标签：imp sys 优先 print scanner java compare his 更改
//进程一
public class Process1 {
public int name; //进程ID名
public int priority; //优先权数
public int cputime; //进程需要的时间
public String state; //进程状态
//设置 process类的构造方法
Process1(int i, int priority , int cputime , String state)
{
this.name = i;
this.priority = priority;
this.cputime = cputime;
this.state = state;
}
public String toString() {
return "进程名:" + name + " 优先级为:" + priority + " 需要运行的时间：" + cputime + " 进程状态:" + state;
}
}
//进程二
public class Process2 {
public int name;
public int needTime;
public int ocpTime;
public String state;
Process2(int i, int needTime , int ocpTime , String state)
{
this.name = i;
this.needTime = needTime;
this.ocpTime = ocpTime;
this.state = state;
}
public String toString() {
return "进程名:" + name + " 需要时间片:" + needTime + " 已占用时间片：" + ocpTime + " 进程状态:" + state;
}
}
//测试类
import java.util.Collections;
import java.util.Comparator;
import java.util.Scanner;
import java.util.concurrent.ThreadLocalRandom;
import java.util.LinkedList;
public class ProcessTest {
public static LinkedList<Process1> input1(){
LinkedList<Process1> l = new LinkedList<Process1>();
System.out.println("要创建进程数:");
Scanner s = new Scanner(System.in);
int num = s.nextInt();
for (int i = 1; i <= num; i++) {
ThreadLocalRandom ran = ThreadLocalRandom.current();
int a = ran.nextInt(10,20);
int b = ran.nextInt(1,20);
Process1 p = new Process1(i,a,b,"ready");
l.add(p);
}
s.close();
return l;
}
public static LinkedList<Process2> input2(){
LinkedList<Process2> l = new LinkedList<Process2>();
System.out.println("要创建进程数:");
Scanner s = new Scanner(System.in);
int num = s.nextInt();
for (int i = 1; i <= num; i++) {
ThreadLocalRandom ran = ThreadLocalRandom.current();
int a = ran.nextInt(10,20);
Process2 p = new Process2(i,a,0,"ready"); //
l.add(p);
}
s.close();
return l;
}
//比较器
class PriorityComparator implements Comparator<Process1> {
public int compare(Process1 p1, Process1 p2) {
if (p1.priority < p2.priority) {
return 1;
} else if (p1.priority > p2.priority) {
return -1;
} else {
return 0;
}
}
}
public void run1(){
LinkedList<Process1> l = ProcessTest.input1();
Collections.sort(l, new PriorityComparator());//排序
for(Process1 p:l) {
System.out.println(p);
}
System.out.println("===============================");
while(!l.isEmpty()) {
l.peek().state = "running";
for(Process1 p:l) {
System.out.println(p);
}
l.peek().priority -= 3;
l.peek().cputime -= 1;
l.peek().state = "ready";
Collections.sort(l, new PriorityComparator());
System.out.println("===============================");
for(int i = 0;i < l.size();i++) {
if(l.get(i).cputime<=0) {
l.get(i).state = "finish";
//System.out.println(l.get(i));
System.out.println("++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++");
System.out.println("结束进程："+l.get(i));
System.out.println("++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++");
l.remove(i);
}
}
}
System.out.println("End");
}
public void run2() {
LinkedList<Process2> l = ProcessTest.input2();
for(Process2 p:l) {
System.out.println(p);
}
System.out.println("===============================");
while(!l.isEmpty()) {
l.peek().state = "runnig";
for(Process2 p:l) {
System.out.println(p);
}
l.peek().state = "ready";
l.peek().needTime--;
l.peek().ocpTime++;
//更改队列元素顺序
Process2 temp = l.get(0);
for(int i =0;i < l.size()-1;i++) {
l.set(i, l.get(i+1));
}
l.set(l.size()-1,temp );
System.out.println("===============================");
for(int i = 0;i < l.size();i++) {
if(l.get(i).needTime<=0) {
l.get(i).state = "finish";
//System.out.println(l.get(i));
System.out.println("++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++");
System.out.println("结束进程："+l.get(i));
System.out.println("++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++");
l.remove(i);
}
}
}
System.out.println("END");
}
public static void main(String[] args){
ProcessTest pro = new ProcessTest();
System.out.println("输入“y”或“n”:");
Scanner s = new Scanner(System.in);
String cmd = s.next();
if(cmd.equals("y")) {
pro.run1();
}else if(cmd.equals("n")){
pro.run2();
}else {
System.out.println("输入非法，重新运行");
}
s.close();
}
}
标签：imp sys 优先 print scanner java compare his 更改
原文地址：https://www.cnblogs.com/cky-2907183182/p/11324192.html
