def test_1(self):
string = "a"
array_string = [str(k) for k in list(string)]
result = "".join(max_palindrom(array_string))
self.assertEqual(result, "a")
def test_5(self):
string = "аfроaзаупаланалаsdпуаilзора"
array_string = [str(k) for k in list(string)]
result = "".join(max_palindrom(array_string))
self.assertEqual(result, "арозаупаланалапуазора")
