{"id":31612,"date":"2023-11-04T06:46:14","date_gmt":"2022-12-22T21:43:11","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e4%bd%bf%e7%94%a8java%e8%af%ad%e8%a8%80%e8%ae%a1%e7%ae%97%e5%9c%86%e5%91%a8%e7%8e%87\/"},"modified":"2024-05-04T07:26:28","modified_gmt":"2024-05-03T23:26:28","slug":"%e4%bd%bf%e7%94%a8java%e8%af%ad%e8%a8%80%e8%ae%a1%e7%ae%97%e5%9c%86%e5%91%a8%e7%8e%87","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e4%bd%bf%e7%94%a8java%e8%af%ad%e8%a8%80%e8%ae%a1%e7%ae%97%e5%9c%86%e5%91%a8%e7%8e%87\/","title":{"rendered":"\u4f7f\u7528Java\u8bed\u8a00\u8ba1\u7b97\u5706\u5468\u7387"},"content":{"rendered":"

\u9996\u5148<\/h1>\n

\u5728\u8fd9\u7bc7\u6587\u7ae0\u4e2d\uff0c\u6211\u4eec\u5c06\u4f7f\u7528\u4ee5\u4e0b\u7684\u516c\u5f0f\uff0c\u5728Java\u4e2d\u8ba1\u7b97\u5706\u5468\u7387\u3002<\/p>\n

\\frac{4}{\\pi}=\\sum_{n=0}^\\infty \\frac{(-1)^n(4n)!(1123+21460n)}{882^{2n+1}(4^nn!)^4}\r\n<\/code><\/pre>\n
\u62c9\u9a6c\u52aa\u91d1\uff081887\u5e7412\u670822\u65e5\u81f31920\u5e744\u670826\u65e5\uff09\u7684\u516c\u5f0f\u3002
\n\u4ed4\u7ec6\u89c2\u5bdf\uff0c\u4f1a\u8ba9\u4eba\u4e0d\u7981\u601d\u8003\u4ed6\u662f\u5982\u4f55\u60f3\u51fa\u8fd9\u4e2a\u516c\u5f0f\u7684\uff0c\u771f\u7684\u80fd\u5f97\u51fa\u5706\u5468\u7387\u5417\uff1f\u8ba9\u4eba\u611f\u5230\u975e\u5e38\u795e\u5947\u3002<\/p>\n
\uff08\u6211\u4e0d\u77e5\u9053\u662f\u5173\u4e8e\u54ea\u4e2a\u65b9\u7a0b\u5f0f\u7684\u5bf9\u8bdd\uff09\uff0c\u4ee5\u4e0b\u7684\u5bf9\u8bdd\u4e5f\u5145\u6ee1\u795e\u79d8\u8272\u5f69\u3002<\/p>\n
\u54c8\u8fea\u6559\u6388\uff1a\u201c\u80fd\u544a\u8bc9\u6211\u4f60\u662f\u5982\u4f55\u60f3\u5230\u8fd9\u4e2a\u6570\u5b66\u516c\u5f0f\u7684\u5417\uff1f\u201d
\n\u62c9\u9a6c\u52aa\u8d3e\u6069\uff1a\u201c\u8bf7\u76f8\u4fe1\uff0c\u662f\u7eb3\u739b\u5409\u5229\u5973\u795e\u7ad9\u5728\u6211\u7684\u6795\u8fb9\u6559\u7ed9\u6211\u7684\u3002\u201d<\/p>\n
\u6211\u771f\u7684\u60f3\u8bd5\u7740\u8fdb\u884c\u8ba1\u7b97\u3002<\/p>\n
\u7f16\u7a0b<\/h1>\n
\u57fa\u672c\u4e0a\uff0c\u8fd9\u662f\u4e00\u4e2a\u6ca1\u6709\u521b\u610f\u7684\u7a0b\u5e8f\u3002<\/p>\n
    \n
  • \n
      \u5206\u5b50\u3068\u5206\u6bcd\u306f\u305d\u308c\u305e\u308cBigInteger\u3067\u8a08\u7b97\u3057\u3066\u3044\u307e\u3059\u3002<\/ul>\n<\/li>\n<\/ul>\n
       <\/p>\n
        \n
      • \n
          \u5206\u6570\u3092\u5272\u308a\u7b97\u3059\u308b\u3068\u3053\u308d\u304b\u3089BigDecimal\u3067\u8a08\u7b97\u3057\u307e\u3059(\u3053\u306e\u30d7\u30ed\u30b0\u30e9\u30e0\u3067\u306f\u3001\u3053\u3053\u3067\u306f\u3058\u3081\u3066\u7cbe\u5ea6\u6307\u5b9a\u3057\u307e\u3059)\u3002<\/ul>\n<\/li>\n<\/ul>\n
           <\/p>\n
            \n
          • \n
