Source: PAT A1086 Tree Traversals Again (25 分) Description: An inorder binary tree traversal can be implemented in a non-recursive way with a stack. For example, suppose that when a 6-node binary tree (with the keys numbered from 1 to 6) is traversed…

Tree Traversals 原题链接 常见的二叉树遍历的题目,根据后序遍历和中序遍历求层次遍历. 通过后序遍历和中序遍历建立起一棵二叉树,然后层序遍历一下,主要难点在于树的建立,通过中序遍历和后序遍历的特点递归求解,详细内容见代码 #include <iostream> #include <queue> using namespace std; struct TreeNode{ int val; TreeNode* left; TreeNode* right; }; ]; ];…

Binary Tree Traversals Time Limit: 1000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 4330    Accepted Submission(s): 1970 Problem Description A binary tree is a finite set of vertices that is either empty or…

Binary Tree Traversals Time Limit: 1000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 3475    Accepted Submission(s): 1555 Problem Description A binary tree is a finite set of vertices that is either empty or…

HDU1710Binary Tree Traversals 题目大意:给一个树的前序遍历和中序遍历,要求输出后序遍历. (半年前做这道题做了两天没看懂,今天学了二叉树,回来AC了^ ^) 首先介绍一下二叉树.二叉,即每个节点最多连向下连两个结点,也就是最多两个孩子. 如题目描述,二叉树就长这样~ 如①②③结点中①是根节点,②是左儿子③是右儿子,其余类似. 前序遍历就是先根节点,然后左儿子,右儿子 中序遍历就是先左儿子,然后根节点,右儿子 后序遍历就是先左儿子,然后右儿子,最后根节点 也就是说前中…

http://acm.hdu.edu.cn/showproblem.php?pid=1710 已知先序和中序遍历,求后序遍历二叉树. 思路:先递归建树的过程,后后序遍历. Binary Tree Traversals Time Limit: 1000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 3442    Accepted Submission(s): 1541…

03-树2. Tree Traversals Again (25) 时间限制 200 ms 内存限制 65536 kB 代码长度限制 8000 B 判题程序 Standard 作者 CHEN, Yue An inorder binary tree traversal can be implemented in a non-recursive way with a stack. For example, suppose that when a 6-node binary tree (with th…

Binary Tree Traversals Time Limit: 1000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 3340    Accepted Submission(s): 1500 Problem Description A binary tree is a finite set of vertices that is either empty or…

1086. Tree Traversals Again (25) 时间限制 200 ms 内存限制 65536 kB 代码长度限制 16000 B 判题程序 Standard 作者 CHEN, Yue An inorder binary tree traversal can be implemented in a non-recursive way with a stack. For example, suppose that when a 6-node binary tree (with th…

Binary Tree Traversals Time Limit: 1000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 2681    Accepted Submission(s): 1178 Problem Description A binary tree is a finite set of vertices that is either empty or…