import java.util.*;
/*
* public class ListNode {
* int val;
* ListNode next = null;
* public ListNode(int val) {
* this.val = val;
* }
* }
*/
public class Solution {
/**
* 代码中的类名、方法名、参数名已经指定,请勿修改,直接返回方法规定的值即可
*
*
* @param head ListNode类
* @return ListNode类
*/
public ListNode middleNode(ListNode head) {
// write code here
ArrayList<ListNode> arr = new ArrayList<>();
ListNode node = head;
while (null != node) {
arr.add(node);
node = node.next;
}
return arr.get(arr.size() / 2);
}
}