def test_merge_sort_in_place(self):
arr = random.sample(range_with_dupes, 5000)
self.assertEqual(merge_sort_in_place(arr, 0, len(arr) - 1), sorted(arr))
# times = 0.062, 0.065, 0.061
arr = random.sample(range(10000), 5000)
self.assertEqual(merge_sort_in_place(arr, 0, len(arr) - 1), sorted(arr))
# times = 0.083, 0.061, 0.066
arr = random.sample(range(100000), 10000)
self.assertEqual(merge_sort_in_place(arr, 0, len(arr) - 1), sorted(arr))
def test_in_place_merge_sort(self):
arr1 = [1, 5, 8, 4, 2, 9, 6, 0, 3, 7]
arr2 = []
arr3 = [2]
arr4 = [0, 1, 2, 3, 4, 5]
arr5 = random.sample(range(200), 50)
self.assertEqual(merge_sort_in_place(
arr1, 0, len(arr1)-1), [0, 1, 2, 3, 4, 5, 6, 7, 8, 9])
self.assertEqual(merge_sort_in_place(arr2, 0, len(arr2)-1), [])
self.assertEqual(merge_sort_in_place(arr3, 0, len(arr3)-1), [2])
self.assertEqual(merge_sort_in_place(
arr4, 0, len(arr4)-1), [0, 1, 2, 3, 4, 5])
self.assertEqual(merge_sort_in_place(
arr5, 0, len(arr5)-1), sorted(arr5))
def test_in_place_merge_sort(self):
for test_array in self.test_arrays:
arrayA = test_array()
arrayB = copy.copy(arrayA)
self.assertEqual(
merge_sort_in_place(arrayA, 0,
len(arrayA) - 1),
sorted(arrayB),
)