{"id":67203,"student_id":45,"content":"// 可以修改預設密碼來測試\n// setPassword('password');\nvar chars = \"abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ \";\nvar pops = [];\nfor (var j = 0; j \u003c 20; j++) {\n var gen = \"\";\n for (var i = 0; i \u003c 23; i++) {\n var ran = Math.floor(Math.random()*chars.length);\n gen += chars[ran];\n }\n pops.push(gen);\n}console.log(pops);\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\nforever(function() {\n var children=[];\n pops.sort(function(a, b) {\n return password(b)-password(a);\n });\n for(var j = 0; j \u003c 20; j++){\n var gens = crossover(pops[0], pops[1]);\n children.push(gens);\n }\n pops=children;\n});\n\n// 將兩組密碼進行組合\nfunction crossover (a, b) {\n var gens = \"\";\n for (var k = 0; k \u003c 23; k++) {\n if(Math.random() \u003c 0.05){\n gens+=chars[Math.floor(Math.random()*chars.length)];\n }else if (Math.random() \u003c 0.5) {\n gens += b[k];\n } else {\n gens += a[k];\n }\n }\n return gens;\n}","created_at":"2019-05-11T13:44:03.495+08:00","updated_at":"2019-10-09T09:28:08.866+08:00","name":"遺傳演算法 副本","language":"javascript","screenshot":{"url":"https://cdn0.koding.school/uploads/project/screenshot/67203/c89f39e6e3175b5a6a716517742703b8.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":56,"hashid":"ej9sw5ke","is_content_changed":false,"review_status":"unsubmitted","submitted_at":null,"reviewed_at":null,"advise":null,"is_deleted":false}
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