Question

I have an NSString *string=@”606″ and I want to add a “:” colon after two digits.
The output should look like this: 6:06
It this is possible?

Help would be appropriated.
Thank you very much.

Answer 1

You can add the column between the hours and the minutes like this:

NSString *string = @"606";
NSString *result = [string stringByReplacingCharactersInRange:NSMakeRange(string.length-2, 0) withString:@":"];
NSLog(@"%@", result);

This will give the following results

@"606"  =>  @"6:06"
@"1200" =>  @"12:00"
@"1406" =>  @"14:30"

Note: This will only work if the string has 3 or 4 characters, but this is the case according to your question.