public static GenomeSorterDual Mutate(this
GenomeSorterDual genomeDualSorter, IRando randy)
{
var mutantIndex = randy.NextUint(genomeDualSorter.StageCount);
var newChromA = genomeDualSorter.ChromosomeA;
var newChromB = genomeDualSorter.ChromosomeB;
var newChoices = genomeDualSorter.Choices;
if (randy.NextBool(0.5))
{
var mutantStage = randy.RewireSorterStage(genomeDualSorter.ChromoA(mutantIndex));
newChromA = newChromA.ReplaceAtIndex(mutantIndex, mutantStage);
}
else
{
var mutantStage = randy.RewireSorterStage(genomeDualSorter.ChromoB(mutantIndex));
newChromB = newChromB.ReplaceAtIndex(mutantIndex, mutantStage);
}
return(new GenomeSorterDual(
id: Guid.NewGuid(),
chromA: newChromA,
chromB: newChromB,
choices: newChoices));
}
public static ISorter Mutate(this ISorter sorter, IRando rando, StageReplacementMode stageReplacementMode)
{
var mutantIndex = rando.NextUint(sorter.StageCount);
var stageToReplace = sorter[(int)mutantIndex];
ISorterStage mutantStage = null;
switch (stageReplacementMode)
{
case StageReplacementMode.RandomReplace:
mutantStage = rando.ToFullSorterStage(order: sorter.Order, stageNumber: mutantIndex);
break;
case StageReplacementMode.RandomRewire:
mutantStage = rando.RewireSorterStage(stageToReplace);
break;
case StageReplacementMode.RandomConjugate:
mutantStage = stageToReplace.ConjugateByRandomPermutation(rando).ToSorterStage(mutantIndex);
break;
case StageReplacementMode.RCTC:
mutantStage = stageToReplace.ConjugateByRandomSingleTwoCycle(rando).ToSorterStage(mutantIndex);
break;
default:
throw new Exception($"{stageReplacementMode.ToString()}");
}
return(sorter.SorterStages.ReplaceAtIndex(mutantIndex, mutantStage)
.ToSorter(id: Guid.NewGuid(), genomeId: Guid.Empty));
}
