/**
*    public class ListNode {
*        int val;
*        ListNode next = null;
*
*        ListNode(int val) {
*            this.val = val;
*        }
*    }
*
*/
import java.util.ArrayList;
public class Solution {
    public ArrayList<Integer> printListFromTailToHead(ListNode listNode) {
        ArrayList<Integer> list = new ArrayList<Integer>();
        
        if(listNode == null){
            return list;
        }
        
        ListNode pre = null;
        ListNode next = null;
        
        while(listNode!=null){
            next = listNode.next;
            listNode.next = pre;
            pre = listNode;
            listNode = next;
        }
        
        while(pre!=null){
            list.add(pre.val);
            pre = pre.next;
        }
        
        return list;
         
    }
}