newChild method

private Candidate newChild(Candidate c1, Candidate c2, int pivot) {
    Candidate newCandidate = new Candidate(cubeSize);

    Set<Integer> usedGenes = new HashSet<Integer>(pivot);

    int pivotPointPos = pivot;
    for(int i=0; i<=pivotPointPos; i++) {
        newCandidate.genotype[i] = c1.genotype[i];
        usedGenes.add(c1.genotype[i]);
    }
    for(int i=0; i<numElements; i++) {
        if(!usedGenes.contains(c2.genotype[i])) {
            newCandidate.genotype[++pivotPointPos] = c2.genotype[i];
        }
    }
    return newCandidate;
}