Reverse a string.It contain list of names

NSString *names = @"Rajaram, Chris, Kumar, Darmesh, Ramesh, Sathya, Shiva, Saravanan";

NSArray *arr=[names componentsSeparatedByString:@","];

    NSArray *ty=[[arr reverseObjectEnumerator]allObjects];

    NSMutableString *sr=[[NSMutableString alloc]init];

    for(int i=0;i<[arr count];i++)

{

        [sr appendString:[NSString stringWithFormat:@"%@,",[ty objectAtIndex:i]]];

}

    NSLog(@"%@",sr);