Pat1076代码
题目描述:
Weibo is known as the Chinese version of Twitter. One user on Weibo may have many followers, and may follow many other users as well. Hence a social network is formed with foll...
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其他好文 时间:
2014-05-10 04:50:24
阅读次数:
403
题目如下:
Matrix Chain Multiplication
Suppose you have to evaluate an expression like A*B*C*D*E where A,B,C,D and E are matrices. Since matrix multiplication is
associative, the order in which m...
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其他好文 时间:
2014-05-10 04:40:36
阅读次数:
318
需要每隔一段时间选取最老的商户更新时间戳:
update DP_Shop set DP_Shop.LastDate = now() where DP_Shop.ShopId in (select ShopId from DP_Shop order by LastDate limit 5);
ERROR 1235 (42000): This version of MySQL doesn't ...
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数据库 时间:
2014-05-10 04:22:58
阅读次数:
423
其特点是给定的段列表顺序归并,不像TieredMergePolicy那样按大小排序之后决定。
norm = log(10),levelFloor=log(minMergeSize)/norm,对段列表中的元素,添加level值为log(size)/norm(即使log 10 size)的seg。
从列表位置0开始,取最大的logLevel为maxLevel,levelBottom=(float...
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其他好文 时间:
2014-05-10 03:50:37
阅读次数:
306
Student表有3个字段:id,name,age看这两个SQL语句(1)select
name from student order by id;(2)select distinct(name) from student order by
id;执行结果你可能会说:第1句返回以id排序的所有nam...
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其他好文 时间:
2014-05-09 23:42:19
阅读次数:
368
SELECT * FROM ( SELECT ROW_NUMBER() OVER(ORDER BY
ca.PraiseNum desc) as RowID ,ca.[ArticleId] ...
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其他好文 时间:
2014-05-09 13:17:14
阅读次数:
409
<pstyle="padding-left:35px;padding-top:6px;"><%=link_to(t(‘mypage.live_order_btn‘),{:action=>"course_order",:id=>course.id,:back_action=>params[:action]},:style=>"color:white;font-weight:bold;text-decoration:none;")%></p>text-d..
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其他好文 时间:
2014-05-09 06:51:16
阅读次数:
267
The ? 1 ? 2 ? ... ? n = k problem
The problem
Given the following formula, one can set operators '+' or '-' instead of each '?', in order to obtain a given k
? 1 ? 2 ? ... ? n =...
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其他好文 时间:
2014-05-09 06:10:40
阅读次数:
285
Decryption 部分解题思路Level 1 to Level 9
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其他好文 时间:
2014-05-09 04:03:04
阅读次数:
235
JavaScript实现的购物车效果,当然这个效果可以运用在好多地方,比如好友的选择,人力资源模块,计算薪资,人员的选择等等。下面看类似某种购物车的效果图:
code:
Insert title here
table{
border:10px;
}
select{
width:200px;
height:400px;
}
#order_area{
display:none;
}...
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编程语言 时间:
2014-05-09 00:59:09
阅读次数:
473