thing

    // multipliziert das Ziffernfeld n mit 10
    static int[ ] times10(int[ ] n)
    {
        int outputArray[] = new int [n.length+1];
        int [] input = copy(n);
        String tmp = "";
        int rem = 0,remout = 0;

        for (int i = 0; i < input.length; i++)
            {
            input [i] = 10*input [i]+rem;

            if (input [i] > 9)
            {
            tmp = String.valueOf(input [i]);
            rem = Character.getNumericValue(tmp.charAt(0));
            input [i] = Character.getNumericValue(tmp.charAt(1));
            if (i == input.length-1 && rem != 0)
            {
                remout = Character.getNumericValue(tmp.charAt(0));
                outputArray [i+1] = remout;
            }
            }
            else
            {
            rem =0;
            tmp ="";
            }
            outputArray [i] = input[i];
            }


        return outputArray;
    }
    // multipliziert das Ziffernfeld n mit einer (einstelligen!) int-Zahl
    static int[ ] times(int[ ] n, int d)
    {
        int outputArray[] = new int [n.length+1];
        int [] input = copy(n);
        String tmp = "";
        int rem = 0,remout = 0;
            if (d < 10 && d > -10)
            {
            for (int i = 0; i < input.length; i++)
                {
                input [i] = d*input [i]+rem;

                if (input [i] > 9)
                {
                tmp = String.valueOf(input [i]);
                rem = Character.getNumericValue(tmp.charAt(0));
                input [i] = Character.getNumericValue(tmp.charAt(1));
                if (i == input.length-1 && rem != 0)
                {
                    remout = Character.getNumericValue(tmp.charAt(0));
                    outputArray [i+1] = remout;
                }
                }
                else
                {
                rem =0;
                tmp ="";
                }
                outputArray [i] = input[i];
                }
            }
            else
            {
            outputArray = input;
            }
        return outputArray;
    }