              \u968e\u4e57\u306f\u540c\u3058\u8a08\u7b97\u3092\u4f55\u5ea6\u3082\u3059\u308b\u306e\u306f\u3042\u307e\u308a\u306b\u3072\u3069\u3044\u306e\u3067\u3001\u524d\u306e\u8a08\u7b97\u7d50\u679c\u3092\u518d\u5229\u7528\u3059\u308b\u3088\u3046\u300c\u5de5\u592b\u300d\u3057\u3066\u3044\u307e\u3059\u3002<\/ul>\n<\/li>\n<\/ul>\n
               <\/p>\n
                \u6700\u5f8c\u306e\u65b9\u306e\u6841\u306f\u8aa4\u5dee\u3092\u542b\u307f\u307e\u3059\uff08\u8aa4\u5dee\u306f\u300c\u7e70\u308a\u8fd4\u3057\u56de\u6570\u300d\u306b\u6bd4\u4f8b\u3057\u307e\u3059\uff09\u3002<\/ul>\n
                \/**\r\n * \u5186\u5468\u7387\u3092\u8a08\u7b97\u3057\u307e\u3059\u3002\r\n *\/<\/span>\r\n\r\nimport<\/span> java.math.BigDecimal<\/span>;<\/span>\r\nimport<\/span> java.math.BigInteger<\/span>;<\/span>\r\nimport<\/span> java.math.RoundingMode<\/span>;<\/span>\r\n\r\npublic<\/span> class<\/span> RamaPi<\/span> {<\/span>\r\n    \/**\r\n     * \u968e\u4e57\u3092\u8a08\u7b97\u3057\u307e\u3059(\u76f4\u524d\u306e\u8a08\u7b97\u7d50\u679c\u3092\u518d\u5229\u7528\u3057\u307e\u3059)\u3002\r\n     *\/<\/span>\r\n    class<\/span> Facto<\/span> {<\/span>\r\n        \/** \u76f4\u524d\u306e\u5f15\u6570 *\/<\/span>\r\n        int<\/span> n<\/span> =<\/span> 1<\/span>;<\/span>\r\n        \/** \u76f4\u524d\u306e\u5024 *\/<\/span>\r\n        BigInteger<\/span> val<\/span> =<\/span> BigInteger<\/span>.<\/span>ONE<\/span>;<\/span>\r\n\r\n        BigInteger<\/span> calc<\/span>(<\/span>final<\/span> int<\/span> arg<\/span>)<\/span> {<\/span>\r\n            for<\/span> (<\/span> ;<\/span> n<\/span> <=<\/span> arg<\/span> ;<\/span> n<\/span>++)<\/span> {<\/span>\r\n                val<\/span> =<\/span> val<\/span>.<\/span>multiply<\/span>(<\/span>BigInteger<\/span>.<\/span>valueOf<\/span>(<\/span>n<\/span>));<\/span>\r\n            }<\/span>\r\n\r\n            return<\/span> val<\/span>;<\/span>\r\n        }<\/span>\r\n    }<\/span>\r\n\r\n    \/** \u968e\u4e57\u8a08\u7b97\u7528\uff11 *\/<\/span>\r\n    Facto<\/span> workFacto1<\/span> =<\/span> new<\/span> Facto<\/span>();<\/span>\r\n    \/** \u968e\u4e57\u8a08\u7b97\u7528\uff12 *\/<\/span>\r\n    Facto<\/span> workFacto2<\/span> =<\/span> new<\/span> Facto<\/span>();<\/span>\r\n    \/** \u5b9a\u6570\u300c882\u300d *\/<\/span>\r\n    static<\/span> final<\/span> BigInteger<\/span> VAL_882<\/span> =<\/span> BigInteger<\/span>.<\/span>valueOf<\/span>(<\/span>882<\/span>);<\/span>\r\n    \/** \u5b9a\u6570\u300c4\u300d *\/<\/span>\r\n    static<\/span> final<\/span> BigInteger<\/span> VAL_4<\/span> =<\/span> BigInteger<\/span>.