    public double median()
    {
        if (this.isEmpty())
        {
            throw new ArithmeticException();
        }
        byte[] sortedArray = this.toSortedArray();
        int middleIndex = sortedArray.length >> 1;
        if (sortedArray.length > 1 && (sortedArray.length & 1) == 0)
        {
            byte first = sortedArray[middleIndex];
            byte second = sortedArray[middleIndex - 1];
            return ((double) first + (double) second) / 2.0;
        }
        return (double) sortedArray[middleIndex];
    }