/// <summary>
/// Clone the chromosome.
/// </summary>
///
/// <returns>Return's clone of the chromosome.</returns>
///
/// <remarks><para>The method clones the chromosome returning the exact copy of it.</para>
/// </remarks>
///
public override Chromosome ImplementationClone()
{
PermutationChromosome permutationChromosome = new PermutationChromosome();
permutationChromosome.Length = Length;
permutationChromosome.Positions = Positions.ToArray();
return(permutationChromosome);
}
/// <summary>
/// Crossover operator.
/// </summary>
///
/// <param name="pair">Pair chromosome to crossover with.</param>
///
/// <remarks><para>The method performs crossover between two chromosomes – interchanging
/// some parts between these chromosomes.</para></remarks>
///
public override Tuple <Chromosome, Chromosome> Crossover(Chromosome pair)
{
PermutationChromosome p = (PermutationChromosome)pair;
if (p == null)
{
throw new ArgumentNullException("pair");
}
if (p.Length != Length)
{
throw new ArgumentException("The parents must have the same length", "pair");
}
ushort[] child1 = new ushort[Length];
ushort[] child2 = new ushort[Length];
// create two children
CreateChildUsingCrossover(this.Positions, p.Positions, child1);
CreateChildUsingCrossover(p.Positions, this.Positions, child2);
return(new Tuple <Chromosome, Chromosome>(new PermutationChromosome(child1), new PermutationChromosome(child2)));
}