import java.util.*;

public class Solver
{
    public Solver (boolean debug)
    {
        _debug = debug;
    }

    Vector<Tile> arrangement (Vector<Tile> tiles)
    {
        Vector<Tile> toReturn = new Vector<Tile>();

        return toReturn;
    }

    private boolean _debug;
}
@@ -214,16 +214,172 @@
 Tile%3E();
+%0A        double dimension = Math.sqrt((double) tiles.size());%0A%0A        if (_debug)%0A            System.out.println(%22Dimensions %22+dimension+%22 by %22+dimension);
 %0A%0A      

Update Solver.java