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The game “The Pilots Brothers: following the stripy elephant” has a quest where a player needs to open a refrigerator.There are 16 handles on the refr...
分类:其他好文   时间:2014-05-26 22:16:23    阅读次数:329
模拟括号
Let S = s1 s2...s2n be a well-formed string of parentheses. S can be encoded in two different ways:q By an integer sequence P = p1 p2...pn where pi is...
分类:其他好文   时间:2014-05-26 22:07:33    阅读次数:300
LeetCode:Gray Code 题解
题目描述:The gray code is a binary numeral system where two successive values differ in only one bit.Given a non-negative integernrepresenting the total n...
分类:其他好文   时间:2014-05-26 21:30:04    阅读次数:296
分页查询SQL
SELECT* FROM(SELECTT.*,ROWNUMBER() OVER() AS ROWNUM FROM(SELECTL4_GDS_GROUP_CD CODE,L4_GDS_GROUP_DESC NAME FROMDM_GDS_GROUP_INF_TD WHERE(L4_GDS_GROUP_...
分类:数据库   时间:2014-05-26 20:44:28    阅读次数:256
MYSQL中delete删除多表数据
MYSQL中delete删除多表数据DELETE删除多表数据,怎样才能同时删除多个关联表的数据呢?这里做了深入的解释:1、 delete from t1 where 条件2、delete t1 from t1 where 条件3、 delete t1 from t1,t2 where 条件4、del...
分类:数据库   时间:2014-05-26 20:37:50    阅读次数:260
LeetCode:Gas Station 题解
There areNgas stations along a circular route, where the amount of gas at stationiisgas[i].You have a car with an unlimited gas tank and it costscost[...
分类:其他好文   时间:2014-05-26 13:25:00    阅读次数:270
数据库分页查询
SQLServer 分页查询1.SELECT TOP 30 * FROM ARTICLE WHERE ID NOT IN(SELECT TOP 45000 ID FROM ARTICLE ORDER BY YEAR DESC, ID DESC) ORDER BY YEAR DESC,ID DESC ...
分类:数据库   时间:2014-05-26 08:43:42    阅读次数:270
同一张表,查询某人最新一条记录
这是一张表的数据记录,现在想查询每个stuname最新的一条全部记录,也就是王鹏、王山、王丽最新的一条记录,查出来的结果在一张表上。 解法:select * from table as a where exists(select 1 from table group by stuname havin...
分类:其他好文   时间:2014-05-26 07:48:25    阅读次数:212
聚合函数,分组查询,连接查询综合例子
实例如下: update users set classes='1' where id in('u001','u002','u003','u004'); update users set classes='2' where id in('u005','u006','u007'); users表的内容如下: +------+-----------+------------+------+--...
分类:其他好文   时间:2014-05-24 20:41:35    阅读次数:254
oracle比较两个库同表栏目差异
select T.COLUMN_NAME,t.data_type ,c.comments from ALL_TAB_COLUMNS T ,user_col_comments c where 1=1 and c.table_name = t.table_name and c.c...
分类:数据库   时间:2014-05-24 07:57:41    阅读次数:266
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