9.1.7 Checkerboard V2 Codehs May 2026

var rect = new Rectangle(x, y, SQUARE_SIZE, SQUARE_SIZE); rect.setColor(color); rect.setFilled(true); add(rect);

System.out.print("Enter number of rows: "); int rows = input.nextInt(); System.out.print("Enter number of columns: "); int cols = input.nextInt(); for (int i = 0; i < rows; i++) for (int j = 0; j < cols; j++) if ((i + j) % 2 == 0) System.out.print("@"); else System.out.print("."); System.out.println(); // new line after each row 9.1.7 Checkerboard V2 Codehs

Whether you are printing text to the console or drawing colored rectangles on a canvas, the logic remains identical. Write your code to be flexible (no magic numbers), test edge cases (1 row or 1 column), and always double-check your starting color. var rect = new Rectangle(x, y, SQUARE_SIZE, SQUARE_SIZE);

public void run() double sqWidth = (double) getWidth() / NUM_COLS; double sqHeight = (double) getHeight() / NUM_ROWS; for (int row = 0; row < NUM_ROWS; row++) for (int col = 0; col < NUM_COLS; col++) double x = col * sqWidth; double y = row * sqHeight; GRect square = new GRect(x, y, sqWidth, sqHeight); square.setFilled(true); if ((row + col) % 2 == 0) square.setFillColor(Color.BLACK); else square.setFillColor(Color.RED); add(square); var rect = new Rectangle(x