This detailed guide explains the logic behind the 0 and 1 checkerboard pattern in Python, providing step-by-step explanations and multiple solution approaches.
A: The GraphicsProgram class has its own main method internally. You do not need to write public static void main . Just extend GraphicsProgram .
For that classic pattern, the logic changes. The value of a square depends on the sum of its row and column indices. This fundamental approach is essential for tackling other problems.
If you need a 10x10 board, change NUM_ROWS and NUM_COLS to 10. Adjust SQUARE_SIZE to getWidth()/10 . 9.1.7 checkerboard v2 answers
The CodeHS exercise specifically asks for an 8x8 grid, but you can modify the code to create boards of any size:
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In a checkerboard, a square is "Color A" if the sum of its row and column indices is even . It is "Color B" if the sum is odd . (0 + 0) = 0 ( Even ) (0 + 1) = 1 ( Odd ) (1 + 0) = 1 ( Odd ) (1 + 1) = 2 ( Even ) Step-by-Step Implementation Guide 1. Set Up Your Nested Loops This detailed guide explains the logic behind the
my_grid = []
Keep coding, keep experimenting, and remember that every expert was once a beginner who simply refused to give up.
: The core feature of a checkerboard is that adjacent cells differ. Mathematically, you can determine which number to place by checking if the sum of the current indices is even or odd. (row + col) % 2 == 1 Otherwise, place a Row Construction : In each iteration of the outer loop, a current_row list is filled by the inner loop and then appended to : Finally, loop through Just extend GraphicsProgram
This often involves printing an 8x8 grid that alternates between two different colors (typically black and white) for each square.
This solution creates the correct pattern: the top three rows are entirely 1 , the next two are 0 , and the bottom three are 1 again.
square.setBorderColor(Color.WHITE);
A correct solution will generate output that looks like this:
Moreover, the "v2" in the title is a nod to the iterative process in real-world software development. The first version of a program handles the basics, the second version refines and improves, and subsequent versions add features and robustness. Here, "v2" often involves working with a provided print_board function, encouraging you to write modular code that can be integrated into larger systems.