public Move[] getPossibleMoves(Player p) {
        ArrayList<Move> arr = new ArrayList<>();
	      for(int i = Board.NUM_COLS-1; i>=0; i--){
	    	  for(int x = Board.NUM_ROWS-1; x>=0; x--){
	    		  if(getTile(x, i)==null){
	    			 arr.add(new Move(p, i));
	    			 break;
	    		  }
	    	  }
	      }
        return arr.toArray(new Move[arr.size()]);
    }