Create NSString by repeating another string a given number of times

Question

This should be easy, but I\'m having a hard time finding the easiest solution.

I need an NSString that is equal to another string concatenated with itse

Answer 1

The first method above is for a single character. This one is for a string of characters. It could be used for a single character too but has more overhead.

+ (NSString*)stringWithRepeatString:(char*)characters times:(unsigned int)repetitions;
{
    unsigned int stringLength = strlen(characters);
    unsigned int repeatStringLength = stringLength * repetitions + 1;

    char repeatString[repeatStringLength];

    for (unsigned int i = 0; i < repetitions; i++) {
        unsigned int pointerPosition = i * repetitions;
        memcpy(repeatString + pointerPosition, characters, stringLength);       
    }

    // Set terminating null
    repeatString[repeatStringLength - 1] = 0;

    return [NSString stringWithCString:repeatString];
}