Java实现一个排序系统

package com.sortsystem;

/**
 * @ClassName User
 * @Description 排队的人
 * @Author Administrator
 * @Date 2019/5/30 21:10
 * @Version 1.0
 **/
public class User {
    private int Id;
    String name;
    int seq; // 排队的序号

    public User(int id, String name) {
        Id = id;
        this.name = name;
    }

    public int getId() {
        return Id;
    }

    public void setId(int id) {
        Id = id;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public int getSeq() {
        return seq;
    }

    public void setSeq(int seq) {
        this.seq = seq;
    }

    @Override
    public String toString() {
        return "User{" +
                "name='" + name + '\'' +
                ", seq=" + seq +
                '}';
    }
}

　　

排序系统

package com.sortsystem;

import java.util.Iterator;
import java.util.LinkedList;
import java.util.Queue;

/**
 * @ClassName SortSystem
 * @Description TODO
 * @Author Administrator
 * @Date 2019/5/30 20:52
 * @Version 1.0
 **/
public class SortSystem {
    Queue<User> queue = new LinkedList<>();

    /**
     * 入队
     * @param user
     */
    public void enQueue(User user) {
        queue.offer(user);
    }

    /**
     * 出队
     */
    public void deQueue() {
        if(queue.size() > 0) {
            queue.poll();
        }
        return;
    }

    /**
     * 某个人出队列
     * @param user
     */
    public void deQueue(User user) {
        queue.remove(user);
        updateSeq();
    }

    /**
     * 更新排号
     */
    public void updateSeq() {
        int i = 1;
        Iterator iterator = queue.iterator();
        while(iterator.hasNext()) {
            User u = (User)iterator.next();
            u.setSeq(i);
            i++;
        }
    }

    public void printList() {
        Iterator iterator = queue.iterator();
        while(iterator.hasNext()) {
            User u = (User)iterator.next();
            System.out.println(u);
        }
    }
}

　　

测试

package com.sortsystem;

/**
 * @ClassName Main
 * @Description 排序系统的主类
 * @Author Administrator
 * @Date 2019/5/30 21:07
 * @Version 1.0
 **/
public class Main {

    public static void main(String[] args) {
        SortSystem sortSystem = new SortSystem();
        User u01 = new User(1, "person01");
        User u02 = new User(2, "person02");
        User u03 = new User(3, "person03");
        User u04 = new User(4, "person04");
        User u05 = new User(5, "person05");
        User u06 = new User(6, "person06");
        sortSystem.enQueue(u01);
        sortSystem.enQueue(u02);
        sortSystem.enQueue(u03);
        sortSystem.enQueue(u04);
        sortSystem.enQueue(u05);
        sortSystem.enQueue(u06);

        /**
         * 更新排序
         */
        sortSystem.updateSeq();
        sortSystem.printList();


        /**
         * 队列中某一个人离开
         */
        sortSystem.deQueue(u02);
        sortSystem.printList();

    }
}