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Java8 Stream初体验
如果你能说对下面这个语句的正确输出,那么恭喜你,这篇文章就不用看了~ List nums = Arrays.asList(1,1,null,2,3,4,null,5,6,7,8,9,10); System.out.println("sum is:"+nums.stream().filter(num -> num != null).distinct(). mapToInt(num ->...
分类:编程语言   时间:2015-02-23 22:31:19    阅读次数:270
PAT1078. Hashing
1078. Hashing (25)时间限制100 ms内存限制65536 kB代码长度限制16000 B判题程序Standard 作者CHEN, YueThe task of this problem is simple: insert a sequence of distinct positiv...
分类:其他好文   时间:2015-02-21 10:52:00    阅读次数:154
Codeforces Round #203 - D. Looking for Owls
D. Looking for OwlsEmperor Palpatine loves owls very much. The emperor has some blueprints with the new Death Star, the blueprints contain n distinct ...
分类:其他好文   时间:2015-02-21 00:16:05    阅读次数:445
【LeetCode从零单排】No70.ClimbingStairs
题目          爬楼梯问题,这是一道很有趣的问题。首先看题目: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?这...
分类:其他好文   时间:2015-02-20 14:08:50    阅读次数:160
poj 1094 Sorting It All Out[ topo]
传送门:http://poj.org/problem?id=1094 Sorting It All Out Description An ascending sorted sequence of distinct values is one in which some form of a less-than operator is used to order the elem...
分类:其他好文   时间:2015-02-20 09:46:55    阅读次数:159
51. N-Queens Leetcode Python
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. ...
分类:编程语言   时间:2015-02-20 09:44:13    阅读次数:171
[ACM] POJ 1094 Sorting It All Out (拓扑排序)
Sorting It All OutTime Limit:1000MSMemory Limit:10000KTotal Submissions:26801Accepted:9248DescriptionAn ascending sorted sequence of distinct values i...
分类:编程语言   时间:2015-02-18 16:24:49    阅读次数:187
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:2015-02-18 00:59:31    阅读次数:172
数据库的基本操作
一、简单查询语句格式:select*|具体的列名as[别名]from表名称防止重复查询结果的关键字:distinct(用法:用于列表的前面)二、限定查询格式:select*|具体的列名from表名称where条件表达式null:表示该列中没有值三、in关键字语法:select*from表名称where列名in(值1,值2...)..
分类:数据库   时间:2015-02-17 23:49:07    阅读次数:386
LeetCode 笔记22 Distinct Subsequences 动态规划需要冷静
Distinct SubsequencesGiven a stringSand a stringT, count the number of distinct subsequences ofTinS.A subsequence of a string is a new string which is...
分类:其他好文   时间:2015-02-16 20:58:05    阅读次数:180
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