牛客网-从头到尾打印链表

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