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LeetCode 011 Container With Most Water
题目描述:Container With Most WaterGivennnon-negative integersa1,a2, ...,an, where each represents a point at coordinate (i,ai).nvertical lines are drawn s...
分类:其他好文   时间:2015-02-07 15:53:27    阅读次数:141
数据库系列之数据管理(删除数据)
使用DELETE Table语句删除数据 DELETE FROM [WHERE ] DELETE FROM Books WHERE BookCode='981267' 问题:使用Delete删除数据时,不能删除主键值被引用的数据行。 使用Truncate Table语句删除数据 Truncate T...
分类:数据库   时间:2015-02-07 15:47:54    阅读次数:255
数据库系列之查询(1)
基础查询 1 语法 SELECT FROM [WHERE ] [ORDER BY [ASC或DESC]] 2 示例 SELECT AuthorName, Email, Age FROM Authors WHERE City='北京' ORDER BY AuthorID...
分类:数据库   时间:2015-02-07 15:45:53    阅读次数:278
getField()和select()方法的区别
在ThinkPHP中,查询数据库是必不可少的操作。那么,getField()方法和select()方法都是查询的方法,到底有什么不同呢?案例来说明:A、select()方法例子11 $access=M('access')->where(array('role_id'=>$rid))-...
分类:其他好文   时间:2015-02-07 15:45:21    阅读次数:180
leetcode 113. Path Sum II
Given a binary tree and a sum, find all root-to-leaf paths where each path's sum equals the given sum.For example:Given the below binary tree andsum =...
分类:其他好文   时间:2015-02-07 14:23:22    阅读次数:169
LeetCode Word Break II
Given a string s and a dictionary of words dict, add spaces in s to construct a sentence where each word is a valid dictionary word.Return all such possible sentences.For example, given s = “catsanddo...
分类:其他好文   时间:2015-02-07 13:12:11    阅读次数:188
Oracle中的null
1. 包含null的表达式都为null2. null永远!= null select * from emp where comm=null // error select * from emp where comm is null 3. nvl(filedName,0) // 如果为空...
分类:数据库   时间:2015-02-07 11:35:00    阅读次数:114
Lintcode: Implement Queue by Stacks
As the title described, you should only use two stacks to implement a queue's actions.The queue should support push(element), pop() and top() where po...
分类:其他好文   时间:2015-02-07 08:03:40    阅读次数:143
hibernate一些坑记录集
1:对比原生sql查询和 hql查询 返回结果的类型count:sql: select count(0) from xxx where .... 返回 BigIntegerhql: select count(0) from xxx where .... 返回 Longmax:sql: select ...
分类:Web程序   时间:2015-02-06 23:14:52    阅读次数:294
LeetCode --- 39. Combination Sum
题目链接:Combination Sum Given a set of candidate numbers (C) and a target number (T), find all unique combinations in C where the candidate numbers sums to T. The same repeated number may be chosen fro...
分类:其他好文   时间:2015-02-06 21:47:21    阅读次数:158
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