(Objective-C) How to sort an array

Here is an example to sort an array:

- (NSArray *) sortArray:(NSArray *)array :(BOOL)inAscending {
  if (inAscending) {
      return [array sortedArrayUsingSelector:@selector(compare:)];
  }
  else {
      NSArray *ascendArray = [array sortedArrayUsingSelector:@selector(compare:)];
      return [[ascendArray reverseObjectEnumerator] allObjects];
  }
}