Given a singly linked list where elements are sorted in ascending order, convert it to a height balanced BST.方法:为了使BST高度平衡,要找链表中的中值作为当前根节点。/** * Defin...
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其他好文 时间:
2014-08-04 20:37:47
阅读次数:
194
Description
N children are sitting in a circle to play a game.
The children are numbered from 1 to N in clockwise order. Each of them has a card with a non-zero integer on it in his/her hand. The ...
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其他好文 时间:
2014-08-04 17:57:27
阅读次数:
284
Problem Description
In order to understand early civilizations, archaeologists often study texts written in ancient languages. One such language, used in Egypt more than 3000 years ago, is based on c...
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其他好文 时间:
2014-08-04 11:03:57
阅读次数:
235
BME学习总结02 //查询数据库的SQL.XML order by OPER_ID desc ]]>
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其他好文 时间:
2014-08-04 01:46:16
阅读次数:
443
子查询的位置: select 中、from 后、where 中.group by 和order by 中无实用意义。 子查询分为如下几类: 1,标量子查询:返回单一值的标量,最简单的形式。 2,列子查询:返回的结果集是 N 行一列。 3,行子查询...
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数据库 时间:
2014-08-03 23:37:26
阅读次数:
962
Given a linked list and a value x, partition it such that all nodes less than x come before nodes greater than or equal to x.
You should preserve the original relative order of the nodes in each of...
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其他好文 时间:
2014-08-03 23:28:56
阅读次数:
261
由于想要解决Mybatis分页插件中count查询效率问题,因为order by很影响效率,所以需要一种方式处理sql,将order by 语句去掉。
试了好几个sql解析工具,最后选择了fdb-sql-parser。
Maven依赖:
com.foundationdb
fdb-sql-parser
1.3.0
项目地址:https://gi...
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数据库 时间:
2014-08-03 23:17:06
阅读次数:
393
group_concat()主要功能:能将相同的行组合起来完整的语法如下:group_concat([DISTINCT] 要连接的字段 [Order BY ASC/DESC 排序字段] [Separator '分隔符'])基本查询Sql代码select*fromaa;+------+------+|...
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数据库 时间:
2014-08-03 12:34:05
阅读次数:
352
/// /// 自动生成会员卡号 /// void CardNumber() { string sql = string.Format("select top 1 cardId from cardInfo order by cardId desc"); DBHelper.cmd = new...
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Web程序 时间:
2014-08-03 12:31:25
阅读次数:
417
1.根据ROWID来分select * from t_xiaoxi where rowid in(select rid from (select rownum rn,rid from(select rowid rid,cid from t_xiaoxi order by cid desc) wher...
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数据库 时间:
2014-08-03 12:30:55
阅读次数:
321