def test_case_5(self):
arr = [10, 9, 8, 7, 6, 5, 4, 3, 2, 1]
expected = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
actual = pancake_sort(arr)
self.assertEqual(expected, actual)
def test_case_1(self):
arr = [1]
expected = [1]
actual = pancake_sort(arr)
self.assertEqual(expected, actual)
def test_case_4(self):
arr = [3, 1, 2, 4, 6, 5]
expected = [1, 2, 3, 4, 5, 6]
actual = pancake_sort(arr)
self.assertEqual(expected, actual)