C# 中的 Queue.Dequeue 方法
csharpserver side programmingprogramming更新于 2025/8/31 21:22:17
C# 中的 Queue.Dequeue() 方法用于移除并返回队列开头的对象。
语法
语法如下 −
public virtual object Dequeue ();
示例
现在来看一个例子 −
using System;
using System.Collections.Generic;
public class Demo {
public static void Main() {
Queue<string> queue = new Queue<string>();
queue.Enqueue("A");
queue.Enqueue("B");
queue.Enqueue("C");
queue.Enqueue("D");
queue.Enqueue("E");
queue.Enqueue("F");
queue.Enqueue("G");
Console.WriteLine("Count of elements = "+queue.Count);
Console.WriteLine("Element at the beginning of queue = " + queue.Peek());
queue.Dequeue();
queue.Dequeue();
queue.Dequeue();
Console.WriteLine("Count of elements = "+queue.Count);
}
}
输出
这将产生以下输出 −
Count of elements = 7 Element at the beginning of queue = A Count of elements = 4
示例
现在让我们看另一个例子 −
using System;
using System.Collections.Generic;
public class Demo {
public static void Main() {
Queue<string> queue = new Queue<string>();
queue.Enqueue("Gary");
queue.Enqueue("Jack");
queue.Enqueue("Ryan");
queue.Enqueue("Kevin");
queue.Enqueue("Mark");
queue.Enqueue("Jack");
queue.Enqueue("Ryan");
queue.Enqueue("Kevin");
Console.Write("Count of elements = ");
Console.WriteLine(queue.Count);
Console.WriteLine("Queue...");
foreach(string i in queue) {
Console.WriteLine(i);
}
queue.Dequeue();
queue.Dequeue();
Console.WriteLine("Queue...UPDATED");
foreach(string i in queue) {
Console.WriteLine(i);
}
Console.Write("Count of elements (updated) = "+queue.Count);
queue.Clear();
Console.Write("
Count of elements (updated AGAIN) = ");
Console.WriteLine(queue.Count);
}
}
输出
这将产生以下输出 −
Count of elements = 8 Queue... Gary Jack Ryan Kevin Mark Jack Ryan Kevin Queue...UPDATED Ryan Kevin Mark Jack Ryan Kevin Count of elements (updated) = 6 Count of elements (updated AGAIN) = 0
