Appending NSString with Zeros depending upon length

Question

I have a string, length may vary but I have to check if its length is less then 12 and if yes append those many zeros to it.

Like:

str = Test123, output should be Test12300000
str = Test123456, output should be Test12345600

Only 12 Char is allowed in string.

Tried below code but not getting generic result. There must be a better and easy way to do.

- (NSString *)formatValue:(NSString *)str forDigits:(NSString *)zeros {
    return [NSString stringWithFormat:@"%@%@", str ,zeros]; 
}

score 2 · Accepted Answer · answered Jun 07 '17 at 09:31

2

how about something like this:

- (NSString *)stringToFormat:(NSString *)str {
    while (str.length <12) {
        str = [NSString stringWithFormat:@"%@0", str];
    }

    return str;
}

answered Jun 07 '17 at 09:31

Serj

696
5
17

thank you, i tested with 10 digit and it gave me 12 digit with two zeros at the end ...i will test for rest different string. thank you once again. – user2813740 Jun 07 '17 at 09:41
You are welcome! :) @user2813740 – Serj Jun 07 '17 at 09:42

score 1 · Answer 2 · answered Jun 07 '17 at 09:37

1

This is fast and simple, I think.

- (NSString *)stringToFormat:(NSString *)str {
    return [str stringByAppendingString:[@"000000000000" substringFromIndex:str.length]];
}

Just make sure the string is never more than 12 characters.

answered Jun 07 '17 at 09:37

LGP

4,135
1
22
34

Thank you. i tested and it work fine for 10 digit. – user2813740 Jun 07 '17 at 10:00

Appending NSString with Zeros depending upon length

2 Answers2