input: 
  def reverse_array(arr: List[int]) -> List[int]:
    """ Reverses the order of the values in a given array of integers.
    >>> 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