def test_get_kth_from_front(self, datas, k, expected):
ll = LinkedList()
ll.bulk_push_back(datas)
actual = ll.get_kth_from_front(k)
assert actual == expected
def test_remove_duplicate(self, datas, expected):
l1 = LinkedList()
l1.bulk_push_back(datas)
l1.remove_duplicate()
assert repr(l1) == expected
l2 = LinkedList()
l2.bulk_push_back(datas)
l2.remove_duplicate_space_optimize()
assert repr(l2) == expected