ox2

public void crossover()
    {
        if(ThreadLocalRandom.current().nextInt(1, 101)<86)
        {
            for(int i=0; i<pop.size(); i++)
            {
                if(i%2==0)
                {
                    Individual tmp1=ordered_crossover(pop.get(i), pop.get(i+1));
                    Individual tmp2=ordered_crossover(pop.get(i+1), pop.get(i));
                    pop.set(i, tmp1);
                    pop.set(i+1, tmp2);
                }
            }
        }
    }

    public static Individual ordered_crossover(Individual a, Individual b)
    {
        //cutpoints
        int c1=0;
        int c2=0;

        int gen_size=a.getGenotype().size();

        int r1=ThreadLocalRandom.current().nextInt(0, gen_size);
        int r2=ThreadLocalRandom.current().nextInt(0, gen_size);

        while(r2==r1)
        {
            r2=ThreadLocalRandom.current().nextInt(0, gen_size);
        }

        c1=Math.min(r1, r2);
        c2=Math.max(r1, r2);


        List<Integer> child_a=new ArrayList<>(a.getGenotype());

        for(int i=0; i<gen_size;i++)
        {
            if(i<c1)
            {
                child_a.set(i, gen_size);

            }
            if((i>c1-1)&&(i<c2+1))
            {
                child_a.set(i, a.getGenotype().get(i));

            }
            if(i>c2)
            {
                child_a.set(i, gen_size);

            }
        }



        for(int i=0; i<gen_size;i++)
        {
            if(child_a.get(i)==gen_size)
            {
                for(int j=0; j<gen_size;j++)
                {
                    if(child_a.contains(b.getGenotype().get(j))==false)
                    {
                        child_a.set(i, b.getGenotype().get(j));
                        break;
                    }
                }
            }
        }


        while(child_a.contains(52))
        {
            for(int i : b.genotype)
            {
                if(!child_a.contains(i))
                {
                    child_a.set(child_a.indexOf(52), i);
                }
            }
        }

        Individual child = new Individual(a, child_a);
        return child;
    }