Is It a Binary Search Tree PAT-1043 主要涉及到根据前序遍历序列片段是否是一颗二叉树,这里有一个小tip就是插入序列就是二叉树的前序遍历序列。 第二个是会对排序二叉树进行前序遍历,后序遍历,镜像排序二叉树的前序遍历,后序遍历等操作。 题目的整体难度不大,但是对
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 node contains only nodes with keys greater than or equal to the node's key...
#include<map> #include<vector> #include<queue> usingnamespacestd; //镜像树的先序遍历只需在原树先序遍历时交换左右子树的访问顺序 structnode{ intdata;//数据域 node*left,*right;//指针域 }; voidinsert(node*&root,intdata){//注意地址的地址 if(root==NULL){//到达空结点时,即为需要插入的位置...
给定1个整数键值序列,问这个序列是不是这个二叉搜索树的先序或者是这个二叉树镜像树的先序 实现分析: 假设是二叉搜索树,开始isMirror为FALSE,根据二叉搜索树的性质将已知的前序转换为后序 转换过程中,如果发现最后输出后序数组长度不为n,那就设isMirror为true,然后清空后序数 组,重新再转换1次(根据镜面二叉搜...
[PAT]1043 Is It a Binary Search Tree (25 分) 一、题意 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......
简介:【1043】Is It a Binary Search Tree (25 分)【1043】Is It a Binary Search Tree (25 分) #include<iostream>#include<stdio.h>#include<stdlib.h>#include<math.h>#include<string.h>#include<algorithm>#include<map>#include<vector>#include<queue>using namespace std;//镜像树的先序遍历只需...
PAT_A_1043 Is It a Binary Search Tree 题意:给定一串键值,判断该序列是否是一颗二叉搜索树的先序遍历或者是镜像的先序遍历,若是打印该该数的后序遍历, 思路:不用重构二叉树,直接根据二叉搜索树的性质完成,先判断是否是原树的先序遍历,若是直接打印结果然后在判断是否是其镜像树的先序遍历,最后打印结果。
Implement an iterator over a binary search tree (BST). Your iterator will be initialized with the root node of a BST. 实现一个适用于二叉查找树的迭代器,该迭代器通过二叉查找树的根结点来实例化。 Calling next() will return the next sm... ...
【1043】Is It a Binary Search Tree (25 分) 【摘要】 #include<iostream>#include<stdio.h>#include<stdlib.h>#include<math.h>#include<string.h>#include<algorithm> #include<map>#inclu... #include<iostream>#include<stdio.h>#include<stdlib.h>#include<math.h>#include<string.h>#include<...
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