using System;

using System.Linq;

using System.Collections;

using System.Collections.Generic;

public class Program

{

    public static List<int> GetSample()

    {

        int[] arri = new int[] { 1,2,3,4,6,5 };

        return arri.ToList();

    }

    public static void QueueTest()

    {

        Queue<int> nqu = new Queue<int>();

        foreach (int elem in GetSample() )

        {

            nqu.Enqueue(elem);

        }

        Console.WriteLine("nqu.Count: {0}" , nqu.Count());

        Console.WriteLine("aggr: {0}",  nqu.Aggregate("",(acu,ato) => acu +";" + ato.ToString() ));  // doesnt empty the queue

        Console.WriteLine("nqu.Count: {0}" , nqu.Count());

        string stemp = "";

//      for(int ii = 0 ; ii<nqu.Count(); ii++)          // ? doesnt work properly? 

//      {

//          stemp = stemp + "; " + nqu.Dequeue().ToString();

//      }

//      Console.WriteLine("Dequeue: {0}" , stemp);

//      Console.WriteLine("nqu.Count: {0}" , nqu.Count());

        stemp = "";

        while(nqu.Count() > 0)

        {

            stemp = stemp + "; " + nqu.Dequeue().ToString(); 

        }

        Console.WriteLine("Dequeue with while: {0}" , stemp);

        Console.WriteLine("nqu.Count: {0}" , nqu.Count());

    }

​

    public static void StackTest()

    {

        Stack<int> nsta = new Stack<int>();

        foreach (int elem in GetSample() )

        {

            nsta.Push(elem);

        }

        Console.WriteLine("nsta.Count: {0}" , nsta.Count());

        Console.WriteLine("aggr: {0}",  nsta.Aggregate("",(acu,ato) => acu +";" + ato.ToString() ));  // doesnt empty the queue

        Console.WriteLine("nsta.Count: {0}" , nsta.Count());

        string stemp = "";

//      for(int ii = 0 ; ii<nsta.Count(); ii++)         // ? ? 

//      {

//          stemp = stemp + "; " + nsta.Pop().ToString();

//      }

//      Console.WriteLine("Pop: {0}" , stemp);

//      Console.WriteLine("nsta.Count: {0}" , nsta.Count());

        stemp = "";

        while(nsta.Count() > 0)

        {

            stemp = stemp + "; " + nsta.Pop().ToString(); 

        }

        Console.WriteLine("Pop with while: {0}" , stemp);

        Console.WriteLine("Pop.Count: {0}" , nsta.Count());

    }

​

    public static void Main()

    {

        Console.WriteLine("Hello World");

        QueueTest();

        StackTest();

    }

}