Polynomial codec

PolinomialCodec.java

final class Polynomial {
    private final double[] a;

    Polynomial(final double... a) {
        this.a = a.clone();
    }

    // Uses Horner's Method to evaluate the polynomial.
    double apply(final double x) {
        double result = a[a.length - 1];
        for (int i = a.length - 2; i >= 0; i--) {
            result = x*result + a[i];
        }
        return result;
    }
}

Codec<Polynomial, DoubleGene> codec(final int degree) {
    return Codec.of(
        Genotype.of(DoubleChromosome.of(
            DoubleRange.of(-100, 100),
            degree + 1)
        ),
        gt -> new Polynomial(
            gt.getChromosome()
                .as(DoubleChromosome.class)
                .toArray()
        )
    );
}