蒙地卡羅求 PI 副本 | JavaScript 程式專案

{"id":85088,"student_id":253,"content":"stopRendering();\npen.size = 0;\npen.fillColor = '#7B68EE'\npen.drawRect(0, 0, 640, 480)\n\nvar a = 0;\nvar b = 0;\n\n\nforever(function() {\n    for (var i = 0; i \u003c 1000; i++) {\n\n        var x = Math.random()*480;\n        var y = Math.random()*480;\n        var c = (240-x)*(240-x)+(240-y)*(240-y);\n        c = Math.sqrt(c)\n\n        if (c \u003c 240) {\n            pen.fillColor = 'orange';\n            b++;\n        } else {\n            pen.fillColor = 'red';\n\n        }\n        a++;\n\n        pen.drawRect(x, y, 1, 1)\n\n\n    }\n    pen.fillColor = 'white';\n    pen.drawRect(0, 0, 200, 35);\n    print(\"PI: \"+b*4/a, 10, 10);\n\n\n})","created_at":"2019-07-28T10:16:30.524+08:00","updated_at":"2019-10-16T02:23:56.332+08:00","name":"蒙地卡羅求 PI 副本","language":"javascript","screenshot":{"url":"https://cdn4.koding.school/uploads/project/screenshot/85088/1b77748910bfcc16f767dc90b4699669.jpg"},"parent_id":31606,"plugin":"","description":null,"note":null,"status":"public","like_student_ids":[],"is_featured":false,"views":98,"hashid":"gk4sqnzd","is_content_changed":false,"review_status":"unsubmitted","submitted_at":null,"reviewed_at":null,"advise":null,"is_deleted":false}