static void Main(string[] args)
{
// 2x0 + 0x1 + 3x2 and polynomial 0x0 + 1x1 + 0x2
var p1 = new Polynomial(new[] { 2, 0, 3 }, new[] { 0, 1, 2 }); // 2 + 0x + 3x²
var p2 = new Polynomial(new[] { 0, 1, 0 }, new[] { 0, 1, 2 }); // 0 + 1x + 0x²
// Add
Console.WriteLine("Add:");
var p3 = Polynomial.Add(p1, p2); // -> 6 + 5x (6, 0; 5, 1)
Console.WriteLine(p1.ToString());
Console.WriteLine(p2.ToString());
Console.WriteLine(p3.ToString());
// 2x⁰ + 3x¹ X 1x² + 1x³ = 2x² + 5x³ + 3x⁴
var p4 = new Polynomial(new[] { 2, 3 }, new[] { 0, 1 }); // 2x⁰ + 3x¹
var p5 = new Polynomial(new[] { 1, 1 }, new[] { 2, 3 }); // 1x² + 1x³
// Multiply
Console.WriteLine("\r\nMultiply:");
var p6 = Polynomial.Multiply(p4, p5); // 2x² + 5x³ + 3x⁴
Console.WriteLine(p4.ToString());
Console.WriteLine(p5.ToString());
Console.WriteLine(p6.ToString());
// Multiply with Remove Zero Coefficients
Console.WriteLine("\r\nMultiply with Remove Zero Coefficients:");
var p7 = Polynomial.MultiplyRemoveZeroCoefficient(p4, p5); // 2x² + 5x³ + 3x⁴
Console.WriteLine(p7.ToString());
// Remove Zero Coefficients:
Console.WriteLine("\r\nRemove Zero Coefficients:");
var p8 = new Polynomial(new[] { 0, 2, 0, 3 }, new[] { 0, 1, 2, 3 });
Console.WriteLine(p8.ToString());
p8.RemoveZeroCoefficient();
Console.WriteLine(p8.ToString());
// Zero polynomial
Console.WriteLine("\r\nZero polynomial:");
var p9 = new Polynomial(new [] { 0, 0, 0, 0 }, new [] { 0, 1, 2, 3 });
Console.WriteLine(p9.ToString());
p9.RemoveZeroCoefficient();
Console.WriteLine(p9.ToString());
Console.ReadLine();
}
public static Polynomial operator -(Polynomial p1, Polynomial p2)
{
Polynomial result = new Polynomial();
int maxDegree = Math.Max(p1.MaxDegree, p2.MaxDegree);
int minDegree = Math.Min(p1.MinDegree, p2.MinDegree);
for (int degree = minDegree; degree <= maxDegree; degree++)
{
double coef = p1.GetCoeff(degree) - p2.GetCoeff(degree);
result.Add(new Term(coef, degree));
}
return(result);
}
