stack és queue

/*
last in first out -> Stack
first in first out -> Queue
*/

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace ConsoleApplication1
{
  class Program
  {
    static void kiirat2(Queue<int> s)
    {
      foreach (int x in s)
      {
        Console.Write("{0} ", x);
      }
    }
    static void kiirat(Stack<int> s)
    {
      foreach(int x in s)
      {
        Console.Write("{0} ", x);
      }
    }
    static void Main(string[] args)
    {
      Stack<int> stack = new Stack<int>();
      Queue<int> queue = new Queue<int>();
      stack.Push(13);
      stack.Push(16);
      stack.Push(19);
      stack.Push(25);
      stack.Push(26);
      stack.Push(48);
      stack.Push(78);
      stack.Push(794);
      kiirat(stack);
      Console.WriteLine();
      int a = stack.Pop();
      kiirat(stack);
      Console.WriteLine();
      int b = stack.Peek();
      Console.WriteLine(b);
      queue.Enqueue(14);
      queue.Enqueue(16);
      queue.Enqueue(17);
      queue.Enqueue(18);
      queue.Enqueue(19);
      kiirat2(queue);
      Console.WriteLine();
      queue.Dequeue();
      kiirat2(queue);
      int c = queue.Peek();
      Console.WriteLine();
      Console.WriteLine(c);
      Console.ReadKey();
    }
  }
}