import java.util.*; public class Solution { public ListNode EntryNodeOfLoop(ListNode pHead) { //快慢指针不做介绍,可以去做判读是否有结点的题 ListNode fast = pHead; ListNode slow = pHead; //fast与slow相遇后,newnode与slow同时遍历,相遇的结点便是入口 ListNode newnode = pHead; ListNode rslt = null...