public void fillPattern1() {
		for (int row = 0; row < matrix.length; row++) {
			for (int col = 0; col < matrix[0].length; col++) {
				if (row < col)
					matrix[row][col] = 1;
				else if (row == col)
					matrix[row][col] = 2;
				else
					matrix[row][col] = 3;
			}
		}
	}