using System;

public class Program

{

    public static void Print(int[] list)

    { 

        Console.WriteLine();

        foreach(var element in list)

        {                   

            Console.Write(element);

            Console.Write(" ");

        }

        Console.WriteLine();

    }

    public static void Main()

    {

        var testArray = new int[11] {1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11};

        int startIndex = 0;

        int stopIndex = 5;

        int boundaryIndex = 5;

        int boundaryStopIndex = testArray.Length;

        while(startIndex < stopIndex && boundaryIndex < boundaryStopIndex)

        {

            var temp = testArray[startIndex];

            testArray[startIndex] = testArray[boundaryIndex];

            testArray[boundaryIndex] = temp;

            startIndex++;

            boundaryIndex++;

            Print(testArray);

        }

        Console.WriteLine("Done");

        Print(testArray);

    }

}