/// <summary>
/// Generates a "sparse" or "dense" polynomial containing numOnes ints equal to 1,
/// numNegOnes int equal to -1, and the rest equal to 0.
/// </summary>
///
/// <param name="N">Number of coeffeients</param>
/// <param name="NumOnes">Number of ones</param>
/// <param name="NumNegOnes">Number of negative ones</param>
/// <param name="Sparse">Create a SparseTernaryPolynomial or DenseTernaryPolynomial</param>
/// <param name="Rng">Random number generator</param>
///
/// <returns>A ternary polynomial</returns>
public static ITernaryPolynomial GenerateRandomTernary(int N, int NumOnes, int NumNegOnes, bool Sparse, IRandom Rng)
{
if (Sparse)
{
return(SparseTernaryPolynomial.GenerateRandom(N, NumOnes, NumNegOnes, Rng));
}
else
{
return(DenseTernaryPolynomial.GenerateRandom(N, NumOnes, NumNegOnes, Rng));
}
}
/// <summary>
/// Generates a <c>ProductFormPolynomial</c> from three random ternary polynomials.
/// </summary>
///
/// <param name="N">Number of coefficients</param>
/// <param name="Df1">Number of ones in the first polynomial; also the number of negative ones</param>
/// <param name="Df2">Number of ones in the second polynomial; also the number of negative ones</param>
/// <param name="Df3Ones">Number of ones in the third polynomial</param>
/// <param name="Df3NegOnes">Number of negative ones in the third polynomial</param>
/// <param name="Rng">Random number generator</param>
///
/// <returns>A random <c>ProductFormPolynomial</c></returns>
public static ProductFormPolynomial GenerateRandom(int N, int Df1, int Df2, int Df3Ones, int Df3NegOnes, IRandom Rng)
{
SparseTernaryPolynomial f1 = null;
SparseTernaryPolynomial f2 = null;
SparseTernaryPolynomial f3 = null;
f1 = SparseTernaryPolynomial.GenerateRandom(N, Df1, Df1, Rng);
f2 = SparseTernaryPolynomial.GenerateRandom(N, Df2, Df2, Rng);
f3 = SparseTernaryPolynomial.GenerateRandom(N, Df3Ones, Df3NegOnes, Rng);
return(new ProductFormPolynomial(f1, f2, f3));
}
