import java.util.*; /* public class ListNode { int val; ListNode next = null; ListNode(int val) { this.val = val; } }*/ public class Solution { public ListNode FindFirstCommonNode(ListNode pHead1, ListNode pHead2) { ListNode node1 = pHead1; ListNode node2 = pHead2; //创建list 用来存储第一个链表的所有节点 ArrayList&...