using System;

using System.Collections;

public class Program

{

    public static void Main()

    {

        int iPositions = 9;

        int [,] iArrayEdges = new int[iPositions,iPositions];

        //init edges to 0

        iArrayEdges = InitEdges (iPositions);

        ArrayList alStaff = new ArrayList  {"a", "b", "c","d","e","f","g","h","i","x1","x2"};

        ArrayList alPositions = new ArrayList  ();

        for (int i =0; i < iPositions;  i ++)

        {

            alPositions.Add (i);

            if (i < iPositions - 2) // edge leads to next

                iArrayEdges[i, i+1] = 1;

            else

                iArrayEdges [i,0] = 1;

        }

​

        //foreach (int i in alPositions)

        // Console.Write(i + " ");

        // todo: show edges

        Console.WriteLine ();

        int iSize = iPositions;

        ShowEdges (iArrayEdges, iSize);

        /*foreach  (string str in alStaff)

            Console.Write (str  + " ");*/

    }

    public static int [,] InitEdges(int iSize)

    {

        int [,] iArrayRes = new int[iSize,iSize];

        for ( int  i =0; i < iSize; i ++)

            for (int j=0;j < iSize; j++)

            iArrayRes [i, j] =0;

        return iArrayRes;

    }

    public static void ShowEdges  (int [,] iArrayEdges, int iSize)

    {

        for (int i=0; i <iSize; i++)

            for (int j =0; j <iSize; j++)

             Console.Write ("("+ i+"," +j+")"+ iArrayEdges [i,j]); 

    }

}