2023-9-25 JZ6 从头到尾打印链表

题目链接：从头到尾打印链表

import java.util.*;
/**
*    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> result = new ArrayList<Integer>();

        Stack<Integer> stack = new Stack<Integer>();
        while(listNode != null)
        {
            stack.push(listNode.val);
            listNode = listNode.next;
        }
        while(!stack.empty())
        {
            result.add(stack.pop());
        }

        return result;

    }
}