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52. N-Queens II Leetcode Python
Follow up for N-Queens problem. Now, instead outputting board configurations, return the total number of distinct solutions. 这题的解法是建一个board表示行比如n=4 时候board=[1,3,0,2] 表示   0Q00,000Q,Q000,00Q0...
分类:编程语言   时间:2015-02-11 09:23:42    阅读次数:148
扩展Linq的Distinct方法动态根据条件进行筛选
声明为了方便自己查看所以引用原文地址:http://www.cnblogs.com/A_ming/archive/2013/05/24/3097062.htmlPerson1: Id=1, Name="Test1"Person2: Id=1, Name="Test1"Person3: Id=2, N...
分类:其他好文   时间:2015-02-10 18:40:09    阅读次数:152
leetcode[52]N-Queens II
Follow up for N-Queens problem.Now, instead outputting board configurations, return the total number of distinct solutions.class Solution {public:void...
分类:其他好文   时间:2015-02-10 14:42:32    阅读次数:126
With语句在数据统计应用
WITH TMP_EXECUTOR(EXECUTOR,EXECUTORNAME) AS ( SELECT DISTINCT T.EXECUTOR ,T1.FULLNAME AS EXECUTORNAMEFROM (SELECT DISTINCT T1.TASKID , T2.EXE...
分类:其他好文   时间:2015-02-09 21:32:12    阅读次数:151
COUNT(*),count(1),COUNT(ALL expression),COUNT(DISTINCT expression)
创建一个测试表 1 IF OBJECT_ID( 'dbo.T1' , 'U' 2 )IS NOT NULL 3 BEGIN 4 DROP TABLE dbo.T1; 5 END; 6 GO 7 CREATE TABLE dbo.T1( colu...
分类:其他好文   时间:2015-02-09 20:03:28    阅读次数:160
leetcode[70]Climbing Stairs
You are climbing a stair case. It takesnsteps to reach to the top.Each time you can either climb 1 or 2 steps. In how many distinct ways can you climb...
分类:其他好文   时间:2015-02-09 15:48:29    阅读次数:101
leetcode[78]Subsets
Given a set of distinct integers,S, return all possible subsets.Note:Elements in a subset must be in non-descending order.The solution set must not co...
分类:其他好文   时间:2015-02-09 15:26:35    阅读次数:122
常用数据操纵语言
DISTINCT:指定结果集中返回指定列存在不重复数据的记录SELECTDISTINCTEMAILFROMHR.EMPLOYEES;ROWNUM:使用ROWNUM列来查询结果集中前N个记录SELECT*FROMHR.EMPLOYEESWHEREROWNUM<=3;显示列别名:SELECTEMP_NAMEAS姓名FROMHR.EMPLOYEES;设置查询条件:SELECTSALARYFROMHR.EMPL..
分类:编程语言   时间:2015-02-08 23:25:25    阅读次数:366
leetcode[159]Longest Substring with At Most Two Distinct Characters
找到最多含有两个不同字符的子串的最长长度。例如:eoeabc,最长的是eoe为3,其他都为2.例如:string s="aqaqedadcdccd";使用一个map fmap记录每个字符出现的个数,详解在程序中注释。int lengthOfLongestSubstringTwoDistinct(st...
分类:其他好文   时间:2015-02-08 23:12:12    阅读次数:150
lintcode: k Sum 解题报告
k SumShow ResultMy Submissionshttp://www.lintcode.com/en/problem/k-sum/题目来自九章算法13%AcceptedGiven n distinct positive integers, integer k (k = 0) { ...
分类:其他好文   时间:2015-02-08 09:01:04    阅读次数:197
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