input: 
  def reverse_array(arr: List[int]) -> List[int]:
      """Reverses the order of the values in a given array of integer values.
      >>> reverse_array([1, 2, 3, 4, 5])
      [5, 4, 3, 2, 1]
      >>> reverse_array([10, 20, 30])
      [30, 20, 10]
      """
      return arr[::-1]  # Returns a slice of the list in reverse order
  
output:     return arr[::-1]  # Returns a slice of the list in reverse order