9.1.6 Checkerboard V1 Codehs -

The solution demonstrates how to create an alternating pattern without knowing the grid size in advance, an essential concept in robotics and grid-based programming.

, which are the building blocks of game design and UI development. code snippet

for row in range(8): # Temporary list for the current row current_row = []

1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 9.1.6 checkerboard v1 codehs

For further help with 2D lists, check out official resources like the CodeHS Python 3 Course Explore Page or community discussions on Reddit's r/codehs Checkerboard v2

Do not initialize the board like this: board = [[0]*8]*8 . This creates references to the same list 8 times. If you change one row, all rows change. Use a for loop to append new, unique lists to the board variable as shown in the code above. B. Accessing 2D Lists The core of this exercise is board[row][col] = 1 . board[0] accesses the first row (the first internal list). board[0][0] accesses the first element of the first row. C. The print_board Format

// Constants for the checkerboard dimensions var NUM_ROWS = 8; var NUM_COLS = 8; var SQUARE_SIZE = getWidth() / NUM_COLS; function start() for (var r = 0; r < NUM_ROWS; r++) for (var c = 0; c < NUM_COLS; c++) // Calculate pixel positions var xPos = c * SQUARE_SIZE; var yPos = r * SQUARE_SIZE; // Create the square graphic object var rect = new Rectangle(SQUARE_SIZE, SQUARE_SIZE); rect.setPosition(xPos, yPos); // Determine the color based on row and column indexes if ((r + c) % 2 === 0) rect.setColor(Color.black); else rect.setColor(Color.white); // Draw the square onto the screen add(rect); Use code with caution. Step-by-Step Code Explanation 1. Dynamic Sizing via Constants The solution demonstrates how to create an alternating

is a foundational exercise designed to teach nested loops, 2D arrays (or grid systems), and conditional logic.

Make sure you are using Color.red and Color.gray (or whatever specific colors your assignment instructions require).

This public link is valid for 7 days and shares a thread, including any personal information you added. This link or copies made by others cannot be deleted. If you share with third parties, their policies apply. Can’t copy the link right now. Try again later. This creates references to the same list 8 times

// Make sure the square is filled with the color square.setFilled(true);