字符串匹配

单个字符串匹配

1. NSString *regEx = [NSString stringWithFormat:@".*%@.*", yourSearchString];
   
2. NSRange r = [stringToSearch rangeOfString:regEx options:NSRegularExpressionSearch];
   
3. if (r.location != NSNotFound) {
   
4. 
   
5. }