If the board starts with black instead of red, simply swap the colors in the if-else block.
board = [] # 1. Initialize an empty list for row in range(8): # 2. Outer loop for each of the 8 rows new_row = [] # 3. Create a new row list for col in range(8): # 4. Inner loop for the 8 columns if (row < 3 or row > 4): # 5. Check if we are in the top or bottom 3 rows # 6. Add a 1 if the sum of row and col is even, otherwise add a 0 new_row.append(1 if (row + col) % 2 == 0 else 0) else: new_row.append(0) # 7. For middle rows, add only zeros board.append(new_row) # 8. Append the completed row to the board
: Explicitly setting grid[i][j] = 1 for the required rows rather than just printing the final output. 2. Common Errors in Initial Attempts
To achieve a true checkerboard pattern, the state of a specific coordinate depends on the mathematical relationship between its row index and column index. The Key Formula: 916 checkerboard v1 codehs fixed
Place an if (frontIsClear()) check directly before the second move() command inside your row functions. 3. Infinite Loops at the Ceiling
If you would like to debug a specific error message you are receiving, please share the or the canvas dimensions required by your teacher. Share public link
Forgetting that radius is half of the diameter . If your circles are 40 pixels wide, you need to move 40 pixels to reach the next center point. If the board starts with black instead of
: Off-by-one errors in loop conditions or canvas size calculations.
The easiest way to decide if a cell should be a 0 or a 1 is to add its row index and column index together:
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. Outer loop for each of the 8 rows new_row = [] # 3
The program misses the last row or the last column entirely.
// Checkerboard logic: alternate color based on (row + col) % 2 if ((row + col) % 2 == 0) square.setColor(Color.RED); // or Color.GRAY else square.setColor(Color.BLACK);