def test(nums):
head = array_to_nodes(nums)
return nodes_to_array(swap_pairs(head))
def test(l1, l2):
head1 = array_to_nodes(l1)
head2 = array_to_nodes(l2)
result = merge_two_lists(head1, head2)
return nodes_to_array(result)
def test(array, k):
head = array_to_nodes(array)
result = reverse_k_group(head, k)
return nodes_to_array(result)
def test(nums, n):
head = array_to_nodes(nums)
result = remove_nth_from_end(head, n)
return nodes_to_array(result)
def test(nums_list):
lists = list()
for nums in nums_list:
lists.append(array_to_nodes(nums))
return nodes_to_array(merge_k_lists(lists))