public String[][] fill(String[][] table){
        for (int i = 0; i < table.length; i++)
            for (int j = 0; j < table[i].length; j++)
                if ((i == 0) || (j ==0))
                    table[i][j] = "";
                else
                    table[i][j] = "0.0";
        return table;
    }