一开始,由于队列是空的,所以输出 “Queue is empty.”,然后在入队一个元素后,输出 “Queue is not empty.”。 关键点解释: Count属性用于获取队列中的元素数量。 判断队列是否为空可以通过检查Count是否等于0来实现。 队列为空时,通常表示没有待处理的元素。 2.3 清空队列 在C#中,可以使用Clear方法来清空队列中...
*/ElementTPdequeue(QUEUEqu){ElementTP element;position first,newFirst;if(is_null(qu)){printf("dequeue() on an empty queue");exit(1);}else{first=qu->next;element=first->element;newFirst=first->next;qu->next=newFirst;free(first);returnelement;}}/* * check: queue is empty? */intis_nul...
The Contains method is used to show that the string "four" is in the first copy of the queue, after which the Clear method clears the copy and the Count property shows that the queue is empty. C# Copy Run using System; using System.Collections.Generic; class Example { public static vo...
Empty—Indicates if queue is empty 1|0 Full—Indicates if queue is full 1|0 Num—Track number of elements in queue scalar Parameters expand all Register size—Number of entries FIFO register can hold 8 (default) | positive integer Trigger type—Type of trigger event for Push, Pop, and Rst...
// cliext_queue_const_reference.cpp // compile with: /clr #include "pch.h" #include <cliext/queue> typedef cliext::queue<wchar_t> Myqueue; int main() { Myqueue c1; c1.push(L'a'); c1.push(L'b'); c1.push(L'c'); // display contents "a b c" for (; !c1.empty(); ...
5finalReentrantLock takeLock =this.takeLock;6takeLock.lockInterruptibly();7try{8while(count.get() == 0) {9notEmpty.await();10}11x =dequeue();12c =count.getAndDecrement();13if(c > 1)14notEmpty.signal();15}finally{16takeLock.unlock();17}18if(c ==capacity)19signalNotFull();20...
TheContainsmethod is used to show that the string "four" is in the first copy of the queue, after which theClearmethod clears the copy and theCountproperty shows that the queue is empty. C# usingSystem;usingSystem.Collections.Generic;classExample{publicstaticvoidDemo(System.Windows.Controls.Text...
isEmpty() 判断BlockingQueue里是否有对象,如果为空,返回true,如果不为空,返回false。 三、常见BlockingQueue 在了解了BlockingQueue的基本功能后,让我们来看看BlockingQueue家庭大致有哪些成员? 1. ArrayBlockingQueue 基于数组的阻塞队列实现,在ArrayBlockingQueue内部,维护了一个定长数组,以便缓存队列中的数据对象,这是...
isEmpty(检查是否为空):判断队列是否为空。 isFull(检查是否已满):对于固定大小的队列,判断队列是否已满。 Size(获取长度):返回队列中的元素数量。 二、队列的实现 队列可以通过多种方式实现,包括数组、链表甚至是循环队列。每种实现都有其优缺点,适用于不同的应用场景。 1. 数组实现 使用数组实现队列是最直观...
if (flag == true && !sta_char.empty()) { //多余左括号 flag = false; } return flag; } }; int main() { CExpress c1(")[]"); CExpress c2("([]"); CExpress c3("()["); CExpress c4("([]())"); c1.IsValid() == true ? cout << "c1 is right" << endl : cout <...