L,R; }s[N]; int toint(char ch) { if(ch=='-'){ ; } else{ '; } } int isroot[N]; void postorder(int root) { ){ retur…

题意:给定一个二叉树,要求输出翻转后的二叉树的层序序列和中序序列. 思路:不用真的翻转,只需要在输出时先访问右结点再访问左结点即可. 代码: #include <cstdio> #include <cstdlib> #include <cstring> #include <queue> using namespace std; struct Node{ int left,right; }tree[]; ]={}; int n; void levelOrder…

题意: 输入一个正整数N(<=20),代表结点个数(0~N-1),接着输入N行每行包括每个结点的左右子结点,'-'表示无该子结点,输出是否是一颗完全二叉树,是的话输出最后一个子结点否则输出根节点. trick: 用char输入子结点没有考虑两位数的结点…

1102. Invert a Binary Tree (25) 时间限制 400 ms 内存限制 65536 kB 代码长度限制 16000 B 判题程序 Standard 作者 CHEN, Yue The following is from Max Howell @twitter: Google: 90% of our engineers use the software you wrote (Homebrew), but you can't invert a binary tree on a…

Source: PAT A1102 Invert a Binary Tree (25 分) Description: The following is from Max Howell @twitter: Google: 90% of our engineers use the software you wrote (Homebrew), but you can't invert a binary tree on a whiteboard so fuck off. Now it's your tu…

The following is from Max Howell @twitter: Google: 90% of our engineers use the software you wrote (Homebrew), but you can't invert a binary tree on a whiteboard so fuck off. Now it's your turn to prove that YOU CAN invert a binary tree! Input Specif…

1043 Is It a Binary Search Tree (25 分)   A Binary Search Tree (BST) is recursively defined as a binary tree which has the following properties: The left subtree of a node contains only nodes with keys less than the node's key. The right subtree of a…

Invert a binary tree 翻转一棵二叉树 假设有如下一棵二叉树: 4  / \   2    7  / \   / \ 1  3 6  9翻转后: 4     /    \    7     2   / \    / \  9  6  3  1 这里采用递归的方法来处理.遍历结点,将每个结点的两个子结点交换位置即可. 从左子树开始,层层深入,由底向上处理结点的左右子结点:然后再处理右子树 全部代码如下: public class InvertBinaryTree { public…

Invert a binary tree. 4 / \ 2 7 / \ / \ 1 3 6 9 to 4 / \ 7 2 / \ / \ 9 6 3 1 Trivia:This problem was inspired by this original tweet by Max Howell: Google: 90% of our engineers use the software you wrote (Homebrew), but you can’t invert a binary tree…

Invert a binary tree. 4 / \ 2 7 / \ / \ 1 3 6 9 to 4 / \ 7 2 / \ / \ 9 6 3 1 Trivia:This problem was inspired by this original tweet by Max Howell: Google: 90% of our engineers use the software you wrote (Homebrew), but you can’t invert a binary tree…

1110. Complete Binary Tree (25) Given a tree, you are supposed to tell if it is a complete binary tree. Input Specification: Each input file contains one test case. For each case, the first line gives a positive integer N (<=20) which is the total nu…

Invert a Binary Tree pat-1102 import java.util.Arrays; import java.util.Queue; import java.util.Scanner; import java.util.concurrent.LinkedBlockingQueue; /** * @Author WaleGarrett * @Date 2020/9/5 20:04 */ public class PAT_1102 { static InvertTree[]…

The following is from Max Howell @twitter: Google: 90% of our engineers use the software you wrote (Homebrew), but you can't invert a binary tree on a whiteboard so fuck off. Now it's your turn to prove that YOU CAN invert a binary tree! Input Specif…

题目地址 https://pta.patest.cn/pta/test/16/exam/4/question/668 5-6 Root of AVL Tree   (25分) An AVL tree is a self-balancing binary search tree. In an AVL tree, the heights of the two child subtrees of any node differ by at most one; if at any time they d…

1066 Root of AVL Tree (25 分)   An AVL tree is a self-balancing binary search tree. In an AVL tree, the heights of the two child subtrees of any node differ by at most one; if at any time they differ by more than one, rebalancing is done to restore th…

The following is from Max Howell @twitter: Google: 90% of our engineers use the software you wrote (Homebrew), but you can't invert a binary tree on a whiteboard so fuck off. Now it's your turn to prove that YOU CAN invert a binary tree! Input Specif…

PAT甲级:1066 Root of AVL Tree (25分) 题干 An AVL tree is a self-balancing binary search tree. In an AVL tree, the heights of the two child subtrees of any node differ by at most one; if at any time they differ by more than one, rebalancing is done to rest…

Given a binary tree, return the preorder traversal of its nodes' values. For example:Given binary tree {1,#,2,3}, 1 \ 2 / 3 return [1,2,3]. Note: Recursive solution is trivial, could you do it iteratively? 树的遍历,最常见的有先序遍历,中序遍历,后序遍历和层序遍历,它们用递归实现起来都非常的简…