Question

我想替换＆＃34; Mutate＆＃34;列表中的元素，通过从另一个列表中获取一些其他随机元素。

private int elitism = 20;
private int population = 1;
private int chance = 100;
private Random rand = new Random();
private List<HeroStats> allHeroes = new List<HeroStats>();
private List<Team> allTeams = new List<Team>();

如果我创建一个团队并改变它，它应该替换当前团队中的1个随机元素，但是如果我使用yhe Mutation方法，则替换不会发生;我得到了同样的团队

public void Mutation()
{
    // compute how many individuals will 100% survive
    int goodResults= population * elitism / 100;
    int index;
    int position;
    HeroStats old_hero, new_hero;
    Team new_team;

    for (int i = goodResults; i < allTeams.Count(); i++)
    {
        if (rand.Next(0, 100) < chance)
        {
            new_team = allTeams.ElementAt(i);
            index = allTeams.IndexOf(new_team);
            // select random hero within the team , a team having 5 heros
            position = rand.Next(0, 4);
            //RetrieveHero(int x) is a method which returns the hero from position x within a team
            old_hero = new_team.RetrieveHero(position);
            // get a new hero from the hero-list
            new_hero = allHeroes.ElementAt(rand.Next(0, 101));
            // associate the new value to the genome
            new_team.Remove(old_hero);
            new_team.Add(new_hero);
            allTeams[index] = new_team;
        }
    }
}

作为一个例子：考虑团队a = [1 2 3 4 5] 在team a经历一次变异之后，它可能看起来像这样的团队a = [1,2,3,4，R]，或团队a = [1，P，3， 4,5]，或团队a = [1,2,3,99,5]
为什么我的代码表现得如此奇怪？

Answer 1

我设法通过在Team类中添加一个方法解决问题：

public void ReplaceHero(HeroStats hero,HeroStats new_Hero)
        {
            for (int i = 0; i < 5;i++ )
                if (team.ElementAt(i).Equals(hero))
                {
                    team.Remove(hero);
                    team.Add(new_Hero);
                }
        }

如果我能做出任何改进，我真的很感激了解它们。

替换列表中的元素c＃

1 个答案: