C#实现队列

  using   System;   
    
  namespace   QueueWithCSharp   
  {   
          /**////   <summary>   
          ///   LinkList   的摘要说明。   
          ///   </summary>   
          ///     
    
          public   class   Node   
          {   
                  public   int   data;   
                  public   Node   prior,   next;   
                    
                  public   Node()   
                  {   
                          prior   =   null;   
                          next   =   null;   
                          data   =   0;   
                  }   
          }   
    
          public   class   Queue   
          {   
                  Node   head,   rear;   
                  int   length;   
    
                  public   int   Length   
                  {   
                          get   
                          {   
                                  return   length;   
                          }   
                  }                 
      
                  public   Queue()   
                  {   
                          //   
                          //   TODO:   在此处添加构造函数逻辑   
                          //   
                          head   =   rear   =   null;   
                          length   =   0;   
                  }   
    
                  public   void   EnQueue(int   data)   //   追加   
                  {   
                          if   (rear   ==   null)   
                          {   
                                  rear   =   new   Node();   
                                  head   =   rear;   
                                  rear.data   =   data;   
                                  length   ++;   
                          }   
                          else   
                          {   
                                  rear.next   =   new   Node();   
                                  rear.next.data   =   data;   
                                  length   ++;   
                                  rear   =   rear.next;   
                          }   
                  }   
    
                  public   int   DeQueue()   
                  {   
                          if   (length   <=   0)   
                          {   
                                  rear   =   head   =   null;   
                                  Console.WriteLine("队列中没有元素");   
                                  return   0;   
                          }   
                          int   data   =   head.data;   
                          head   =   head.next;   
                          length   --;   
                          return   data;   
                  }   
    
                  public   void   Print()   
                  {   
                          string   str   =   "";   
                          Node   current   =   head;   
                          while   (current   !=   null)   
                          {   
                                  if   (current   ==   head)   
                                  {   
                                          str   +=     current.data.ToString();   
                                  }   
                                  else   
                                  {   
                                          str   +=   "   <-   "   +   current.data.ToString();   
                                  }   
                                  current   =   current.next;   
                          }//   end   while   current   
                          Console.WriteLine(str);   
                  }   
          }   
  }