package jianzhiOffer;/** * 输入一个链表,反转链表后,输出链表的所有元素。 * @author user * 思路:使链表的所有节点都指向上一个结点 */public class ch15 { public ListNode ReverseList(ListNode head) { ListNode pre = null; ListNode next = null; while(head != null) { next = head.next; head.next = pre; pre = head; head = next; } return pre; }}