输入一个链表的头节点,从尾到头反过来返回每个节点的值(用数组返回)。
示例 1:
输入:head = [1,3,2] 输出:[2,3,1]/**
* Definition for singly-linked list.
* public class ListNode {
* int val;
* ListNode next;
* ListNode(int x) { val = x; }
* }
*/
class Solution {
public int[] reversePrint(ListNode head) {
ListNode pre = null;
ListNode next = null;
ListNode cur = head;
int i = 0;
while(cur != null){
next = cur.next;
cur.next = pre;
pre = cur;
cur = next;
i++;
}
int[] help = new int[i];
for(int j = 0; j < i; j++){
help[j] = pre.val;
pre = pre.next;
}
return help;
}
}