input: Write a python function to print an array in reverse order.
  assert print_reverse_array([1, 2, 3, 4]) == [4, 3, 2, 1]
  assert print_reverse_array(['a', 'b', 'c', 'd']) == ['d', 'c', 'b', 'a']
  assert print_reverse_array([10, 20, 30]) == [30, 20, 10]
output: def print_reverse_array(arr):
      return arr[::-1]