int Name::HashValue() const
// preconditon: 0 < length()
// postcondition: returns hash value
{
    int sum = 0;
    int k;
    
    for(k=0; k < length(); k++)
    {
	sum += kthChar(k) * (k+1);
	// sum += (*this)[k] * (k+1);
    }
    return sum;
}