{"id":103496,"student_id":1981,"content":"// 可以修改預設密碼來測試\r\n// setPassword('password');\r\nvar chars= ' abcdefghijklmnopqrstuwvxyzABCDEFGHIJKLMNOPQRSTUVWXYZ';\r\nvar pops=[];//宣告pops用來存放20組密碼的陣列\r\n\r\n//產生20組亂數的密碼cp3\r\nwhile(pops.length\u003c20){ \r\n var gens='';//宣告變數用來儲存新產生的密碼\r\n for(var i=0;i\u003c23;i++){//用迴圈產生長度23的密碼 \r\n gens+=chars[Math.floor(Math.random()*53)];\r\n }\r\n pops.push(gens);//將新產生密碼放入pops陣列\r\n}\r\n\r\n\r\n\r\n\r\n// 不斷嘗試密碼並將分數高的排在前面,產生下一代的密碼\r\nforever(function() {\r\n var children=[];\r\n pops.sort(function(a,b){ //利用排序演算法排序\r\n return password(b)-password(a); \r\n });\r\n for(var i=0;i\u003c20;i++){ \r\n var genes=crossover(pops[0],pops[1]);\r\n children.push(genes);\r\n }\r\n pops=children;\r\n})\r\n\r\n// 將兩組密碼進行組合\r\nfunction crossover (a, b) {\r\n var gens='';\r\n for(var i=0;i\u003c23;i++){ \r\n if(Math.random()\u003c0.05){ \r\n gens+=chars[Math.floor(Math.random()*53)];\r\n }else if(Math.random()\u003c0.5){ \r\n gens+=a[i];\r\n }else{ \r\n gens+=b[i];\r\n }\r\n }\r\n return gens;\r\n}","created_at":"2019-10-31T16:26:48.608+08:00","updated_at":"2020-07-09T19:39:27.591+08:00","name":"遺傳演算法 副本","language":"javascript","screenshot":{"url":"https://cdn0.koding.school/uploads/project/screenshot/103496/9588740851eb96786280b3ad86ab796e.jpg"},"parent_id":33940,"plugin":"setBackdrop('hacker1.jpg', 0, 0, 640, 480);\n\nvar game = (function () {\n \n var log = [];\n var key = 'I love Koding very much';\n var gameOver = false;\n \n when('click', function () {\n if (prompt('請輸入密碼?') == key) {\n setBackdrop('hacker2.jpg', 0, 0, 640, 480);\n setTimeout(function() {\n setBackdrop('hacker3.jpg', 0, 0, 640, 480);\n stop();\n }, 1000);\n }\n });\n \n function password (passwd) {\n if (gameOver) return;\n if (passwd == key) gameOver = true;\n \n log.unshift(passwd);\n var count = 0;\n for (var i = 0; i \u003c key.length; i++) {\n if (key[i] == passwd[i]) count++;\n }\n return count;\n }\n \n function setPassword (passwd) {\n key = passwd;\n }\n \n forever(function(){\n for (var i=0; i\u003c14 \u0026\u0026 i\u003clog.length; i++) {\n print(log[i], 50, 35 + 20*i, log[i] == key ? 'gold' : 'white');\n }\n });\n\n return {\n password: password,\n setPassword: setPassword\n }\n})();\n\nvar password = game.password;\nvar setPassword = game.setPassword;\n","description":null,"note":null,"status":"public","like_student_ids":[],"is_featured":false,"views":51,"hashid":"zpesezpk","is_content_changed":false,"review_status":"unsubmitted","submitted_at":null,"reviewed_at":null,"advise":null,"is_deleted":false}
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