private static void IslandCounter(ref char[,] map, ref int? island, ref int rows, ref int columns, int currentrow, int currentcolumn)
        {
            counter++;
            if (currentrow < 0 || currentcolumn < 0)
            {
                return;
            }
            if (map[currentrow, currentcolumn] == 'q')
            {
                island += 0;
                return;
            }
            if ((currentrow == 0 || currentrow == rows - 1 || currentcolumn == 0 || currentcolumn == columns - 1) && map[currentrow, currentcolumn] == 'x')
            {
                island = null;
                return;
            }
            island += 1;
            map[currentrow, currentcolumn] = 'q';
            if (map[currentrow - 1, currentcolumn - 1] == 'x')
                IslandCounter(ref map, ref island, ref rows, ref columns, currentrow - 1, currentcolumn - 1);
            if (map[currentrow - 1, currentcolumn] == 'x')
                IslandCounter(ref map, ref island, ref rows, ref columns, currentrow - 1, currentcolumn);
            if (map[currentrow - 1, currentcolumn + 1] == 'x')
                IslandCounter(ref map, ref island, ref rows, ref columns, currentrow - 1, currentcolumn + 1);
            if (map[currentrow, currentcolumn - 1] == 'x')
                IslandCounter(ref map, ref island, ref rows, ref columns, currentrow, currentcolumn - 1);
            if (map[currentrow, currentcolumn + 1] == 'x')
                IslandCounter(ref map, ref island, ref rows, ref columns, currentrow, currentcolumn + 1);
            if (map[currentrow + 1, currentcolumn - 1] == 'x')
                IslandCounter(ref map, ref island, ref rows, ref columns, currentrow + 1, currentcolumn - 1);
            if (map[currentrow + 1, currentcolumn] == 'x')
                IslandCounter(ref map, ref island, ref rows, ref columns, currentrow + 1, currentcolumn);
            if (map[currentrow + 1, currentcolumn + 1] == 'x')
                IslandCounter(ref map, ref island, ref rows, ref columns, currentrow + 1, currentcolumn + 1);
        }