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[LintCode] House Robber 打家劫舍
You are a professional robber planning to rob houses along a street. Each house has a certain amount of money stashed, the only constraint stopping yo ...
分类:其他好文   时间:2016-04-29 14:19:43    阅读次数:172
hibernate sqlQuery mysql别名问题
这两天,在写一些订单数据的查询展示(因为有些数据想在sql中直接算出)提高效率。所以用了自己拼装的hql之前是的sql如下:妥投/退货的SQLSELECTo.id,o.sn,o.community_id,o.seller_id,o.status,o.pay_rate,o.payment_id,o.payment_profit,o.cwy_profit,o.amount,o.delivery_fe..
分类:数据库   时间:2016-04-27 19:08:07    阅读次数:367
孤儿进程 && 僵尸进程
background: unix: 每个子进程退出,内核释放该进程所有资源,打开的文件,占用的内存 保留的信息:the process ID,the termination status of the process,the amount of CPU time taken by the proce ...
分类:系统相关   时间:2016-04-25 22:50:11    阅读次数:246
Leetcode题目:House Robber
题目: You are a professional robber planning to rob houses along a street. Each house has a certain amount of money stashed, the only constraint stoppin ...
分类:其他好文   时间:2016-04-20 21:52:34    阅读次数:124
block的学习(block和timer的循环引用问题)
一、什么是回调函数?回调函数,本质上也是个函数(搁置函数和方法的争议,就当这二者是一回事)。由“声明”、“实现”、“调用”三部分组成。在上面的例子中,我可以看出,函数amount(其实是Block),的声明和调用在A类中,而实现部分在B类中。也就是说,B类实现了amount函数,但并没有权限调用,最终还是 由A类触发调用。我们称这样的机制为“回调”。...
分类:其他好文   时间:2016-04-19 20:02:05    阅读次数:223
198. House Robber
You are a professional robber planning to rob houses along a street. Each house has a certain amount of money stashed, the only constraint stopping yo ...
分类:其他好文   时间:2016-04-17 10:19:50    阅读次数:135
多表联合查询后去重复数据后重新插入第一张表解决办法
查询结果如下:另一张关联表【通过goods表的goods_Id和in_warehouse_detail表的goods_id关联】 希望实现效果 ①根据主外键关联将in_warehouse_detail查询到的平均值【ROUND(sum(in_total_price)/sum(in_amount),2 ...
分类:其他好文   时间:2016-04-15 17:58:21    阅读次数:229
高性能MySQL笔记-第5章Indexing for High Performance-003索引的作用
一、 1. 1). Indexes reduce the amount of data the server has to examine.2). Indexes help the server avoid sorting and temporary tables.3). Indexes turn ...
分类:数据库   时间:2016-04-12 12:38:04    阅读次数:160
把json 转换成List集合
需要添加引用 System.Runtime.Serialization.dll [{"cId":2,"cName":"\u767d\u841d\u535c","amount":26,"price":"17"},{"cId":3,"cName":"\u80e1\u841d\u535c","amount ...
分类:Web程序   时间:2016-04-11 13:50:19    阅读次数:640
zoj 1076 Gene Assembly
Statement of the Problem With the large amount of genomic DNA sequence data being made available, it is becoming more important to find genes (parts o ...
分类:其他好文   时间:2016-04-06 02:05:06    阅读次数:197
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