码迷,mamicode.com
首页 >  
搜索关键字:distinct subsequence    ( 4379个结果
msql 综合练习
8.统计列印各科成绩,各分数段人数: 课程ID,课程名称,[100-85],[85-70],[70-60],[ b 时,[a, b]是一个空集。9.列印学生平均成绩及其名次 select count(distinct b.f) as 名次,a.学生ID,max(a.学生姓名),max(a.f) fr...
分类:数据库   时间:2014-11-15 11:15:53    阅读次数:302
UVA 10069 Distinct Subsequences(DP)
考虑两个字符串,我们用dp[i][j]表示字串第到i个和字符串到第j个的总数,因为字串必须连续 因此dp[i][j]可以有dp[i][j-1]和dp[i-1][j-1]递推而来,而不能由dp[i-1][j]递推而来。而后者的条件 是字串的第i个和字符串相等。 Problem E Distinct Subsequences Input: standard input Output...
分类:其他好文   时间:2014-11-15 00:13:39    阅读次数:219
MySQL sql 执行步骤
基本步骤是1.from2.join on3.where4.group by5.having6.order by7.select8.distinct ,sum,...9.limitjoin table 一定要有索引不然就是笛卡尔积了。inner join 的特别正确来讲 mysql 会先base on...
分类:数据库   时间:2014-11-14 22:30:14    阅读次数:334
LeetCode 115 Distinct Subsequences
Given a string S and a string T, count the number of distinct subsequences of T in S. A subsequence of a string is a new string which is formed from the original string by deleting some (can be none)...
分类:其他好文   时间:2014-11-14 12:40:18    阅读次数:111
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:2014-11-14 10:30:42    阅读次数:146
Select Distinct Rows from DataTable
Select Distinct Rows from DataTable' True=distinctDim table As DataTable = Me.SP3DPIA2014R1DataSet.SP3DPIA.AsDataView.ToTable(True, "ShortName")Sp3dpi...
分类:其他好文   时间:2014-11-13 16:02:59    阅读次数:163
[Leetcode] 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:2014-11-13 09:19:23    阅读次数:220
Climbing Stairs
Climbing StairsYou 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 way...
分类:其他好文   时间:2014-11-12 16:24:33    阅读次数:226
[leetcode]Subsets
问题描述: 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 contain duplicate subsets. For ex...
分类:其他好文   时间:2014-11-12 11:46:52    阅读次数:169
Mysql常用语句
SQL常用语句: 一、常用关键词:1.distinct:过滤重复select distinct create_user_name from bms_project; 此种情况下,就要用到distinct过滤掉重复的。2.count: 统计select count(*) from bms_projec...
分类:数据库   时间:2014-11-12 11:46:20    阅读次数:237
© 2014 mamicode.com 版权所有  联系我们:gaon5@hotmail.com
迷上了代码!