Write a function compare that prints the value 1 if $$a > b$$, the value 0 if $$a = b$$, and the value -1 if $$a < b$$. Fill out the body of the function below, so that your implementation survives the doctest.

def compare(a, b):
    """
    >>> compare(5, 4)
    1
    >>> compare(7, 7)
    0
    >>> compare(2, 3)
    -1
    >>> compare(42, 1)
    1
    """