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Leetcode 106. 从中序与后序遍历序列构造二叉树
https://leetcode-cn.com/problems/construct-binary-tree-from-inorder-and-postorder-traversal/ 根据一棵树的中序遍历与后序遍历构造二叉树。 注意: 你可以假设树中没有重复的元素。 例如,给出 中序遍历 inor ...
分类:其他好文   时间:2021-06-02 15:25:05    阅读次数:0
从中序后序遍历构造
1.构造二叉树的必要条件 必须需要中序遍历和一个前序或者中序遍历 构造二叉树=前序+中序 =后序+中序 2.那如何根据中序和后序遍历去构造二叉树呢? 比如给出 inorder(中序)=[9,3,15,27] postorder(后序遍历)=[9,15,7,20,3] 就可以构造出一个唯一的二叉树: ...
分类:其他好文   时间:2021-04-20 14:03:16    阅读次数:0
PAT A1119 Pre- and Post-order Traversals (30 分)
Suppose that all the keys in a binary tree are distinct positive integers. A unique binary tree can be determined by a given pair of postorder and ino ...
分类:其他好文   时间:2021-02-16 12:28:45    阅读次数:0
【力扣】从中序与后序遍历序列构造二叉树
来源:力扣(LeetCode)链接:https://leetcode-cn.com/problems/construct-binary-tree-from-inorder-and-postorder-traversal 根据一棵树的中序遍历与后序遍历构造二叉树。 注意:你可以假设树中没有重复的元素。 ...
分类:其他好文   时间:2021-01-05 11:32:09    阅读次数:0
1020 Tree Traversals (25分)
题干 Suppose that all the keys in a binary tree are distinct positive integers. Given the postorder and inorder traversal sequences, you are supposed to ...
分类:其他好文   时间:2020-07-29 21:34:20    阅读次数:77
LeetCode 590 N叉树的后序遍历
题目链接:https://leetcode-cn.com/problems/n-ary-tree-postorder-traversal/ 方法一递归法:先访问子节点,然后访问根。LeetCode代码: /* // Definition for a Node. class Node { public ...
分类:其他好文   时间:2020-07-16 21:39:10    阅读次数:79
平衡二叉树实例--判断输入后序序列是否为平衡二叉树
1 bool verifyPostorder(vector<int>& postorder){ 2 if(postorder.empty()) return true; 3 bool res = helper(postorder,0,postorder.sizee()-1); 4 return re ...
分类:其他好文   时间:2020-05-30 00:58:47    阅读次数:77
N叉树的后续遍历
此博客链接:https://www.cnblogs.com/ping2yingshi/p/12945132.html N叉树的后续遍历(76min) 题目链接:https://leetcode-cn.com/problems/n-ary-tree-postorder-traversal/ 给定一个 ...
分类:其他好文   时间:2020-05-24 00:20:22    阅读次数:56
[LeetCode] 106. Construct Binary Tree from Inorder and Postorder Traversal
Given inorder and postorder traversal of a tree, construct the binary tree. Note:You may assume that duplicates do not exist in the tree. For example, ...
分类:其他好文   时间:2020-05-22 13:12:40    阅读次数:54
1127 ZigZagging on a Tree (30分)
Suppose that all the keys in a binary tree are distinct positive integers. A unique binary tree can be determined by a given pair of postorder and ino ...
分类:其他好文   时间:2020-05-06 13:56:18    阅读次数:55
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