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leetCode 78.Subsets (子集) 解题思路和方法
Given a set of distinct integers, nums, return all possible subsets. Note: Elements in a subset must be in non-descending order.The solution set must not contain duplicate subsets. For ...
分类:其他好文   时间:2015-07-22 14:44:37    阅读次数:146
几条常见的数据库分页 SQL 语句
SQL Server先从想要的数据处理加上Row_number()来为数据的row加上一个RowNum作为有多少条数据,然后再用BETWEEN来分隔 with t1 as (select * , Row_number() OVER (ORDER BY userId DESC) AS RowNum.....
分类:数据库   时间:2015-07-22 01:27:42    阅读次数:204
[leedcode 108] Convert Sorted Array to Binary Search Tree
Given an array where elements are sorted in ascending order, convert it to a height balanced BST./** * Definition for a binary tree node. * public cla...
分类:其他好文   时间:2015-07-21 23:53:37    阅读次数:176
[leedcode 109] Convert Sorted List to Binary Search Tree
Given a singly linked list where elements are sorted in ascending order, convert it to a height balanced BST./** * Definition for singly-linked list. ...
分类:其他好文   时间:2015-07-21 23:47:06    阅读次数:145
[leedcode 107] Binary Tree Level Order Traversal II
Given a binary tree, return thebottom-up level ordertraversal of its nodes' values. (ie, from left to right, level by level from leaf to root).For exa...
分类:其他好文   时间:2015-07-21 23:44:58    阅读次数:124
php 配置一个自己的配置文件
实例:第一步、在application/config/目录下,创建一个 order.php 文件。加入如下代码: array( "0"=>"Android 客户端", "1"=>"iOS 客户端", "3"=>"微信公共帐号", "4...
分类:Web程序   时间:2015-07-21 18:33:54    阅读次数:106
Sql去重复查询
select *from ( select *, row_number() over (partition by Code order by code desc ) as seq from GNS_Goods ) as t where seq=1
分类:数据库   时间:2015-07-21 14:39:35    阅读次数:200
LeetCode 2 Add Two Numbers
You are giventwo linked lists representing two non-negative numbers. The digits are storedin reverse order and each of their nodes contain a single digit. Add the twonumbers and return it as a linked ...
分类:其他好文   时间:2015-07-21 12:53:28    阅读次数:121
提取方法对象
概念:本文中的“提取方法对象”是指当你发现一个方法中存在过多的局部变量时,你可以通过使用“提取方法对象”重构来引入一些方法,每个方法完成任务的一个步骤,这样可以使得程序变得更具有可读性。   正文:如下代码所示,Order 类中的Calculate方法要完成很多功能,在之前我们用“提取方法”来进行重构,现在我们采取“提取方法对象”来完成重构。 using System.Collect...
分类:其他好文   时间:2015-07-21 10:38:11    阅读次数:102
[LeetCode][Java] Binary Tree Level Order Traversal
题目: Given a binary tree, return the level order traversal of its nodes' values. (ie, from left to right, level by level). For example: Given binary tree {3,9,20,#,#,15,7}, 3 / 9...
分类:编程语言   时间:2015-07-20 23:40:10    阅读次数:161
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