input: 
  def sort_array(arr: List[int]) -> None:
      """Sorts and prints the elements of an array of integers.
      >>> sort_array([17, 41, 5, 22, 54, 6, 29, 3, 13])
      [3, 5, 6, 13, 17, 22, 29, 41, 54]
      """
      arr.sort()
      print(arr)
  
output:     arr.sort()
      print(arr)