多级反馈队列调度算法java

以下是Java实现多级反馈队列调度算法的示例代码：

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

public class MultilevelFeedbackQueue {
    // 定义三个队列
    private Queue<Process> queue1 = new LinkedList<>();
    private Queue<Process> queue2 = new LinkedList<>();
    private Queue<Process> queue3 = new LinkedList<>();

    // 定义时间片大小和时间片计数器
    private int timeSlice1 = 2;
    private int timeSlice2 = 4;
    private int timeSlice3 = 8;
    private int timeCount = 0;

    // 添加进程到队列1
    public void addProcess(Process process) {
        queue1.offer(process);
    }

    // 执行调度
    public void schedule() {
        while (!queue1.isEmpty() || !queue2.isEmpty() || !queue3.isEmpty()) {
            if (!queue1.isEmpty()) {
                Process process = queue1.poll();
                if (process.getTimeNeeded() <= timeSlice1) {
                    System.out.println("Process " + process.getName() + " finished.");
                } else {
                    process.setTimeNeeded(process.getTimeNeeded() - timeSlice1);
                    queue2.offer(process);
                }
            } else if (!queue2.isEmpty()) {
                Process process = queue2.poll();
                if (process.getTimeNeeded() <= timeSlice2) {
                    System.out.println("Process " + process.getName() + " finished.");
                } else {
                    process.setTimeNeeded(process.getTimeNeeded() - timeSlice2);
                    queue3.offer(process);
                }
            } else if (!queue3.isEmpty()) {
                Process process = queue3.poll();
                if (process.getTimeNeeded() <= timeSlice3) {
                    System.out.println("Process " + process.getName() + " finished.");
                } else {
                    process.setTimeNeeded(process.getTimeNeeded() - timeSlice3);
                    queue3.offer(process);
                }
            }
            timeCount++;
            if (timeCount % 10 == 0) {
                // 每10个时间片将队列2和队列3中的进程移到队列1中
                while (!queue2.isEmpty()) {
                    queue1.offer(queue2.poll());
                }
                while (!queue3.isEmpty()) {
                    queue1.offer(queue3.poll());
                }
            }
        }
    }
}

class Process {
    private String name;
    private int timeNeeded;

    public Process(String name, int timeNeeded) {
        this.name = name;
        this.timeNeeded = timeNeeded;
    }

    public String getName() {
        return name;
    }

    public int getTimeNeeded() {
        return timeNeeded;
    }

    public void setTimeNeeded(int timeNeeded) {
        this.timeNeeded = timeNeeded;
    }
}