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我尝试为 connect4 游戏编写 min max 算法，但是当我运行此代码时，它进入无限循环并且不返回移动或结果，所以我需要帮助以了解它有什么问题，我在 6 * 7 单元板中工作

private int score()
{
    int x = check_Winner();//i checked it and it work right ot return 1 if player 1 win or 2 if pc win or 0 in tie
    if (x == 1) return 10;
    else if (x == 2) return -10;
    else return 0;
}

public int MinMax(int player_num)
{
    List<pair> possiple_moves = get_possible_moves();// it works will
    int score_so_far = score();
    if (possiple_moves.Count == 0 || score_so_far != 0)
        return score_so_far;

    List<int> scores = new List<int>();
    List<pair> moves = new List<pair>();

    foreach (pair move in possiple_moves)
    {
        if (player_num == 1)
        {
            cells[move.x, move.y].player_num = 1;
            scores.Add(MinMax(2));
        }
        else
        {
            cells[move.x, move.y].player_num = 2;
            scores.Add(MinMax(1));
        }
        moves.Add(move);

        cells[move.x, move.y].player_num = 0;
    }

    if (player_num == 1)
    {
        int max_score_indx = 0, tmp = int.MinValue;
        for (int i = 0; i < scores.Count; i++)
        {
            if (scores[i] > tmp)
            {
                tmp = scores[i];
                max_score_indx = i;
            }
        }
        pc_choise = moves[max_score_indx];
        return scores[max_score_indx];
    }
    //==================
    else
    {
        int min_score_indx = 0, tmp = int.MaxValue;
        for (int i = 0; i < scores.Count; i++)
        {
            if (scores[i] < tmp)
            {
                tmp = scores[i];
                min_score_indx = i;
            }
        }
        pc_choise = moves[min_score_indx];
        return scores[min_score_indx];
    }
}
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1 回答 1

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@Equalsk 是对的，我相信：在到达评估停止条件的代码之前，您正在从 foreach 循环中调用 MinMax。因此，如果 get_possible_moves 方法返回与 Null 不同的内容，您将陷入 foreach --> MinMax --> foreach --> MinMax --> foreach...

于 2016-12-19T21:43:51.567 回答