Generate a ordinal suffix for a given int in Objective-C

ordinal date suffix

- (NSString*)getOrdinalSuffix: (int)number {
	
	NSArray *suffixLookup = [NSArray arrayWithObjects:@"th",@"st",@"nd",@"rd",@"th",@"th",@"th",@"th",@"th",@"th", nil];

	if (number % 100 >= 11 && number % 100 <= 13) {
		return [NSString stringWithFormat:@"%d%@", number, @"th"];
	}

	return [NSString stringWithFormat:@"%d%@", number, [suffixLookup objectAtIndex:(number % 10)]];
}