private static void CheckIsNull(Polynominal p1, Polynominal p2)
{
if (p1 is null || p2 is null)
{
throw new NullReferenceException();
}
}
private static Polynominal SubtractArrayValues(Polynominal p1, Polynominal p2)
{
Polynominal result = new Polynominal((int[])p1.Value.Clone());
for (int i = 0; i <= p2.Power; i++)
{
result[i] -= p2[i];
}
return(result);
}
public static Polynominal MultiplyPolynominals(Polynominal p1, Polynominal p2)
{
CheckIsNull(p1, p2);
int[] resultCoefs = new int[p1.Power + p2.Power + 1];
for (int i = 0; i <= p2.Power; i++)
{
for (int j = i; j <= p1.Power + i; j++)
{
resultCoefs[j] += p1[j - i] * p2[i];
}
}
return(new Polynominal(resultCoefs));
}
public static Polynominal SubtractPolynominals(Polynominal p1, Polynominal p2)
{
CheckIsNull(p1, p2);
return((p1.Power >= p2.Power) ? SubtractArrayValues(p1, p2) : SubtractArrayValues(p2, p1));
}