[mlpack-git] [mlpack/mlpack] NeuralEvolution - implemented gene, genome (#686)

[Marcus Edel]

> +    std::vector<double> toNeuronDepths;
> +    for (ssize_t i=0; i<aLinkGenes.size(); ++i) {
> +      NeuronGene toNeuron = GetNeuronById(aLinkGenes[i].ToNeuronId());
> +      toNeuronDepths.push_back(toNeuron.Depth());
> +    }
> +
> +    std::vector<DepthAndLink> depthAndLinks;
> +    ssize_t linkGenesSize = aLinkGenes.size();
> +    for (ssize_t i=0; i<linkGenesSize; ++i) {
> +      depthAndLinks.push_back(DepthAndLink(toNeuronDepths[i], aLinkGenes[i]));
> +    }
> +
> +    std::sort(depthAndLinks.begin(), depthAndLinks.end());
> +
> +    for (ssize_t i=0; i<linkGenesSize; ++i) {
> +      aLinkGenes[i] = depthAndLinks[i].link;

I think, we could speed this up, if we would just store the index of all linkGenes, an use another list, that contains all linkGenes as a reference.

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