@Test
public void Test1() {
ListNode[] lists = {};
ListNode actual = solution.mergeKLists(lists);
ListNode expected = null;
assertEquals(expected, actual);
}
@Test
public void Test4() {
ListNode h1 = ListNode.constructLinkedList(Arrays.asList(3));
ListNode h2 = ListNode.constructLinkedList(Arrays.asList(1));
ListNode[] lists = {h1, h2};
ListNode actual = solution.mergeKLists(lists);
ListNode expected = ListNode.constructLinkedList(Arrays.asList(1, 3));
assertTrue(ListNode.isSameList(actual, expected));
}
