摘要： package leetcode; //单链表类 public class ListNode { public int val; public ListNode next; public ListNode() {} ListNode(int val) { this.val = val; } List 阅读全文

摘要： 链表无头结点 /** * Definition for singly-linked list. * public class ListNode { * int val; * ListNode next; * ListNode() {} * ListNode(int val) { this.val = 阅读全文

摘要： 链表有头结点 package leetcode; public class demo_2 { public ListNode addTwoNumbers(ListNode l1, ListNode l2) { ListNode l =new ListNode(); ListNode temp =ne 阅读全文