1A2B 解題副本 | JavaScript 程式專案

{"id":47415,"student_id":283,"content":"// 預設程式\nwhen(\"click\", function () {\n    guess(prompt());\n});\n\nvar list = [];\nfor (var i = 123; i \u003c= 9876; i++) {\n    var t = i.toString();\n    //防止開頭為0消失\n    if (t.length \u003c= 3) {\n        t = \"0\"+t\n    }\n    if (t[0] != t[1] \u0026\u0026 \n        t[0] != t[2] \u0026\u0026 \n        t[0] != t[3] \u0026\u0026 \n        t[1] != t[2] \u0026\u0026 \n        t[1] != t[3] \u0026\u0026 \n        t[2] != t[3]) {\n        list.push(t);\n    }\n}\n//使用排除演算法猜出答案\nwhile (list.length \u003e= 0) {\n    var g = list[0];\n    //猜第一次抓結果\n    var result = guess(g);\n    //如果猜到4個A就結束\n     if(result.a==4) break;\n     \n     for(var i=0; i\u003c list.length; i++){\n         var d=diff(list[i],g);\n         if(d.a!=result.a || d.b!= result.b){\n             //移除不可能的數列\n             list.splice(i,1);\n         }\n     }\n     \n}\n\n\n// 判斷兩組相似，返回 a、b\nfunction diff(num1, num2) {\n    var a = 0;\n    var b = 0;\n    for (var i = 0; i \u003c 4; i++) {\n        var idx = num1.indexOf(num2[i]);\n        if (idx != -1) {\n            if (idx == i) {\n                a++;\n            } else {\n                b++;\n            }\n        }\n    \n    }\n        return {\n            a: a, b: b\n        }\n\n}\n","created_at":"2018-11-03T10:19:09.589+08:00","updated_at":"2019-10-05T18:30:28.078+08:00","name":"1A2B 解題 副本","language":"javascript","screenshot":{"url":"https://cdn7.koding.school/uploads/project/screenshot/47415/fdb193d13e9a2bed99858f5585097c43.jpg"},"parent_id":33939,"plugin":"setBackdrop('black');\n\nvar guess = (function () {\n\n    var answer = ''; // 正確答案\n    var logs = []; // 記錄玩家所猜的數字與結果\n\n    // 產生答案\n    var numbers = '0123456789';\n    for (var i = 0; i \u003c 4; i++) {\n        var rand = Math.floor(numbers.length * Math.random());\n        answer += numbers[rand];\n        numbers = numbers.slice(0, rand) + numbers.slice(rand + 1);\n    }\n\n    function guess(num) {\n        var a = 0;\n        var b = 0;\n        for (var i = 0; i \u003c 4; i++) {\n            var idx = answer.indexOf(num[i]);\n            if (idx != -1) i == idx ? a++ : b++;\n        }\n        logs.unshift({num: num, a: a, b: b});\n        return { a: a, b: b }\n    }\n\n    forever(function(){\n        for (var i=0; i\u003clogs.length \u0026\u0026 i\u003c100; i++) {\n            var l = logs[i];\n            var s = `${logs.length - i}. ${l.num}  ${l.a}A${l.b}B`;\n            // 補上對齊用的空格\n            while(s.length \u003c 15) s = ' ' + s;\n            print(s, 30, 20 + 30*i, l.a == 4 ? 'gold' : 'white', 25, 'monospace');\n        }\n    });\n\n    return guess;\n\n})();","description":null,"note":null,"status":"public","like_student_ids":[],"is_featured":false,"views":87,"hashid":"gk4s5pye","is_content_changed":false,"review_status":"unsubmitted","submitted_at":null,"reviewed_at":null,"advise":null,"is_deleted":false}