//题目 通过后续遍历 中序遍历 得出一棵树 ,然后按树的层次遍历打印 PS:以前对于这种用指针的题目是比较头痛的,现在做了一些链表操作后,感觉也不难 先通过后续中序建一棵树,然后通过BFS遍历这棵树 提供测试样例 44 1 3 22 3 1 41010 7 6 9 8 5 4 1 3 27 10 6 2 5 9 8 3 1 4 //题目 通过后续遍历 中序遍历 得出一棵树 ,然后按树的层次遍历打印 #include<stdio.h> #include<iostream> #inc…

题目 Suppose that all the keys in a binary tree are distinct positive integers. Given the postorder and inorder traversal sequences, you are supposed to output the level order traversal sequence of the corresponding binary tree. Input Specification: Ea…

1020 Tree Traversals (25 分)   Suppose that all the keys in a binary tree are distinct positive integers. Given the postorder and inorder traversal sequences, you are supposed to output the level order traversal sequence of the corresponding binary tr…

1020 Tree Traversals (25)(25 分) Suppose that all the keys in a binary tree are distinct positive integers. Given the postorder and inorder traversal sequences, you are supposed to output the level order traversal sequence of the corresponding binary…

1020 Tree Traversals (25分)   Suppose that all the keys in a binary tree are distinct positive integers. Given the postorder and inorder traversal sequences, you are supposed to output the level order traversal sequence of the corresponding binary tre…

1020 Tree Traversals (25 分)   Suppose that all the keys in a binary tree are distinct positive integers. Given the postorder and inorder traversal sequences, you are supposed to output the level order traversal sequence of the corresponding binary tr…

题意: 输入一个正整数N(N<=30),给出一棵二叉树的后序遍历和中序遍历,输出它的层次遍历. trick: 当30个点构成一条单链时,如代码开头处的数据,大约1e9左右的结点编号大小,故采用结构体储存结点的序号(1~N),编号(代表它在完全二叉树上的位置)和值.PTA网站上可以用大小为31的数组存放结点,可能数据为一颗比较平衡的二叉树. AAAAAccepted code: /*301 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22…

the problem is from pat,which website is http://pat.zju.edu.cn/contests/pat-a-practise/1020 and the source code is as followed. #include<iostream> #include<cstdlib> #include<queue> using namespace std; ; typedef struct Tree { Tree *le; T…

Suppose that all the keys in a binary tree are distinct positive integers. Given the postorder and inorder traversal sequences, you are supposed to output the level order traversal sequence of the corresponding binary tree. Input Specification: Each…

题目如下: Suppose that all the keys in a binary tree are distinct positive integers. Given the postorder and inorder traversal sequences, you are supposed to output the level order traversal sequence of the corresponding binary tree. Input Specification:…