import java.util.*; public class Solution { /** * @param head ListNode类 * @param k int整型 3 * * 1 head temp * 2 * 3 temp spiltNode * * 4 temp isAddList * 5 * 6 * * 7 * 8 * @return ListNode类 */ public ListNode reverseKGroup(ListNode head, int k) { if (head == null || head.next == null || k == 1) { ret...