1A2B 解題副本 | JavaScript 程式專案

{"id":147598,"student_id":1404,"content":"// 預設程式\nwhen(\"click\", function () {\n    guess(prompt());\n});\n\n// 產生所有可能的組合\nvar list = [];\n//noprotect\nfor (var i = 123; i \u003c= 9876; i++) {\n    var t = i.toString();\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}\nconsole.log(list.length);\n\n// 根據猜的結果移除不可能的選項\n// noprotect\nwhile (list.length \u003e= 0) {\n    var g = list[0]; // 取第一個來猜 0123\n    var result = guess(g); //回傳 g 跟答案相比得到 {A:2, B:1}\n\n    if (result.a == 4) break;\n\n    for (var i = 0; i \u003c list.length; i++) {\n        var d = diff(list[i], g); //{A:3, B:0}\n        if (d.a != result.a || d.b != result.b) { //3A0B == 2A1B???\n            list.splice(i, 1);\n        }\n    }\n}\n\n// 判斷兩組相似，返回 a、b\nfunction diff(ans, guess) { //ans = \"2538\", guess = \"4367\"\n    var a = 0;\n    var b = 0;\n    for (var i = 0; i \u003c 4; i++) {\n        var idx = ans.indexOf(guess[i]); \n        if (idx != -1) { //可能是a可能是b\n            if (idx == i) {\n                a++;\n            } else {\n                b++;\n            }\n        }\n    }\n    return {\n        a: a, b: b\n    }\n}","created_at":"2020-05-09T15:52:21.198+08:00","updated_at":"2020-05-16T16:13:48.397+08:00","name":"1A2B 解題 副本","language":"javascript","screenshot":{"url":"https://cdn3.koding.school/uploads/project/screenshot/147598/2d1c94dec9b0784e2c3ff600f4f662ed.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":57,"hashid":"6rpsgvwz","is_content_changed":false,"review_status":"unsubmitted","submitted_at":null,"reviewed_at":null,"advise":null,"is_deleted":false}