This is my sample code to convert a integer into string.Is it very costly to do the multiple loops of [NSMutableString stringWithFormat:..]?I.e should I just use appendString and get the NSString in reverse order and then do one for loop to reverse this reverse string.Is there any other faster/more elegant way?NSString * intToString(NSInteger numberToConvert){    BOOL isNegative = (numberToConvert < 0);    if (isNegative)    {        numberToConvert = -1*numberToConvert;    }    NSMutableString *convertedString = [[NSMutableString alloc] init];    while(numberToConvert != 0)    {        convertedString = [NSMutableString stringWithFormat:@%ld%@,numberToConvert%10,convertedString];        numberToConvert = numberToConvert/10;    }    if (isNegative)    {        convertedString = [NSMutableString stringWithFormat:@-%@,convertedString];    }    return convertedString;}
Convert NSInteger into NSString
interview questions;objective c;formatting;integer