645 Checkerboard Karel Answer Verified

Here is the proper text for the Checkerboard Karel problem (often associated with Stanford's CS106A course).

: Ensure Karel checks if a beeper was placed in the last corner of the previous row to decide if the first corner of the row should have one. WordPress.com Verified Code Outline (Python) 645 checkerboard karel answer verified

Verification reasoning:

public void run() 
    // Start by placing a beeper at (1,1)
    putBeeper();
} fillRow()  (frontIsClear()) 
        move();

, making it much easier to debug the alternating pattern logic. Effective State Management: Here is the proper text for the Checkerboard
// Fill a row going West, placing beepers on every other corner
private void fillRowWest() 
    while (frontIsClear()) 
        move();
        if (frontIsClear()) 
            move();
            putBeeper();
         else 
            if (noBeepersPresent()) 
                putBeeper();