Given a binary tree, return the level order traversal of its nodes' values. (ie, from left to right, level by level). For example:Given binary tree {3...
分类:
编程语言 时间:
2015-05-23 09:55:21
阅读次数:
126
第二道题
Add Two Numbers
如下:
You are given two linked lists representing two non-negative numbers. The digits are stored in reverse order and each of their nodes contain a singl...
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编程语言 时间:
2015-05-23 08:50:29
阅读次数:
190
PLSQL配置简介,优化来自为知笔记(Wiz)附件列表s=selectf=FROMw=WHEREsf=SELECT * FROMdf=DELETE FROMsc=SELECT COUNT(*) FROMob=ORDER BYgb= group by
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数据库 时间:
2015-05-22 13:10:58
阅读次数:
147
下面是3种方法方法1:SYS_CONNECT_BY_PATH , ROW_NUMBER() OVER(PARTITION BY .. ORDER BY ..) , START WITH , CONNECT BY PRIOR 组合使用方法2:wmsys.wm_concat方法3:listagg(ora...
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数据库 时间:
2015-05-22 11:29:59
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343
In this context, a feature is a point of interest on the image. In order to compare features, you "describe" them using a feature detector. Each
feature is then associated to a descriptor. When you ...
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其他好文 时间:
2015-05-21 22:41:59
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487
1 public function doedit_set(){ 2 $info=$this->_post("info"); 3 $id=$this->_post("id");//dump($info);exit(); 4 $user=DD("Order.OrderPac...
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Web程序 时间:
2015-05-21 21:59:58
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271
1 select top 1 * from table2 where something3 order by newid()每行增加newid(),然后排序取top 1大数据随机时使用SELECT * FROM Table1 WHERE (ABS(CAST( (BINARY_CHECKSUM(...
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数据库 时间:
2015-05-21 17:20:34
阅读次数:
171
with temptbl as (
select ROW_NUMBER () over (order by id desc )as 行号,* from news
)
select * from temptbl where 行号 between 9 and 16...
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其他好文 时间:
2015-05-21 15:34:58
阅读次数:
135
mysql分组取每组前几条记录(排名) 附group by与order by的研究http://www.jb51.net/article/31590.htm--按某一字段分组取最大(小)值所在行的数据代码如下:/* 数据如下: name val memo a 2 a2(a的第二个值) a 1 a1-...
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数据库 时间:
2015-05-21 10:40:29
阅读次数:
242
Given a binary tree, return thezigzag level ordertraversal of its nodes' values. (ie, from left to right, then right to left for the next level and al...
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其他好文 时间:
2015-05-21 10:28:55
阅读次数:
159