磁盘调度Q-SCAN算法java实现

好的，我可以为您提供磁盘调度Q-SCAN算法的Java实现。Q-SCAN算法是一种磁盘调度算法，它可以优化磁盘的读写速度，提高系统的效率。以下是基于Java语言的Q-SCAN算法实现代码：

import java.util.*;

public class QSCAN {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        System.out.println("请输入磁盘访问序列，用空格隔开：");
        String s = sc.nextLine();
        String[] str = s.split(" ");
        int[] arr = new int[str.length];
        System.out.println("请输入磁头的起始位置：");
        int start = sc.nextInt();
        System.out.println("请输入磁道数：");
        int num = sc.nextInt();
        for (int i = 0; i < str.length; i++) {
            arr[i] = Integer.parseInt(str[i]);
        }
        Arrays.sort(arr);
        int index = 0, sum = 0, direction = 1;
        List<Integer> left = new ArrayList<>();
        List<Integer> right = new ArrayList<>();
        for (int i = 0; i < arr.length; i++) {
            if (arr[i] < start) {
                left.add(arr[i]);
            } else {
                right.add(arr[i]);
            }
        }
        while (left.size() > 0 || right.size() > 0) {
            if (direction == 1) {
                if (right.size() == 0) {
                    direction = -1;
                    continue;
                }
                int min = num + 1;
                for (int i = 0; i < right.size(); i++) {
                    if (right.get(i) < min) {
                        min = right.get(i);
                        index = i;
                    }
                }
                start = right.get(index);
                right.remove(index);
                sum += start;
            } else {
                if (left.size() == 0) {
                    direction = 1;
                    continue;
                }
                int max = -1;
                for (int i = 0; i < left.size(); i++) {
                    if (left.get(i) > max) {
                        max = left.get(i);
                        index = i;
                    }
                }
                start = left.get(index);
                left.remove(index);
                sum += start;
            }
        }
        System.out.println("磁盘移动总距离为：" + sum);
    }
}

您可以将上述代码复制到Java开发环境中进行编译和运行。在运行程序时，您需要输入磁盘访问序列、磁头的起始位置和磁道数等信息，程序将自动计算出磁盘移动的总距离，并将结果输出到屏幕上。