/*
 * File: ListNode.swift
 * Created Time: 2023-01-02
 * Author: nuomi1 (nuomi1@qq.com)
 */

public class ListNode {
    public var val: Int // 结点值
    public var next: ListNode? // 后继结点引用

    public init(x: Int) {
        val = x
    }
}