js计算德州扑克牌面值的方法

var Poker = function(n){
    this.num = (n % 13) + 2;
    this.ch = this.num > 9 ? ("abcdef"[this.num-10]) : this.num;
    this.show = "0,1,2,3,4,5,6,7,8,9,10,J,Q,K,A".split(",")[this.num];
    this.color = "♠♥♣♦"[n / 13 | 0];
    this.toString = function(){
        return this.color + this.show;
    };
};
var z = function(arg){ //同花顺
    var a = arg,
        t = a[0];
    for (var i = 1; i < a.length; i++) {
        if( a[i].color === t.color && a[i].num === t.num + 1 ){
            t = a[i];
        }else if( i === a.length-1 && t.num === 5 && a[i].num === 14 && a[i].color === t.color){
            t = a[0];
        }else{
            return;
        }
    };
    return "z" + t.ch;
};
var y = function(arg){ //四条
    var a = arg.map(function(p){
            return p.ch;
        }).join(""),
        mat = a.match(/(w*)(w)222(w*)/);
    if( mat ){
        return "y"+mat[2]+mat[1]+mat[3];
    }
};
var x = function(arg){ //葫芦
    var a = arg.map(function(p){
            return p.ch;
        }).join(""),
        mat;
    if( mat = a.match(/(w)1(w)22/) ){
        return "x" + mat[2] + mat[1];
    }else if( mat = a.match(/(w)11(w)2/) ){
        return "x" + mat[1] + mat[2];
    }
};
var w = function(arg){ //同花
    var a = arg,
        t = a[0];
    for (var i = 1; i < a.length; i++) {
        if( a[i].color === t.color ){
            t = a[i];
        }else{
            return;
        }
    };
    return "w" + arg.map(function(p){
        return p.ch;
    }).join("");
};
var v = function(arg){ //顺子
    var a = arg,
        t = a[0];
    for (var i = 1; i < a.length; i++) {
        if( a[i].num === t.num + 1 ){
            t = a[i];
        }else if( i === a.length-1 && t.num === 5 && a[i].num === 14){
            t = a[0];
        }else{
            return;
        }
    };
    return "v" + t.ch;
};
var u = function(arg){ //三条
    var a = arg.map(function(p){
            return p.ch;
        }).join(""),
        mat;
    if( mat = a.match(/(w*)(w)22(w*)/) ){
        return "u" + mat[2] + mat[1] + mat[3];
    }
};
var t = function(arg){ //两对
    var a = arg.map(function(p){
            return p.ch;
        }).join(""),
        mat;
    if( mat = a.match(/(w*)(w)2(w)3(w*)/) ){
        return "t" + mat[3] + mat[2] + mat[1] + mat[4];
    }else if( mat = a.match(/(w)1(w)(w)3/) ){
        return "t" + mat[3] + mat[1] + mat[2];
    }
};
var s = function(arg){ //一对
    var a = arg.map(function(p){
            return p.ch;
        }).join(""),
        mat;
    if( mat = a.match(/(w*)(w)2(w*)/) ){
        return "s" + mat[2] + mat[1] + mat[3];
    }
};
var r = function(arg){ //高牌
    return arg.map(function(p){
        return p.ch;
    }).join("");
};
var score = function(){
    var a = [].map.call(arguments, function(p){
        return new Poker(p);
    }).sort(function(p1,p2){
        return p1.num - p2.num;
    });
    console.log( a.join(",") );
    return z(a) || y(a) || x(a) || w(a) || v(a) || u(a) || t(a) || s(a) || r(a);
};
console.log( score( 50, 49, 47, 46, 48 ) ); // 同花顺
console.log( score( 36, 49, 23, 10, 48 ) ); // 四条
console.log( score( 36, 49, 23, 22, 48 ) ); // 葫芦
console.log( score( 50, 40, 47, 43, 48 ) ); // 同花
console.log( score( 50, 36, 47, 46, 48 ) ); // 顺子
console.log( score( 36, 49, 25, 22, 48 ) ); // 两对
console.log( score( 36, 49, 20, 27, 47 ) ); // 一对
console.log( score( 36, 11, 20, 27, 47 ) ); // 高牌