当前位置：首页 -> AI编程基础 -> JAVA

取出一个字符串中的所有数字组成一个新的字符串

2014-11-23 23:37:57 · 作者: · 浏览: 0
标签: 取出 一个 字符串 所有 数字 组成
NSMutableString *mutStr = [NSMutableString string];

for (int i=0; i NSString *a = [s substringToIndex:i+1];
a = [a substringFromIndex:i];
[mutArrShu addObject:a];
}

for (NSString *b in mutArrShu) {
NSString *emailRegex = @"^[0-9]*$";
NSPredicate *emailTest = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", emailRegex];
BOOL isShu = [emailTest eva luateWithObject:b];
if (isShu) {
[mutStr appendString:b];
}
}