def test_reduce4(self): result = reduce("111") self.assertEqual("111", result)
def test_reduce5(self): result = reduce("11221") self.assertEqual("112", result)
def test_reduce5(self): result = reduce("1234xx") self.assertEqual("x", result)
def test_reduce4(self): result = reduce("91212129") self.assertEqual("9", result)
def test_reduce3(self): result = reduce("1234") self.assertEqual("", result)