MultiProcessingExercise2
java
package MultiProcessingExercise120240814;
import java.util.ArrayList;
import java.util.Collections;
public class MultiProcessingExercise1 {
public static void main(String[] args) {
// 需求:
// 在此次抽奖过程中,抽奖箱1总共产生了6个奖项,分别为:10,20,100,500,2,300
// 最高奖项为300元,总计额为932元
// 在此次抽奖过程中,抽奖箱2总共产生了6个奖项,分别为:5,50,200,800,80,700
// 最高奖项为800元,总计额为1835元
// 在此次抽奖过程中,抽奖箱2中产生了最大奖项,该奖项金额为800元
ArrayList<Integer> pool = new ArrayList<>();
for (int i = 0; i < 1000; i++) {
pool.add(0);
}
Collections.addAll(pool, 10,5,20,50,100,200,500,800,2,80,300,700);
Lottery lottery = new Lottery(pool);
Thread thread1 = new Thread(lottery, "抽奖箱1");
Thread thread2 = new Thread(lottery, "抽奖箱2");
thread1.start();
thread2.start();
}
}
Lottery
java
package MultiProcessingExercise120240814;
import java.util.ArrayList;
import java.util.Collections;
import java.util.concurrent.locks.ReentrantLock;
public class Lottery implements Runnable{
// 创建奖池
private ArrayList<Integer> pool;
// 构造方法初始化奖池
public Lottery(ArrayList<Integer> pool) {
this.pool = pool;
}
// 创建两个抽奖箱便于统计两个抽奖箱的奖项
private ArrayList<Integer> list1 = new ArrayList<>();
private ArrayList<Integer> list2 = new ArrayList<>();
// 创建锁
private final ReentrantLock lock = new ReentrantLock();
@Override
public void run() {
while (true) {
lock.lock();
try {
if (pool.isEmpty()) {
// 此时已经奖池已经空了,所以说抽奖完成,可以输出了
int maxAward1 = Collections.max(list1);
int maxAward2 = Collections.max(list2);
if ("抽奖箱1".equals(Thread.currentThread().getName())) {
System.out.println(Thread.currentThread().getName() + "中的最大奖是" + maxAward1);
System.out.println(Thread.currentThread().getName() + ": " + list1);
} else {
System.out.println(Thread.currentThread().getName() + "中的最大奖是" + maxAward2);
System.out.println(Thread.currentThread().getName() + ": " + list2);
}
if (maxAward1 > maxAward2) {
System.out.println("抽奖箱1有更大的奖项------------" + maxAward1);
} else {
System.out.println("抽奖箱2有更大的奖项------------" + maxAward2);
}
break;
} else {
// 此时奖池还没空,继续抽奖
try {
Thread.sleep(1);
} catch (InterruptedException e) {
e.printStackTrace();
}
Collections.shuffle(pool);
int prize = pool.removeFirst();
if (prize != 0) {
if (Thread.currentThread().getName().equals("抽奖箱1")) {
list1.add(prize);
} else {
list2.add(prize);
}
}
}
} finally {
lock.unlock();
}
}
}
}
//import java.util.ArrayList;
//import java.util.Collections;
//import java.util.concurrent.locks.ReentrantLock;
//
//public class Lottery implements Runnable {
// private ArrayList<Integer> pool;
// private ArrayList<Integer> list1 = new ArrayList<>();
// private ArrayList<Integer> list2 = new ArrayList<>();
// private final ReentrantLock lock = new ReentrantLock();
//
// public Lottery(ArrayList<Integer> pool) {
// this.pool = pool;
// }
//
// @Override
// public void run() {
// while (true) {
// lock.lock();
// try {
// if (pool.isEmpty()) {
// break;
// }
// Collections.shuffle(pool);
// int prize = pool.removeFirst();
// if (Thread.currentThread().getName().equals("抽奖箱1")) {
// list1.add(prize);
// } else {
// list2.add(prize);
// }
// } finally {
// lock.unlock();
// }
// try {
// Thread.sleep(10);
// } catch (InterruptedException e) {
// e.printStackTrace();
// }
// }
//
// lock.lock();
// try {
// int maxAward1 = list1.isEmpty() ? 0 : Collections.max(list1);
// int maxAward2 = list2.isEmpty() ? 0 : Collections.max(list2);
// if ("抽奖箱1".equals(Thread.currentThread().getName())) {
// System.out.println(Thread.currentThread().getName() + "中的最大奖是" + maxAward1);
// System.out.println(Thread.currentThread().getName() + ": " + list1);
// } else {
// System.out.println(Thread.currentThread().getName() + "中的最大奖是" + maxAward2);
// System.out.println(Thread.currentThread().getName() + ": " + list2);
// }
// if (maxAward1 > maxAward2) {
// System.out.println("抽奖箱1有更大的奖项------------" + maxAward1);
// } else {
// System.out.println("抽奖箱2有更大的奖项------------" + maxAward2);
// }
// } finally {
// lock.unlock();
// }
// }
//}