print_board(board)
Here is a step-by-step strategy to build your checkerboard, complete with code snippets and explanations.
The outer loop ( row ) tells the program to start at the top and move down. For every single row, the inner loop ( col ) runs across from left to right. This ensures every single coordinate on the grid is visited. 2. The Modulo Operator (%) The line (row + col) % 2 == 0 is the "brain" of the code. % 2 finds the remainder when divided by 2. If the remainder is 0 , the number is even.
: Colors must alternate both horizontally and vertically.
Here is the Java code for CodeHS 9.1.6 Checkerboard v1 :
function start() var row = 1; while (true) // Determine if row starts with beeper var startWithBeeper = (row % 2 == 1); // Fill the row var col = 1; while (true) if (startWithBeeper) if (col % 2 == 1) putBeeper();
Here is a common way to structure the code using list multiplication for simplicity: # Pass this function a list of lists to print it as a grid print_board range(len(board)): # Join elements with a space for readability .join([str(x) board[i]])) # 1. Initialize the empty board # 2. Loop through 8 rows # 3. Add a row of eight 1s for pieces board.append([ # 4. Add a row of eight 0s for empty space board.append([ # 5. Print the final result print_board(board) Use code with caution. Copied to clipboard Common Pitfalls Nested Loops
The board is represented with 1's and 0's:
