{"id":157,"date":"2015-03-14T17:15:32","date_gmt":"2015-03-14T09:15:32","guid":{"rendered":"http:\/\/sqrt-1.me\/?p=157"},"modified":"2016-11-19T14:51:48","modified_gmt":"2016-11-19T06:51:48","slug":"%e3%80%90pi-day%e3%80%91%e4%b8%80%e6%ae%b5%e5%be%88%e7%9f%ad%e7%9a%84%e8%ae%a1%e7%ae%97%e5%9c%86%e5%91%a8%e7%8e%87%e7%9a%84%e4%bb%a3%e7%a0%81","status":"publish","type":"post","link":"https:\/\/sqrt-1.me\/?p=157","title":{"rendered":"\u3010\u03c0 Day\u3011\u4e00\u6bb5\u5f88\u77ed\u7684\u8ba1\u7b97\u5706\u5468\u7387\u7684\u4ee3\u7801"},"content":{"rendered":"<p>\u4eca\u5929\u662f3\u670814\u65e5\uff0c\u5706\u5468\u7387\u65e5\u3002<\/p>\n<p>\u6211\u5728\u7f51\u4e0a\u770b\u5230\u4e86\u4e00\u6bb5\u5f88\u77ed\u7684\u8ba1\u7b97\u5706\u5468\u7387\u7684\u4ee3\u7801\uff0c\u53ef\u4ee5\u7b97\u52308000\u4f4d\u3002\u6211\u628a\u7a0b\u5e8f\u8f93\u51fa\u7684\u7ed3\u679c\u548cMathematica\u7684\u7ed3\u679c\u6bd4\u8f83\u4e86\u4e00\u4e0b\uff0c\u9a8c\u8bc1\u4e86\u7a0b\u5e8f\u662f\u6b63\u786e\u7684\u3002<\/p>\n<p>\u901a\u8fc7\u66f4\u6539c\u7684\u503c\u548cf\u6570\u7ec4\u7684\u5927\u5c0f\uff0c\u53ef\u4ee5\u7b97\u5230\u66f4\u591a\u7684\u4f4d\u3002<\/p>\n<p>\u6211\u6ca1\u5f04\u660e\u767d\u8fd9\u6bb5\u4ee3\u7801\u7684\u539f\u7406\uff0c\u5982\u679c\u6709\u8c01\u77e5\u9053\uff0c\u6b22\u8fce\u5728\u56de\u590d\u4e2d\u544a\u8bc9\u6211\u3002<\/p>\n<p>\u7b80\u77ed\u7248\uff1a<\/p>\n<pre class=\"lang:c decode:true \" >\r\n#include&lt;stdio.h&gt;\r\nint a=10000,b=0,c=28000,d,e=0,f[28010],g;\r\nmain(){\r\nfor(;b-c;)f[b++]=a\/5;\r\nfor(;d=0,g=c*2;c-=14,printf(&quot;%04d&quot;,e+d\/a),e=d%a)\r\nfor(b=c;d+=f[b]*a,f[b]=d%--g,d\/=g--,--b;d*=b);\r\n}\r\n<\/pre>\n<p>\u6b63\u5e38\u7248\uff1a<br \/>\n<!--more--><\/p>\n<pre class=\"lang:c decode:true \" >\r\n#include&lt;stdio.h&gt;\r\n\r\nint main(){\r\n    int f[28010],a=10000,b=0,c=28000,d,e=0,g;\r\n    while(b&lt;c){\r\n        f[b]=a\/5;\r\n        b++;\r\n    }\r\n    while(c&gt;0){\r\n        d=0;\r\n        g=c*2;\r\n        b=c;\r\n        while(1){\r\n            d+=f[b]*a;\r\n            g--;\r\n            f[b]=d%g;\r\n            d\/=g;\r\n            g--;\r\n            b--;\r\n            if(b==0)break;\r\n            d*=b;\r\n        }\r\n        c-=14;\r\n        printf(&quot;%04d&quot;,e+d\/a);\r\n        e=d%a;\r\n    }\r\n    return 0;\r\n}\r\n<\/pre>\n","protected":false},"excerpt":{"rendered":"<p>\u4eca\u5929\u662f3\u670814\u65e5\uff0c\u5706\u5468\u7387\u65e5\u3002 \u6211\u5728\u7f51\u4e0a\u770b\u5230\u4e86\u4e00\u6bb5\u5f88\u77ed\u7684\u8ba1\u7b97\u5706\u5468\u7387\u7684\u4ee3\u7801\uff0c\u53ef\u4ee5\u7b97\u52308000\u4f4d\u3002\u6211\u628a\u7a0b\u5e8f\u8f93\u51fa\u7684\u7ed3\u679c &hellip; <a href=\"https:\/\/sqrt-1.me\/?p=157\" class=\"more-link\">\u7ee7\u7eed\u9605\u8bfb<span class=\"screen-reader-text\">\u201c\u3010\u03c0 Day\u3011\u4e00\u6bb5\u5f88\u77ed\u7684\u8ba1\u7b97\u5706\u5468\u7387\u7684\u4ee3\u7801\u201d<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":"","_links_to":"","_links_to_target":""},"categories":[2],"tags":[],"class_list":["post-157","post","type-post","status-publish","format-standard","hentry","category-c-language"],"_links":{"self":[{"href":"https:\/\/sqrt-1.me\/index.php?rest_route=\/wp\/v2\/posts\/157","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/sqrt-1.me\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/sqrt-1.me\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/sqrt-1.me\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/sqrt-1.me\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=157"}],"version-history":[{"count":3,"href":"https:\/\/sqrt-1.me\/index.php?rest_route=\/wp\/v2\/posts\/157\/revisions"}],"predecessor-version":[{"id":342,"href":"https:\/\/sqrt-1.me\/index.php?rest_route=\/wp\/v2\/posts\/157\/revisions\/342"}],"wp:attachment":[{"href":"https:\/\/sqrt-1.me\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=157"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/sqrt-1.me\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=157"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/sqrt-1.me\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=157"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}