Problem Description
In order to get rid of Conan, Kaitou KID disguises himself as a teacher in the kindergarten. He knows kids love games and works out a new game called "hand in hand".
Initiall...
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其他好文 时间:
2015-03-19 23:59:41
阅读次数:
435
--统计男女生的总人数select COUNT(*) from Student where Sex='男'select COUNT(*) from Student where Sex='女'--统计每一个班级的总人数select COUNT(*) from Student where ClassId...
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其他好文 时间:
2015-03-19 23:55:51
阅读次数:
150
problem:
Given a string containing just the characters '(', ')', '{', '}', '[' and ']',
determine if the input string is valid.
The brackets must close in the correct order, "()" and "()[]{}" are...
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其他好文 时间:
2015-03-19 22:08:16
阅读次数:
105
在mysql中如果是小数据量分页我们直接使用limit x,y即可,但是如果千万数据使用这样你无法正常使用分页功能了,那么大数据量要如何构造sql查询分页呢?般刚开始学SQL语句的时候,会这样写代码如下:代码如下复制代码SELECT * FROM table ORDER BY id LIMIT 10...
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数据库 时间:
2015-03-19 18:02:21
阅读次数:
218
Given an array and a value, remove all instances of that value in place and return the new length.
The order of elements can be changed. It doesn't matter what you leave beyond the new length.
#incl...
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其他好文 时间:
2015-03-19 13:17:13
阅读次数:
124
1 SELECT TOP (5) orderid, orderdate, custid, empid2 FROM Sales.Orders3 ORDER BY orderdate DESC, orderid DESC;4 5 SELECT TOP (5) WITH TIES orderid, ord...
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其他好文 时间:
2015-03-19 06:20:19
阅读次数:
142
题目:
Given an array and a value, remove all instances of that value in place and return the new length.The order of elements can be changed. It doesn’t matter what you leave beyond the new length. 这道题比...
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其他好文 时间:
2015-03-18 23:25:51
阅读次数:
290
Given a sorted array of integers, find the starting and ending position of a given target value.
Your algorithm's runtime complexity must be in the order of O(log n).
If the target is not found in t...
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其他好文 时间:
2015-03-18 23:18:45
阅读次数:
170
最快select id,name,content,time,re_id,is_replay from tb_content where re_id = 0 and id between 19993 and 19998 order by id desc大于10000条以上用select id,nam....
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Web程序 时间:
2015-03-18 17:44:50
阅读次数:
164
新建一个表CREATE TABLE orders(order_id INT PRIMARY KEY AUTO_INCREMENT,order_no VARCHAR(20),order_price FLOAT);INSERT INTO orders(order_no, order_price) VAL...
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其他好文 时间:
2015-03-18 17:42:00
阅读次数:
137