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
今天又个兄弟求助，数据库里一个表有数据如下：
no name
1 a
2 b
3 c
4 d
如何用一个sql显示如下结果：
ab
ac
ad
bc
bd
cd
对于这种构造数据，是分析函数的强项，下面来做个试验：
create table t (no number,name varchar(2));
insert into t va...
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其他好文 时间：
2014-05-07 08:03:17
阅读次数：
447
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
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
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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
这几天搞了一下Oracle数据库，可能用sql server习惯了，感觉好不方便。PL的界面友好度比sql server差远了 ，既然都收购了PL了
为什么不给它做好一点呢？各种不便。郁闷
向Oracle服务器插入一条数据
--不管什么格式通通用''引号引起来。不过INTEGER格式的还是别用引号
insert into T_SITE VALUES(
8, --注意主键别与表里的其他主键冲...
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数据库 时间：
2014-05-07 03:24:59
阅读次数：
319
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
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280
【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
