java用内部类构造链表实现相关方法

import com.sun.corba.se.impl.orbutil.graph.Node;

/**
 * Created by junyi.pc on 2017/1/25.
 */

public class Main {

    Node head=null;
    Node tail=null;
    class Node { //内部类
        int data;
        Node next;

        public Node(int data) {
            this.data = data;
        }
    }
        public void addNode(int data){//增加节点
            Node node=new Node(data);
            if(head==null){
                head=node;
                tail=node;
            }
            else{
                Node temp=head;
                while(temp.next!=null){
                    temp=temp.next;
                }
                temp.next=node;
            }

        }
        public void deleteNode(int data){//删除节点
            Node tempNode=head;
            if(head==null){

            }
            if(tempNode.data==data){

                head=tempNode.next;//要删了第一个节点，就要把头结点后移
                if(tempNode.next==null){//这里特别考虑，如果是只有一个节点，要把尾结点变null
                    tail=null;
                }

                delete(tempNode);//最后删了这个点
            }
            while(tempNode.next!=null&&tempNode.next.data!=data)//遍历链表找到第一个值与x相等的节点,temp表示这个节点的上一个节点
            {
                tempNode=tempNode.next;
            }
            if(tempNode.next==null) return;//如果没有找到则返回
            if(tempNode==tail)//如果找到的时候尾节点
            {
                tail=tempNode;//把尾节点指向他的上一个节点
                delete(tempNode.next);//删除尾节点
                tempNode.next=null;
            }
            else//如果不是尾节点,如图4
            {
               Node node=tempNode.next;//用临时节点node指向要删除的节点
                tempNode.next=tempNode.next;//要删除的节点的上一个节点指向要删除节点的下一个节点
                delete(node);//删除节点
                node=null;
            }
        }
        public void traversal() { //遍历链表
            Node tempNode = head;
            while ( tempNode != null) {
                System.out.println( tempNode.data);
                tempNode =  tempNode.next;
            }
        }
        public void insert(int data,Node lastNode){
            if(lastNode==null){
              //一个节点都没有
            }
            else{
                Node node=new Node(data);//新节点来了怎么得也得分配空间吧
                node.next=lastNode.next;
                lastNode.next=node;
                if(node.next==null){//如果恰好这小子是尾节点
                     tail=node;//设置为尾节点
                }

            }


        }

        public void delete(Node node){
            //
        }
        public Node ReverseIteratively() {//链表反转
            Node pReversedHead = head;
            Node pNode = head;
            Node pPrev = null;
            while (pNode != null) {
                Node pNext = pNode.next;
                if (pNext == null) {
                    pReversedHead = pNode;
                }
                pNode.next = pPrev;
                pPrev = pNode;
                pNode = pNext;
            }
            this.head = pReversedHead;
            return this.head;
        }
         //删除重复节点
        public void deleteDuplecate(Node head) {
            Node p = head;
            while (p != null) {
                Node q = p;
                while (q.next != null) {
                    if (p.data == q.next.data) {
                        q.next = q.next.next;
                    } else
                        q = q.next;
                }
                p = p.next;
            }

        }
        public int length() {//返回链表长度
            int length = 0;
            Node tempNode = head;
            while (tempNode != null) {
                length++;
                tempNode = tempNode.next;
            }
            return length;
        }

        public Node orderList() {
            Node nextNode = null;
            int tmp = 0;
            Node curNode = head;//开始那个点
            //类似于冒泡排序
            while (curNode.next != null) {
                nextNode = curNode.next;
                while (nextNode != null) {
                    if (curNode.data > nextNode.data) {
                        tmp = curNode.data;  //交换
                        curNode.data = nextNode.data;
                        nextNode.data = tmp;
                    }
                    nextNode = nextNode.next;//相当于j++
                }
                curNode = curNode.next;//相当于i++
            }
            return head;
        }

    public static void main(String[] args){

        Main list = new  Main();
        list.addNode(1);
        list.addNode(2);
        list.addNode(3);
        System.out.println("linkLength:" + list.length());
        list.traversal();
        list.addNode(4);
        list.traversal();
    }
}

C:\java\jdk1.8.0_25\bin\java -Didea.launcher.port=7535 "-Didea.launcher.bin.path=C:\Program Files (x86)\JetBrains\IntelliJ IDEA Community Edition 2016.1\bin" -Dfile.encoding=UTF-8 -classpath "C:\java\jdk1.8.0_25\jre\lib\charsets.jar;C:\java\jdk1.8.0_25\jre\lib\deploy.jar;C:\java\jdk1.8.0_25\jre\lib\ext\access-bridge-64.jar;C:\java\jdk1.8.0_25\jre\lib\ext\cldrdata.jar;C:\java\jdk1.8.0_25\jre\lib\ext\dnsns.jar;C:\java\jdk1.8.0_25\jre\lib\ext\jaccess.jar;C:\java\jdk1.8.0_25\jre\lib\ext\jfxrt.jar;C:\java\jdk1.8.0_25\jre\lib\ext\localedata.jar;C:\java\jdk1.8.0_25\jre\lib\ext\nashorn.jar;C:\java\jdk1.8.0_25\jre\lib\ext\sunec.jar;C:\java\jdk1.8.0_25\jre\lib\ext\sunjce_provider.jar;C:\java\jdk1.8.0_25\jre\lib\ext\sunmscapi.jar;C:\java\jdk1.8.0_25\jre\lib\ext\sunpkcs11.jar;C:\java\jdk1.8.0_25\jre\lib\ext\zipfs.jar;C:\java\jdk1.8.0_25\jre\lib\javaws.jar;C:\java\jdk1.8.0_25\jre\lib\jce.jar;C:\java\jdk1.8.0_25\jre\lib\jfr.jar;C:\java\jdk1.8.0_25\jre\lib\jfxswt.jar;C:\java\jdk1.8.0_25\jre\lib\jsse.jar;C:\java\jdk1.8.0_25\jre\lib\management-agent.jar;C:\java\jdk1.8.0_25\jre\lib\plugin.jar;C:\java\jdk1.8.0_25\jre\lib\resources.jar;C:\java\jdk1.8.0_25\jre\lib\rt.jar;C:\Users\junyi.pc\Desktop\client\out\production\client;C:\Program Files (x86)\JetBrains\IntelliJ IDEA Community Edition 2016.1\lib\idea_rt.jar" com.intellij.rt.execution.application.AppMain Main
linkLength:3
1
2
3
1
2
3
4

Process finished with exit code 0