This time you are asked to tell the difference between the lowest grade of all the male students and the highest grade of all the female students.
Input Specification:
Each input file contains one t...
分类：
其他好文 时间：
2015-04-29 17:12:41
阅读次数：
131
2.高级型
在高级型查询中，是将SELECT的语句的高级应用，以及怎样使用它查询数据库中符合条件的数据，例如通过BETWEEN来限制查询的范围和条件，并将获得的结果保存到表或视图。...
分类：
数据库 时间：
2015-04-29 13:44:07
阅读次数：
159
索引范围扫描（INDEX RANGE SCAN）适用于所有类型的B树索引，当扫描的对象是唯一性索引时，此时目标SQL的where条件一定是范围查询（谓词条件为 BETWEEN、等）；当扫描的对象是非唯一性索引时，对目标SQL的where条件没有限制（可以是等值查询，也可以是范围查询）。 索引范围扫描...
分类：
其他好文 时间：
2015-04-29 00:16:45
阅读次数：
347
1. Combinercombiner is between map and reduce, similar to reducer, combine some data before reducer.http://hadooptutorial.wikispaces.com/Custom+combin...
分类：
其他好文 时间：
2015-04-28 13:42:33
阅读次数：
192
iOS进阶面试题----多线程部分前言：欢迎大家评论，给出正确地答案1.Difference between shallow copy and deep copy?浅复制和深复制的区别？答案：浅层复制：只复制指向对象的指针，而不复制引用对象本身。深层复制：复制引用对象本身。意思就是说我有个A对象，复...
分类：
移动开发 时间：
2015-04-28 01:50:04
阅读次数：
187
EDI is nothing but Electronic data interchange. SAP will support EDI through Intermediate documents (IDOCS).EDI (Electronic Document interchange) - ED...
分类：
其他好文 时间：
2015-04-27 23:16:41
阅读次数：
157
Greg has a weighed directed graph, consisting of n vertices. In this graph any pair of distinct vertices has an edge between them in both directions. Greg loves playing with the graph and now he has in...
分类：
其他好文 时间：
2015-04-27 15:17:42
阅读次数：
112
14181. Flying Safely
Constraints
Time Limit: 1 secs, Memory Limit: 256 MB
Description
Due to budget cuts, even spies have to use commercial airlines nowadays to travel between cities...
分类：
其他好文 时间：
2015-04-27 10:00:29
阅读次数：
195
cconv
cconv(pronunciation: see-conv.) is iconv based simplified-traditional chinese conversion tool. It is NOT only transcoding programm, but also TRANSLATE tools between the Simplified Chinese and...
分类：
其他好文 时间：
2015-04-25 22:47:24
阅读次数：
211
LinearRegressionfits a linear model with coefficientsto minimize the residual sum of squares between the observed responses in the dataset, and the re...
分类：
其他好文 时间：
2015-04-25 10:40:58
阅读次数：
212
