LeetCode preorder-阿里云

LeetCode 331. Verify Preorder Serialization of a T

DescriptionOne way to serialize a binary tree is to use pre-order traversal. When we encounter a non-null node, we record the node's value. If it is a...

【LeetCode】Verify Preorder Serialization of a Binary Tree（331）

1. Description　　One way to serialize a binary tree is to use pre-order traversal. When we encounter a non-null node, we record the node's value. If it...

[LeetCode] Construct Binary Tree from Preorder and Inorder Traversal

链接：https://leetcode.com/problems/construct-binary-tree-from-preorder-and-inorder-traversal/description/难度：Medium题目：105. Construct Binary Tree from Pre...

[LeetCode] Verify Preorder Serialization of a Binary Tree 验证二叉树的先序序列化

One way to serialize a binary tree is to use pre-oder traversal. When we encounter a non-null node, we record the node's value. If it is a null node, ...

[LeetCode] Verify Preorder Sequence in Binary Search Tree 验证二叉搜索树的先序序列

Given an array of numbers, verify whether it is the correct preorder traversal sequence of a binary search tree. You may assume each number in the seq...

[LeetCode] Binary Tree Preorder Traversal 二叉树的先序遍历

Given a binary tree, return the preorder traversal of its nodes' values. For example: Given binary tree {1,#,2,3}, 1 \ 2 / 3 return&nbs...

[LeetCode] Construct Binary Tree from Preorder and Inorder Traversal 由先序和中序遍历建立二叉树

Given preorder and inorder traversal of a tree, construct the binary tree. Note: You may assume that duplicates do not exist in the tree. 这道题要求用先序和中序遍...