javascript - 计算扑克牌局赔率

Question

我正在使用此处为 NodeJS 找到的手牌评估器:

https://github.com/chenosaurus/poker-evaluator

它效果很好，而且评估牌的速度非常快。但是，我想用它来编写一个脚本来计算赢得对手牌局的机会百分比。

例如，两个玩家有两只手:[Ac, 8c] Vs [9d,9h] 等。

我尝试过循环遍历所有可能的板卡，例如:

var cards = [
    "2c","3c","4c","5c","6c","7c","8c","9c","Tc","Jc","Qc","Kc","Ac",
    "2d","3d","4d","5d","6d","7d","8d","9d","Td","Jd","Qd","Kd","Ad",
    "2h","3h","4h","5h","6h","7h","8h","9h","Th","Jh","Qh","Kh","Ah",
    "2s","3s","4s","5s","6s","7s","8s","9s","Ts","Js","Qs","Ks","As",
];

var hand = ["As", "Ks"];
var trials = 0;
for(i=0;i<cards.length;i++) {
    for(j=i+1;j<cards.length;j++) {
        for(k=j+1;k<cards.length;k++) {
            for(l=k+1;l<cards.length;l++) {
                for(m=l+1;m<cards.length;m++) {             
                    trials++;
                    var nh = hand.slice();
                    nh.push(cards[i]);
                    nh.push(cards[j]);
                    nh.push(cards[k]);
                    nh.push(cards[l]);
                    nh.push(cards[m]);

                    PokerEvaluator.evalHand(nh);
                }
            }
        }
    }
}

显然这还没有完成(它不会检查手牌的排名或进行比较)，但这是我所知道的评估两只手牌所有可能的棋盘组合的唯一方法。

尽管算法每秒能够评估数百万只手，但它的速度非常慢。有没有更好的方法来相互检查两只手，而不是在所有可能的评估中使用 for 循环？

Answer 1

最简单的方法是通过蒙特卡罗。基本上，您只需随机生成剩下的手牌几千次，然后计算获胜的次数并除以生成的手牌总数。您玩的手牌越多，结果就越准确。