<\/span>valueOf<\/span>(<\/span>4<\/span>);<\/span>\r\n\r\n    \/**\r\n     * \u30e9\u30de\u30cc\u30b8\u30e3\u30f3\u306e\u516c\u5f0f\u306e\u5206\u5b50\u3092\u8a08\u7b97\u3057\u307e\u3059\u3002\r\n     *\/<\/span>\r\n    BigInteger<\/span> bunsi<\/span>(<\/span>final<\/span> int<\/span> n<\/span>)<\/span> {<\/span>\r\n        final<\/span> int<\/span> sign<\/span> =<\/span> (<\/span>n<\/span>&<\/span>1<\/span>)<\/span> ==<\/span> 0<\/span> ?<\/span> 1<\/span> :<\/span> -<\/span>1<\/span>;<\/span>\r\n        final<\/span> BigInteger<\/span> a<\/span> =<\/span> workFacto1<\/span>.<\/span>calc<\/span>(<\/span>4<\/span> *<\/span> n<\/span>);<\/span>\r\n        final<\/span> BigInteger<\/span> b<\/span> =<\/span> BigInteger<\/span>.<\/span>valueOf<\/span>(<\/span>sign<\/span> *<\/span> (<\/span>1123<\/span> +<\/span> 21460<\/span>*<\/span>n<\/span>));<\/span>\r\n\r\n        return<\/span> a<\/span>.<\/span>multiply<\/span>(<\/span>b<\/span>);<\/span>\r\n    }<\/span>\r\n\r\n    \/**\r\n     * \u30e9\u30de\u30cc\u30b8\u30e3\u30f3\u306e\u516c\u5f0f\u306e\u5206\u6bcd\u3092\u8a08\u7b97\u3057\u307e\u3059\u3002\r\n     *\/<\/span>\r\n    BigInteger<\/span> bunbo<\/span>(<\/span>final<\/span> int<\/span> n<\/span>)<\/span> {<\/span>\r\n        final<\/span> BigInteger<\/span> a<\/span> =<\/span> VAL_882<\/span>.<\/span>pow<\/span>(<\/span>2<\/span>*<\/span>n<\/span>+<\/span>1<\/span>);<\/span>\r\n        final<\/span> BigInteger<\/span> b<\/span> =<\/span> VAL_4<\/span>.<\/span>pow<\/span>(<\/span>n<\/span>);<\/span>\r\n        final<\/span> BigInteger<\/span> c<\/span> =<\/span> workFacto2<\/span>.<\/span>calc<\/span>(<\/span>n<\/span>);<\/span>\r\n        final<\/span> BigInteger<\/span> d<\/span> =<\/span> b<\/span>.<\/span>multiply<\/span>(<\/span>c<\/span>).<\/span>pow<\/span>(<\/span>4<\/span>);<\/span>\r\n        return<\/span> a<\/span>.<\/span>multiply<\/span>(<\/span>d<\/span>);<\/span>\r\n    }<\/span>\r\n\r\n    \/**\r\n     * \u30e9\u30de\u30cc\u30b8\u30e3\u30f3\u306e\u516c\u5f0f\u304b\u3089\u3001\u5186\u5468\u7387\u3092\u6c42\u3081\u307e\u3059\u3002\r\n     *\/<\/span>\r\n    void<\/span> calc<\/span>(<\/span>final<\/span> int<\/span> digits<\/span>)<\/span> {<\/span>\r\n        BigDecimal<\/span> sum<\/span> =<\/span> BigDecimal<\/span>.<\/span>ZERO<\/span>;<\/span>\r\n\r\n        \/** \u52a0\u7b97\u3092\u6253\u3061\u5207\u308b\u6841\u6570\uff08\u3053\u306e\u6841\u6570\u672a\u6e80\u306f\u8db3\u305b\u307e\u305b\u3093\uff09 *\/<\/span>\r\n        final<\/span> BigDecimal<\/span> thr<\/span> =<\/span> BigDecimal<\/span>.<\/span>ONE<\/span>.<\/span>divide<\/span>(<\/span>BigDecimal<\/span>.<\/span>TEN<\/span>.