链接:https://www.nowcoder.com/acm/contest/143/J来源:牛客网 There are n students going to travel. And hotel has two types room:double room and triple room. The price of a double room is p2 and the price of a triple room is p3 Now you need to calulate the min
前篇博客LZ已经分析了ReentrantLock的lock()实现过程,我们了解到lock实现机制有公平锁和非公平锁,两者的主要区别在于公平锁要按照CLH队列等待获取锁,而非公平锁无视CLH队列直接获取锁.但是对于unlock()而已,它是不分为公平锁和非公平锁的. public void unlock() { sync.release(1); } public final boolean release(int arg) { if (tryRelease(arg)) { Node h = he