public BigInteger this[int degree]
{
get
{
ITerm term = Terms.FirstOrDefault(t => t.Exponent == degree);
if (term == default(ITerm))
{
return(BigInteger.Zero);
}
else
{
return(term.CoEfficient);
}
}
set
{
ITerm term = Terms.FirstOrDefault(t => t.Exponent == degree);
if (term == default(ITerm))
{
if (value != BigInteger.Zero)
{
ITerm newTerm = new Term(value, degree);
TermCollection terms = _terms;
terms.Add(newTerm);
SetTerms(terms);
}
}
else
{
term.CoEfficient = value;
}
}
}
public void RemoveZeros()
{
_terms.RemoveAll(t => t.CoEfficient == 0);
if (!_terms.Any())
{
_terms = new TermCollection(Term.GetTerms(new BigInteger[] { 0 }).ToList());
}
SetDegree();
}
private void SetTerms(IEnumerable <ITerm> terms)
{
_terms = new TermCollection(terms.OrderBy(t => t.Exponent).ToList());
RemoveZeros();
}
internal Polynomial()
{
_terms = new TermCollection();
}
