C# Queue.Enqueue()用法及代码示例

此方法用于将对象添加到队列的末尾。这属于System.Collections命名空间。该值可以为null，并且如果Count小于内部数组的容量，则此方法是O(1)操作。如果需要重新分配内部数组以容纳新元素，则此方法将成为O(n)操作，其中n是Count。

用法:

public virtual void Enqueue (object obj);

在这里，obj是添加到队列中的对象。

例：

// C# code to illustarte the  
// Queue.Enqueue() Method 
using System; 
using System.Collections; 
  
class GFG { 
  
    // Driver code 
    public static void Main() 
    { 
  
        // Creating a Queue 
        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/en-us/dotnet/api/system.collections.queue.enqueue?view=netframework-4.7.2

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注：本文由纯净天空筛选整理自Kirti_Mangal大神的英文原创作品 Queue.Enqueue() Method in C#。非经特殊声明，原始代码版权归原作者所有，本译文未经允许或授权，请勿转载或复制。