public class Pedestrian implements Runnable{ static int an,bn; static int count;
boolean as=false,bs=false;
public static void main(String [] args) { Pedestrian p=new Pedestrian(); }
public Pedestrian() {
Scanner inputa=new Scanner(System.in);
System.out.println("请输入在a方向的行人数目："); an=inputa.nextInt();
Scanner inputb=new Scanner(System.in);
System.out.println("请输入在b方向的行人数目："); bn=inputb.nextInt(); count=an+bn;
while(count>0) {
thread1 a=new thread1(this,"a"); a.start();
thread1 b=new thread1(this,"b"); b.start(); } }
class thread1 extends Thread {
public thread1(Runnable r, String name) { super(r, name); } }
public synchronized void run(){
thread1 t=(thread1)Thread.currentThread(); if (t.getName().equalsIgnoreCase("a") && an>0 && bs==false) {
as=true;
int i=(int)(Math.random()*100%an); if(iSystem.out.println("a方向上有"+i+"人过桥！"+" 还剩人数为："+an);
int n;
n=(int)(Math.random()*2);
System.out.println("a方向上新增人数："+n+" 现要过桥人数为："+(an+n)); an=an+n; if(an==0) {
System.out.println("a方向上的人已全过桥！");
}
as=false; } if (t.getName().equalsIgnoreCase("b") && bn>0 && as==false) {
bs=true;
int j=(int)(Math.random()*100%bn); if(jSystem.out.println("b方向上有"+j+"人过桥！"+"还剩人数为："+bn);
int m;
m=(int)(Math.random()*2);
System.out.println("b方向上新增人数："+m+" 现要过桥人数为："+(bn+m)); bn=bn+m; if(bn==0) {
System.out.println("b方向上的已全过桥！"); }
bs=false; }
count=an+bn; } }