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输入hostname -f提示:hostname: Unknown host
解决方法:将/etc/hosts文件中的内容添加如下所示127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4::1 localhost localhost.localdomain lo...
分类:其他好文   时间:2014-07-19 22:01:23    阅读次数:176
UVA - 10895 Matrix Transpose
UVA - 10895 Matrix Transpose Time Limit:3000MS   Memory Limit:Unknown   64bit IO Format:%lld & %llu [Submit]  [Go Back]  [Status]   Description  A: Matrix Transp...
分类:其他好文   时间:2014-07-18 23:00:14    阅读次数:241
【leetcode刷题笔记】Search in Rotated Sorted Array
Suppose a sorted array is rotated at some pivot unknown to you beforehand.(i.e.,0 1 2 4 5 6 7might become4 5 6 7 0 1 2).You are given a target value t...
分类:其他好文   时间:2014-07-18 20:00:41    阅读次数:205
Oracle中查看所有表和字段
获取表字段: select * from user_tab_columns where Table_Name='用户表' order by column_name 获取表注释: select * from user_tab_comments where Table_Na...
分类:数据库   时间:2014-07-17 13:34:00    阅读次数:240
[ACM] POJ 1611 The Suspects (并查集,输出第i个人所在集合的总人数)
The SuspectsTime Limit: 1000MS Memory Limit: 20000KTotal Submissions: 21586 Accepted: 10456DescriptionSevere acute respiratory syndrome (SARS), an atypical pneumonia of unknown aetiology, was recogniz...
分类:其他好文   时间:2014-07-17 10:37:49    阅读次数:296
android binder 机制三(匿名Service)
什么是匿名Service?凡是没有到ServiceManager上注册的Service,都是匿名Service。 还是拿上一篇的例子来举例,看代码: status_t MediaPlayer::setDataSource(int fd, int64_t offset, int64_t length) { status_t err = UNKNOWN_ERROR; const s...
分类:移动开发   时间:2014-07-16 17:17:32    阅读次数:379
POJ 1611 The Suspects
Description Severe acute respiratory syndrome (SARS), an atypical pneumonia of unknown aetiology, was recognized as a global threat in mid-March 2003. To minimize transmission to others, the best s...
分类:其他好文   时间:2014-07-16 14:29:06    阅读次数:195
HBase原子性保证
HBase提供基于单行数据操作的原子性保证 即:对同一行的变更操作(包括针对一列/多列/多column family的操作),要么完全成功,要么完全失败,不会有其他状态...
分类:其他好文   时间:2014-07-15 12:46:13    阅读次数:367
Android项目引入actionbarsherlock作为library后混淆之后的异常
现象: Android APP中,引入actionbarsherlock 开源库作为滑动菜单,调试运行没有问题,项目混淆打包后,程序运行异常退出,截获异常log为: java.lang.ExceptionInInitializerError at com.actionbarsherlock.app.SherlockFragmentActivity.getSherlock(Unknown...
分类:移动开发   时间:2014-07-15 12:42:58    阅读次数:218
com.mysql.jdbc.MysqlDataTruncation: Data trunca...
连接的是mysql数据库,插入数据时,控制台报:com.mysql.jdbc.MysqlDataTruncation: Data truncation: Data too long for column 'user_name' at row 1错误,具体信息如下:严重: Servlet.servic...
分类:数据库   时间:2014-07-14 15:41:18    阅读次数:249
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