背包問題 | JavaScript 程式專案

{"id":114884,"student_id":10,"content":"// // 三個等級 level 1 ~ 3\n// level = 3;\n\n// var best = 0;\n// var bestValue = 0;\n\n// for (var i=0; i\u003c(2**15); i++) {\n//     var b = i.toString(2);\n//     var w = 0;\n//     var v = 0;\n//     for (var x=0; x\u003c15; x++) {\n//         if (b[x] == '1') {\n//             w += shells[x].weight;\n//             v += shells[x].value;\n//         }\n//     }\n//     if (w \u003c= 3000 \u0026\u0026 v \u003e bestValue) {\n//         bestValue = v;\n//         best = b;\n//     }\n// }\n\n// for (var i=0; i\u003c15; i++) {\n//     if (best[i] == '1') {\n//         take(shells[i]);\n//     }\n// }","created_at":"2019-12-20T14:00:31.642+08:00","updated_at":"2020-04-24T22:12:02.147+08:00","name":"背包問題","language":"javascript","screenshot":{"url":"https://cdn6.koding.school/uploads/project/screenshot/114884/93f61382d3c3970cd5e097c57d3587a7.jpg"},"parent_id":2,"plugin":"setBackdrop(\"#222\");\n\nvar level = 1;\n\nvar env = (function () {\n\n    var shells = [\n        createSprite('shell_0.png'),\n        createSprite('shell_1.png'),\n        createSprite('shell_2.png'),\n        createSprite('shell_3.png'),\n        createSprite('shell_4.png'),\n        createSprite('shell_5.png'),\n        createSprite('shell_6.png'),\n        createSprite('shell_7.png'),\n        createSprite('shell_8.png'),\n        createSprite('shell_z.png'),\n        createSprite('shell_10.png'),\n        createSprite('shell_11.png'),\n        createSprite('shell_12.png'),\n        createSprite('shell_13.png'),\n        createSprite('shell_2.png'),\n    ];\n    \n    var bag = [];\n\n    var values = [150, 220, 220, 290, 425, 475, 470, 615, 610, 720, 990, 850, 900, 1200];\n    var weight = [100, 210, 230, 330, 390, 470, 450, 610, 595, 710, 800, 890, 900, 1250];\n    \n    var limit = [0, 1000, 2000, 3000];\n\n    shells.forEach((s, idx) =\u003e {\n        s.scale = 0.3;\n        s.opacity = 0.5;\n        s.x = 106 + 106*(idx%5);\n        s.y = 120 + 120*(Math.floor(idx/5))\n        s.value = values[idx];\n        s.weight = weight[idx];\n        \n        s.on('click', function () {\n            this.enlarge = true;\n            var idx = bag.indexOf(this);\n            if (idx != -1)  bag.splice(idx, 1);\n            else bag.push(this);\n        });\n    });\n    \n    forever(function(){\n        \n        if (level == 1) {\n            while (shells.length \u003e 5) shells.pop().destroy();\n        }\n        else if (level == 2) {\n            while (shells.length \u003e 10) shells.pop().destroy();\n        }\n        else if (level == 3) {\n            \n        } else {\n            level = 1;\n        }\n        \n        shells.forEach(function (s) {\n            if(s.touched(cursor)) {\n                if (cursor.isDown) s.scale = 0.35;\n                else s.scale = 0.3;\n                s.opacity = 1;\n                print(`價格 ${s.value} 元`,    cursor.x - 40, cursor.y + 20, 'white');\n                print(`重量 ${s.weight} 公斤`, cursor.x - 40, cursor.y + 40, 'white');\n            } else {\n                s.opacity = .5;\n            }\n        });\n        \n        var w = 0;\n        var v = 0;\n        bag.forEach(function (s) {\n            w += s.weight;\n            v += s.value;\n            s.opacity = 1;\n        });\n        print(`上限 ${limit[level]}`, 80, 30, 'white', 25);\n        print(`重量: ${w}`, 240, 30, w \u003c limit[level] ? 'white': 'orange', 25);\n        print(`價格: ${v}`, 400, 30, 'white', 25);\n    });\n    \n    return {\n        shells: shells,\n        bag: bag,\n        take: bag.push.bind(bag)\n    }\n})();\n\nvar shells = env.shells;\nvar take = env.take;\n","description":null,"note":null,"status":"public","like_student_ids":[],"is_featured":false,"views":269,"hashid":"882s9v3k","is_content_changed":false,"review_status":"unsubmitted","submitted_at":null,"reviewed_at":null,"advise":null,"is_deleted":false}

[{"id":1964162,"file_name":"shell_10.png","project_id":114884,"asset_id":172909,"created_at":"2019-12-20T14:00:42.778+08:00","updated_at":"2019-12-20T14:00:42.778+08:00"},{"id":1964163,"file_name":"shell_11.png","project_id":114884,"asset_id":172910,"created_at":"2019-12-20T14:00:42.783+08:00","updated_at":"2019-12-20T14:00:42.783+08:00"},{"id":1964164,"file_name":"shell_12.png","project_id":114884,"asset_id":172911,"created_at":"2019-12-20T14:00:42.787+08:00","updated_at":"2019-12-20T14:00:42.787+08:00"},{"id":1964165,"file_name":"shell_6.png","project_id":114884,"asset_id":172912,"created_at":"2019-12-20T14:00:42.792+08:00","updated_at":"2019-12-20T14:00:42.792+08:00"},{"id":1964166,"file_name":"shell_13.png","project_id":114884,"asset_id":172913,"created_at":"2019-12-20T14:00:42.796+08:00","updated_at":"2019-12-20T14:00:42.796+08:00"},{"id":1964167,"file_name":"shell_3.png","project_id":114884,"asset_id":172914,"created_at":"2019-12-20T14:00:42.800+08:00","updated_at":"2019-12-20T14:00:42.800+08:00"},{"id":1964168,"file_name":"shell_4.png","project_id":114884,"asset_id":172915,"created_at":"2019-12-20T14:00:42.804+08:00","updated_at":"2019-12-20T14:00:42.804+08:00"},{"id":1964169,"file_name":"shell_2.png","project_id":114884,"asset_id":172916,"created_at":"2019-12-20T14:00:42.808+08:00","updated_at":"2019-12-20T14:00:42.808+08:00"},{"id":1964170,"file_name":"shell_1.png","project_id":114884,"asset_id":172917,"created_at":"2019-12-20T14:00:42.813+08:00","updated_at":"2019-12-20T14:00:42.813+08:00"},{"id":1964171,"file_name":"shell_z.png","project_id":114884,"asset_id":172918,"created_at":"2019-12-20T14:00:42.817+08:00","updated_at":"2019-12-20T14:00:42.817+08:00"},{"id":1964172,"file_name":"shell_8.png","project_id":114884,"asset_id":172919,"created_at":"2019-12-20T14:00:42.821+08:00","updated_at":"2019-12-20T14:00:42.821+08:00"},{"id":1964173,"file_name":"shell_7.png","project_id":114884,"asset_id":172920,"created_at":"2019-12-20T14:00:42.825+08:00","updated_at":"2019-12-20T14:00:42.825+08:00"},{"id":1964174,"file_name":"shell_5.png","project_id":114884,"asset_id":172921,"created_at":"2019-12-20T14:00:42.829+08:00","updated_at":"2019-12-20T14:00:42.829+08:00"},{"id":1964175,"file_name":"shell_0.png","project_id":114884,"asset_id":172922,"created_at":"2019-12-20T14:00:42.834+08:00","updated_at":"2019-12-20T14:00:42.834+08:00"}]