StockpileCritter free response answer 2009

The StockpileCritter problem from the 2009 AP Computer Science Exam is typical of free response problems that test GridWorld: The AP Computer Science Case Study. The problem requires you to extend the Critter class, determine which methods to override, and implement the entire subclass.

StockpileCritter is #2 from the 2009 AP Computer Science Free Response.

https://secure-media.collegeboard.org/apc/ap09_frq_computer_science_a.pdf

StockpileCritter class

public class StockpileCritter extends Critter
{
    private int stockpile = 0;

    public void processActors(ArrayList<Actor> actors)
    {
        for(Actor a : actors)
        {
            a.removeSelfFromGrid();
            stockpile++;
        }

        stockpile--;
    }

    public Location selectMoveLocation(ArrayList<Location> locs)
    {
        if(stockpile < 0)
            return null;
        else
            return super.selectMoveLocation(locs);
    }
}

2009 AP CS Exam Free Response Solutions

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