蒙地卡羅求 PI 副本 | JavaScript 程式專案

{"id":41842,"student_id":2328,"content":"wstopRendering();\npen.size = 0;\npen.fillColor = 'white'\npen.drawRect(0,0,640,480);\n\n\n\nvar a = 0\nvar b = 0\n\nforever(function(){\n    for(i = 1;i\u003c=1000;i++){\n        var x = Math.random()*480\n        var y = Math.random()*480\n        var c = Math.sqrt((240-y)*(240-y)+(240-x)*(240-x))\n        if(c\u003c240){\n            pen.fillColor = 'orange'\n            pen.drawRect(x,y,1,1)  \n            b+=1\n            a+=1\n        }else{\n            pen.fillColor = 'red'\n            pen.drawRect(x,y,1,1)\n            a+=1\n        }\n    }\n    var PI = b*4/a\n    pen.fillColor = 'white'\n    pen.drawRect(0,0,200,35)\n    print('PI:'+PI,10,10,'black')\n})","created_at":"2018-09-08T19:01:30.562+08:00","updated_at":"2019-05-06T09:18:02.811+08:00","name":"蒙地卡羅求 PI 副本","language":"javascript","screenshot":{"url":"https://cdn2.koding.school/uploads/project/screenshot/41842/83f376711e7dcd55fd54a075c390b519.jpg"},"parent_id":31606,"plugin":"","description":null,"note":null,"status":"public","like_student_ids":[],"is_featured":false,"views":69,"hashid":"4y3s36n6","is_content_changed":false,"review_status":"unsubmitted","submitted_at":null,"reviewed_at":null,"advise":null,"is_deleted":false}