What are you using? (e.g., Java, JavaScript, Python)
Ensure your loops start at 0 and use the strictly less-than operator ( < NUM_ROWS ). Starting at 1 or using <= will push squares off the screen.
To solve 9.1.7 Checkerboard V2 , you need to be comfortable with these four pillars:
After configuring the object, always call add(object) in graphics programs. 9.1.7 Checkerboard V2 Codehs
While nested loops are standard, you can technically build the checkerboard using a single loop. This is an excellent way to impress your instructor or push your skills further.
for (var row = 0; row < GRID_SIZE; row++) for (var col = 0; col < GRID_SIZE; col++) // Drawing logic goes here Use code with caution. 3. Applying Conditional Logic
grid where 1s and 0s alternate perfectly in every direction. What are you using
Now, loop through the rows and columns, apply the modulo math, and call your helper function. javascript
). If your code just prints the pattern without actually building the list structure, it may fail even if the output looks correct. Indentation
: Use an outer loop to move down the rows and an inner loop to place squares across the columns. This is an excellent way to impress your
Solving 9.1.7 Checkerboard V2 is less about the act of placing markers and more about algorithmic thinking
Ensure the y coordinate uses the row variable, not col . Off-by-One Errors: Ensure your loops run exactly from to ROWS-1 or COLS-1 .