面向对象 编程思想 从需求出发 从现实世界出发对象:一切客观存在的事物 什么都是对象 是什么
is a 继承属性:有什么 has a 关联(聚合) 方法:能做什么 use a 依赖面向对象思想:先找到解决问题所需的对象,再通过对象间的联系(3...
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编程语言 时间：
2014-07-22 23:09:55
阅读次数：
388
Xenia the beginner mathematician is a third year student at elementary school. She is now learning the addition operation.
The teacher has written down the sum of multiple numbers. Pupils should ca...
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其他好文 时间：
2014-07-22 23:05:53
阅读次数：
382
The circle line of the Berland subway has n stations. We know the distances between all pairs of neighboring stations:
d1 is
the distance between the 1-st and the 2-nd
station;
d2 is
the d...
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其他好文 时间：
2014-07-22 23:05:14
阅读次数：
302
DescriptionAstronomers often examine star maps
where stars are represented by points on a plane and each star has Cartesian
coordinates. Let the level...
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其他好文 时间：
2014-05-01 05:42:32
阅读次数：
368
1D people lived in a 1D country. Everything in the country was one-dimensional, and everything was simple and clear: just one axis and two directions — forward and backward. Even a 1D world has proble...
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其他好文 时间：
2014-04-29 13:44:22
阅读次数：
284
利用cvs提交项目时项目提交是一个空文件夹，报错如下；
删除这个项目分享是，报错：
原因：这是文件系统不同步的问题，是因为在eclipse或mycelipse之外对工程中的resource进行修改引起的（或者是由不同的系统间对文件进行修改引起的）；
解决办法：上传前和更新前都刷新一下工程，右键项目名---->Refresh
这个问题拖了几天没有得到解决，本来以为没有...
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其他好文 时间：
2014-04-29 13:43:21
阅读次数：
786
Corn Fields
Time Limit: 2000MS
Memory Limit: 65536K
Total Submissions: 6460
Accepted: 3436
Description
Farmer John has purchased a lush new rectangular pasture compos...
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其他好文 时间：
2014-04-29 13:37:20
阅读次数：
339
Aggressive cows
Time Limit: 1000MS
Memory Limit: 65536K
Total Submissions: 5436
Accepted: 2720
Description
Farmer John has built a new long barn, with N (2 <= N <= 100,...
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其他好文 时间：
2014-04-29 13:22:21
阅读次数：
304
The blonde Angela has a new whim: internet chats. Of course, as any blonde, she writes her messages using the upper case. You are the moderator of Angela's favorite chat and you're fed up with her upp...
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其他好文 时间：
2014-04-29 13:17:21
阅读次数：
293
FAILED: Error in metadata: java.lang.RuntimeException: MetaException(message:org.apache.hadoop.hive.serde2.SerDeException org.apache.hadoop.hive.hbase.HBaseSerDe: columns has 3 elements while hbase.columns.mapping has 4 elements (counting the key if implic...
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其他好文 时间：
2014-04-29 13:17:21
阅读次数：
387
