Spiral traversal of matrix in scala

Scala program for Spiral traversal of matrix. Here more information.

// Scala program
// Spiral form of 2d array
class SpiralView()
{
	def spiral(data: Array[Array[Int]], startRow: Int, 
      startCol: Int, endRow: Int, endCol: Int, element1: Int): Unit = {
		var i: Int = startCol;
		var element: Int = element1;
		// Left to right
		while (i <= endCol && element > 0)
		{
			element -= 1;
			print("  " + data(startRow)(i));
			i += 1;
		}
		i = startRow + 1;
		// Top to down
		while (i <= endRow && element > 0)
		{
			element -= 1;
			print("  " + data(i)(endCol));
			i += 1;
		}
		i = endCol - 1;
		// Bottom right to bottom-left
		while (i >= startCol && element > 0)
		{
			element -= 1;
			print("  " + data(endRow)(i));
			i -= 1;
		}
		i = endRow - 1;
		// Bottom left to top
		while (i > startRow && element > 0)
		{
			element -= 1;
			print("  " + data(i)(startRow));
			i -= 1;
		}
		if (startRow + 1 <= endRow - 1 && element > 0)
		{
			// Recursive call
			spiral(data, startRow + 1, 
                   startCol + 1, endRow - 1, endCol - 1, element);
		}
	}
}
object Main
{
	def main(args: Array[String]): Unit = {
		var task: SpiralView = new SpiralView();
		// 2d matrix
		var matrix: Array[Array[Int]] = Array(
          Array(1, 2, 3, 4, 5, 6), 
          Array(22, 23, 24, 25, 26, 7), 
          Array(21, 36, 37, 38, 27, 8), 
          Array(20, 35, 42, 39, 28, 9), 
          Array(19, 34, 41, 40, 29, 10), 
          Array(18, 33, 32, 31, 30, 11), 
          Array(17, 16, 15, 14, 13, 12)
        );
		var row: Int = matrix.length;
		var col: Int = matrix(0).length;
		// Get the number of element
		var element: Int = row * col;
		task.spiral(matrix, 0, 0, row - 1, col - 1, element);
	}
}

Output

  1  2  3  4  5  6  7  8  9  10  11  12  13  14  15  16  17  18  19  20  21  22  23  24  25  26  27  28  29  30  31  32  33  34  35  36  37  38  39  40  41  42