java数据结构-双向循环链表测试

package com.node;

/**
 * @auther 付强
 * @date 2020/2/14 - 13:46
 */
public class TestDoubleNode {
    public static void main(String[] args) {
        //创建节点
        DoubleNode n1 = new DoubleNode(1);
        DoubleNode n2 = new DoubleNode(2);
        DoubleNode n3 = new DoubleNode(3);
        DoubleNode n4 = new DoubleNode(4);
        //追加节点
        n1.after(n2);
        n2.after(n3);
        n3.after(n4);
        //查看上一个，自己，下一个内容
        System.out.println(n2.pre().getData());
        System.out.println(n2.getData());
        System.out.println(n2.next().getData());
    }
}