C# 最原始的tree 递归使用

; i < dr.Rows.Count; i++) { ) { n.id = Convert.ToInt32(dr.Rows[i][; i < dr.Rows.Count; i++) { tree n = ; BindNew(model);]; return…

LeetCode OJ Minimum Depth of Binary Tree 递归求解

题目URL:https://leetcode.com/problems/minimum-depth-of-binary-tree/ 111. Minimum Depth of Binary Tree My Submissions Question Total Accepted: 94580 Total Submissions: 312802 Difficulty: Easy Given a binary tree, find its minimum depth. The minimum…

leetcode 226. Invert Binary Tree(递归)

Invert a binary tree. 4 / \ 2 7 / \ / \ 1 3 6 9 to 4 / \ 7 2 / \ / \ 9 6 3 1 Trivia:This problem was inspired by this original tweet by Max Howell: Google: 90% of our engineers use the software you wrote (Homebrew), but you can’t invert a binary tree…

leetcode-101. 判断对称树 · Tree + 递归

题面判断给定二叉树是否对称. Note : empty tree is valid. 算法 1. 根节点判空,若空,则返回true;(空树对称) 2. 根节点不空,递归判断左右子树.如果左右孩子都空,说明到了叶子,返回true;不都空而且一空一不空,返回false:都不空,且值不等,返回false,值相等,递归(左的左, 右的右) && (左的右, 右的左) 源码 /** * Definition for a binary tree node. * struct TreeNode { *…

LeetCode (226):Invert Binary Tree 递归实现

Invert a binary tree. 4 / \ 2 7 / \ / \ 1 3 6 9 to 4 / \ 7 2 / \ / \ 9 6 3 1 Trivia:This problem was inspired by this original tweet by Max Howell: Google: 90% of our engineers use the software you wrote (Homebrew), but you can’t invert a binary tree…

EasyUI Tree递归方式获取JSON

最近需要用到EASYUI中的TREE功能,以前我是直接拼接成<UL><LI>发现这样拼完之后在更改树后对树的刷新不是很理想,现改用JSON格式,首先分析TREE中JOSN格式如下: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 [{ "id":1, "text":"流程分类", &qu…

leetcode-111. 二叉树最小深度 · Tree + 递归

题面找出二叉树的最小深度(从根节点到某个叶子节点路径上的节点个数最小). 算法算法参照二叉树的最大深度,这里需要注意的是当某节点的左右孩子都存在时,就返回左右子树的最小深度:如果不都存在,就需要返回左右子树的最大深度(因为子节点不存在的话,通向该子树的路径就走不同,就不存在深度,也无法比较.只能从另一子树方向走.)如果左右孩子不都存在时还取小值,那返回的就是父节点的深度,会出错. 源码 class Solution { public: int minDepth(TreeNode* root…

如何采用easyui tree编写简单角色权限代码

首先每个管理员得对应一个角色: 而角色可以操作多个栏目,这种情况下我们可以采用tree多选的方式: 在页面上js代码: $('#Permission').dialog({ title: '栏目权限', closed: false }); $('#rtt').tree({ url: 'ashx/RoleService.ashx?action=RoleTree&Rid=' + raw.ID, method: 'get', animate: true, checkbox: true }); $('#R…

Leetcode | Construct Binary Tree from Inorder and (Preorder or Postorder) Traversal

Construct Binary Tree from Preorder and Inorder Traversal Given preorder and inorder traversal of a tree, construct the binary tree. Note:You may assume that duplicates do not exist in the tree. 递归构建. 思路就是: preorder可以定位到根结点,inorder可以定位左右子树的取值范围. 1. 由…

PHP无限级分类实现（递归+非递归）

<?php /** * Created by PhpStorm. * User: qishou * Date: 15-8-2 * Time: 上午12:00 */ //准备数组,代替从数据库中检索出的数据(共有三个必须字段id,name,pid) header("content-type:text/html;charset=utf-8"); $categories = array( array('id'=>1,'name'=>'电脑','pid'=>0), ar…

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