The Chef likes to stay in touch with his staff. So, the Chef, the head server, and the sous-chef all carry two-way transceivers so they can stay in constant contact. Of course, these transceivers have...
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其他好文 时间：
2014-05-10 09:11:21
阅读次数：
334
John is going on a fishing trip. He has h hours available (1 <= h <= 16), and there are n lakes in the area (2 <= n <= 25) all reachable along a single, one-way road. John starts at lake 1, but he can finish at any lake he wants. He can only travel from on...
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其他好文 时间：
2014-05-07 08:48:52
阅读次数：
515
Paint the Grid Reloaded
Time Limit: 2 Seconds
Memory Limit: 65536 KB
Leo has a grid with N rows and M columns. All cells are painted with either black or white initially.
Two cells A ...
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其他好文 时间：
2014-05-07 07:28:35
阅读次数：
480
SQL SERVER命令总结
查询语句:
SELECT [ALL/DISTINCT][TOP]
[as 别名][, as 别名]…
FROM [as 别名]…
[WHERE 条件表达式…]
[GROUP BY [HAVING]]
[ORDER BY[ASC/DESC]]
应该注意:SELECT语句的顺序:
SELECT-->FROM-->WHERE-->GROUP B...
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数据库 时间：
2014-05-07 04:32:52
阅读次数：
561
【题目】
Chapter 1 | Arrays and Strings
原文：
1.1 Implement an algorithm to determine if a string has all unique characters. What if you can not use additional data structures?
译文:
实现一个算法来判断一个字符串中的字符...
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其他好文 时间：
2014-05-07 04:27:41
阅读次数：
312
CareerCup
目录
Chapter 1 | Arrays and Strings
1.1 Implement an algorithm to determine if a string has all unique characters. What if you can not use additional data structures?
1.2 Write co...
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其他好文 时间：
2014-05-07 04:25:44
阅读次数：
320
【Question】
Implement atoi to convert a string to an integer.
Hint: Carefully consider all possible input cases. If you want a challenge, please do not see below and ask yourself what are the p...
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其他好文 时间：
2014-05-07 04:17:18
阅读次数：
259
Subtraction Game 1
Chef is playing a game on a sequence of N positive integers, say A1, A2, ... AN. The game is played as follows.
If all the numbers are equal, the game ends.Otherwise
Sele...
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其他好文 时间：
2014-05-07 03:14:01
阅读次数：
280
Hive是基于Hadoop的一个数据仓库工具，可以将结构化的数据文件映射为一张数据库表，并提供简单的sql查询功能，可以将sql语句转换为MapReduce任务进行运行。
最常用的就是多表关联查询，主要讲解下join、outer join和semi join的具体使用。
join是最简单的关联操作，两边关联只取交集。
outer join分为left outer join、rig...
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其他好文 时间：
2014-05-06 15:01:38
阅读次数：
269
【Question】
Given an array S of n integers, are there elements a, b, c in S such
that a + b + c = 0? Find all unique triplets in the array which gives the sum of zero.
Note:
Elements in ...
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其他好文 时间：
2014-05-06 14:57:29
阅读次数：
318
