C#内置队列类Queue用法实例

本文实例讲述了C#内置队列类Queue用法。分享给大家供大家参考。具体分析如下：

这里详细演示了C#内置的队列如何进行添加，移除等功能。

using System;
using System.Collections.Generic;
class Example
{
 public static void Main()
 {
  Queue numbers = new Queue();
  numbers.Enqueue("one");
  numbers.Enqueue("two");
  numbers.Enqueue("three");
  numbers.Enqueue("four");
  numbers.Enqueue("five");
  // A queue can be enumerated without disturbing its contents.
  foreach( string number in numbers )
  {
   Console.WriteLine(number);
  }
  Console.WriteLine("nDequeuing '{0}'", numbers.Dequeue());
  Console.WriteLine("Peek at next item to dequeue: {0}", 
   numbers.Peek());
  Console.WriteLine("Dequeuing '{0}'", numbers.Dequeue());
  // Create a copy of the queue, using the ToArray method and the
  // constructor that accepts an IEnumerable.
  Queue queueCopy = new Queue(numbers.ToArray());
  Console.WriteLine("nContents of the first copy:");
  foreach( string number in queueCopy )
  {
   Console.WriteLine(number);
  }
  // Create an array twice the size of the queue and copy the
  // elements of the queue, starting at the middle of the 
  // array. 
  string[] array2 = new string[numbers.Count * 2];
  numbers.CopyTo(array2, numbers.Count);
  // Create a second queue, using the constructor that accepts an
  // IEnumerable(Of T).
  Queue queueCopy2 = new Queue(array2);
  Console.WriteLine("nContents of the second copy, with duplicates and nulls:");
  foreach( string number in queueCopy2 )
  {
   Console.WriteLine(number);
  }
  Console.WriteLine("nqueueCopy.Contains("four") = {0}", 
   queueCopy.Contains("four"));
  Console.WriteLine("nqueueCopy.Clear()");
  queueCopy.Clear();
  Console.WriteLine("nqueueCopy.Count = {0}", queueCopy.Count);
 }
}

希望本文所述对大家的C#程序设计有所帮助。