📜  C#|将对象添加到队列的末尾–入队操作

📅  最后修改于: 2021-05-30 00:44:44             🧑  作者: Mango

队列代表对象的先进先出集合。当您需要对项目进行先进先出的访问时,可以使用它。当您在列表中添加项目时,它称为enqueue ,而当您删除项目时,它称为dequeue

Queue .Enqueue(T)方法用于将对象添加到Queue 的末尾。

特性:

  • Enqueue将元素添加到队列的末尾。
  • 出队从队列开始处删除最旧的元素。
  • Peek返回位于队列开始处的最旧元素,但不会将其从队列中删除。
  • 队列的容量是队列可以容纳的元素数。
  • 随着元素添加到队列中,通过重新分配内部数组,容量会根据需要自动增加。
  • 队列接受null作为引用类型的有效值,并允许重复的元素。

句法 :

void Enqueue(object obj);

Enqueue()方法将值插入到队列的末尾。

例子:

// C# code to add an object
// to the end of the Queue
using System;
using System.Collections.Generic;
  
class GFG {
  
    // Driver code
    public static void Main()
    {
  
        // Creating a Queue of strings
        Queue myQueue = new Queue();
  
        // Inserting the elements into the Queue
        myQueue.Enqueue("one");
  
        // Displaying the count of elements
        // contained in the Queue
        Console.Write("Total number of elements in the Queue are : ");
  
        Console.WriteLine(myQueue.Count);
  
        myQueue.Enqueue("two");
  
        // Displaying the count of elements
        // contained in the Queue
        Console.Write("Total number of elements in the Queue are : ");
  
        Console.WriteLine(myQueue.Count);
  
        myQueue.Enqueue("three");
  
        // Displaying the count of elements
        // contained in the Queue
        Console.Write("Total number of elements in the Queue are : ");
  
        Console.WriteLine(myQueue.Count);
  
        myQueue.Enqueue("four");
  
        // Displaying the count of elements
        // contained in the Queue
        Console.Write("Total number of elements in the Queue are : ");
  
        Console.WriteLine(myQueue.Count);
  
        myQueue.Enqueue("five");
  
        // Displaying the count of elements
        // contained in the Queue
        Console.Write("Total number of elements in the Queue are : ");
  
        Console.WriteLine(myQueue.Count);
  
        myQueue.Enqueue("six");
  
        // Displaying the count of elements
        // contained in the Queue
        Console.Write("Total number of elements in the Queue are : ");
  
        Console.WriteLine(myQueue.Count);
    }
}
输出:
Total number of elements in the Queue are : 1
Total number of elements in the Queue are : 2
Total number of elements in the Queue are : 3
Total number of elements in the Queue are : 4
Total number of elements in the Queue are : 5
Total number of elements in the Queue are : 6

参考:

  • https://docs.microsoft.com/zh-cn/dotnet/api/system.collections.generic.queue-1.enqueue?view=netframework-4.7.2#System_Collections_Generic_Queue_1_Enqueue__0_