input: def print_reverse_array(arr: List[str]) -> None:
      """Prints out the given array in reverse order.
      >>> print_reverse_array(['apple', 'banana', 'cherry'])
      cherry
      banana
      apple
      >>> print_reverse_array(['dog', 'cat', 'bird'])
      bird
      cat
      dog
      """
output:     for item in reversed(arr):
          print(item)