多线程公平抢票模拟：如何确保 100 个人抢购 10 张票时，每个人都有公平的机会？

import java.util.concurrent.ConcurrentHashSet;
import java.util.concurrent.atomic.AtomicInteger;
import java.util.concurrent.locks.ReentrantLock;

public class FairTicketBooking {
    private static final AtomicInteger tickets = new AtomicInteger(10);
    private static final ConcurrentHashSet<String> bookedTickets = new ConcurrentHashSet<>();
    private static final ReentrantLock lock = new ReentrantLock(true); // 公平锁

    private static void tryBookTicket(String name) {
        lock.lock();
        try {
            if (tickets.get() > 0) {
                bookedTickets.add(name);
                tickets.decrementAndGet();
                System.out.println("票已预订，预订人：" + name);
            } else {
                System.out.println("票已售罄，预订人：" + name);
            }
        } finally {
            lock.unlock();
        }
    }

    public static void main(String[] args) {
        // 创建 100 个线程来模拟抢票
        for (int i = 0; i < 100; i++) {
            new Thread(() -> tryBookTicket("Thread-" + i)).start();
        }
    }
}