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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 m...
分类:其他好文   时间:2014-06-04 20:01:32    阅读次数:340
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:2014-06-04 19:53:34    阅读次数:173
CodeForces 432C Prime Swaps
DescriptionYou have an arraya[1],?a[2],?...,?a[n], containing distinct integers from1ton. Your task is to sort this array in increasing order with the...
分类:其他好文   时间:2014-05-31 01:35:23    阅读次数:318
Distinct Subsequences
Given a stringSand a stringT, count the number of distinct subsequences ofTinS.A subsequence of a string is a new string which is formed from the orig...
分类:其他好文   时间:2014-05-30 15:58:40    阅读次数:187
poj 1094 Sorting It All Out
DescriptionAn ascending sorted sequence of distinct values is one in which some form of a less-than operator is used to order the elements from smalle...
分类:其他好文   时间:2014-05-30 14:31:10    阅读次数:297
SQL总结(一)基本查询
本文希望通过简单的总结,把常用的查询方法予以总结,希望能够明确在心主要涵盖:模糊查询、排序、分组、集合函数、TOP、Case包括:Between、In、Like、And、Or、Order by包括:Group by、Distinct、MAX\MIN、Avg、Count、Sum、Having、Top、...
分类:数据库   时间:2014-05-29 23:13:46    阅读次数:456
HDU 2253 Longest Common Subsequence Again
其实这个题我还不会,学长给了一个代码交上去过了,据说用到了一种叫做位压缩的技术,先贴代码吧,以后看懂了再来写#include #include #define M 30005#define SIZE 128#define WORDMAX 3200#define BIT 32char s1[M], s...
分类:其他好文   时间:2014-05-29 18:07:53    阅读次数:549
sql去除重复语句
转自芙蓉清秀的BLOGhttp://blog.sina.com.cn/liurongxiu1211sql去除重复语句(2012-06-15 15:00:01)sql 单表/多表查询去除重复记录单表distinct多表group bygroup by 必须放在 order by 和 limit之前,不...
分类:数据库   时间:2014-05-28 04:00:47    阅读次数:280
【LeetCode】Climbing Stairs
题目 You are climbing a stair case. It takes n steps to reach to the top. Each time you can either climb 1 or 2 steps. In how many distinct ways can you climb to the top? 解答...
分类:其他好文   时间:2014-05-25 00:37:34    阅读次数:284
LeetCode: N-Queens [050]
【题目】 The n-queens puzzle is the problem of placing n queens on an n×n chessboard such that no two queens attack each other. Given an integer n, return all distinct solutions to the n-queens puzzle. Each solution contains a distinct board configuratio...
分类:其他好文   时间:2014-05-24 17:12:32    阅读次数:237
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