99房

1.IP匹配

 

/** * 判断是否为合法IP * @return the ip */ public boolean isboolIp(String ipAddress) { String ip = "([1-9]|[1-9]//d|1//d{2}|2[0-4]//d|25[0-5])(//.(//d|[1-9]//d|1//d{2}|2[0-4]//d|25[0-5])){3}"; Pattern pattern = Pattern.compile(ip); Matcher matcher = pattern.matcher(ipAddress); return matcher.matches(); }

2.循环有序数组

http://blogold.chinaunix.net/u2/84449/showart_2020865.html

3.二维数组打印

输入

[1,2]

[3]

[4,5]

输出

1,3,4

1,3,5

2,3,4

2,3,5

 

 

Android：

filter-intent:http://blog.csdn.net/lmhit/archive/2010/05/10/5576250.aspx

looper:

layout-gravity