}
    protected void copy2DArray(int from[][], int to[][]) { 	for(int i=0; i<from.length; i++) {	    to[i] = new int[from[i].length];	    System.arraycopy(from[i], 0, to[i], 0, from[i].length);	    //for(int j=0; j<from[i].length; j++)	    //	to[i][j] = from[i][j]; 	}    }