<\/span>pow<\/span>(<\/span>digits<\/span>));<\/span>\r\n\r\n        \/** \u8a08\u7b97\u958b\u59cb\u3057\u305f\u6642\u9593 *\/<\/span>\r\n        long<\/span> t0<\/span> =<\/span> System<\/span>.<\/span>nanoTime<\/span>();<\/span>\r\n\r\n        int<\/span> iter<\/span> =<\/span> 0<\/span>;<\/span>\r\n        for<\/span> (<\/span> ;;<\/span> iter<\/span>++<\/span> )<\/span> {<\/span>\r\n            final<\/span> BigDecimal<\/span> bunbo<\/span> =<\/span> new<\/span> BigDecimal<\/span>(<\/span>bunbo<\/span>(<\/span>iter<\/span>));<\/span>\r\n            final<\/span> BigDecimal<\/span> bunsi<\/span> =<\/span> new<\/span> BigDecimal<\/span>(<\/span>bunsi<\/span>(<\/span>iter<\/span>));<\/span>\r\n\r\n            final<\/span> BigDecimal<\/span> adder<\/span> =<\/span> bunsi<\/span>.<\/span>divide<\/span>(<\/span>bunbo<\/span>,<\/span> digits<\/span>,<\/span> RoundingMode<\/span>.<\/span>HALF_EVEN<\/span>);<\/span>\r\n\r\n            if<\/span> (<\/span>adder<\/span>.<\/span>abs<\/span>().<\/span>compareTo<\/span>(<\/span>thr<\/span>)<\/span> <<\/span> 0<\/span>)<\/span> {<\/span>\r\n                break<\/span>;<\/span>\r\n            }<\/span>\r\n\r\n            \/* \u52a0\u7b97\u306e\u7d50\u679c\u3067\u3001sum\u3092\u66f8\u304d\u63db\u3048\u307e\u3059 *\/<\/span>\r\n            sum<\/span> =<\/span> sum<\/span>.<\/span>add<\/span>(<\/span>adder<\/span>);<\/span>\r\n\r\n            \/* \u6841\u6570\u304c\u5c0f\u3055\u3044\u5834\u5408\u3001\u53ce\u675f\u306e\u69d8\u5b50\u3092\u8868\u793a\u3057\u307e\u3059 *\/<\/span>\r\n            if<\/span> (<\/span>digits<\/span> <<\/span> 100<\/span>)<\/span> {<\/span>\r\n                System<\/span>.<\/span>out<\/span>.<\/span>println<\/span>(<\/span> BigDecimal<\/span>.<\/span>valueOf<\/span>(<\/span>4<\/span>).<\/span>divide<\/span>(<\/span>sum<\/span>,<\/span> digits<\/span>,<\/span> RoundingMode<\/span>.<\/span>HALF_EVEN<\/span>));<\/span>\r\n            }<\/span>\r\n        }<\/span>\r\n\r\n        \/** \u8a08\u7b97\u7d42\u4e86\u3057\u305f\u6642\u9593 *\/<\/span>\r\n        long<\/span> t1<\/span> =<\/span> System<\/span>.<\/span>nanoTime<\/span>();<\/span>\r\n        System<\/span>.<\/span>err<\/span>.<\/span>println<\/span>(<\/span>\"\u7e70\u308a\u8fd4\u3057\u305f\u56de\u6570: \"<\/span> +<\/span> iter<\/span>);<\/span>\r\n        double<\/span> elapsed<\/span> =<\/span> (<\/span>t1<\/span> -<\/span> t0<\/span>)<\/span> \/<\/span> ((<\/span>double<\/span>)<\/span>1000<\/span> *<\/span> 1000<\/span> *<\/span> 1000<\/span>);<\/span>\r\n        System<\/span>.<\/span>err<\/span>.<\/span>println<\/span>(<\/span>\"\u6240\u8981\u3057\u305f\u79d2\u6570: \"<\/span> +<\/span> String<\/span>.<\/span>format<\/span>(<\/span>\"%.6f\"<\/span>,<\/span> elapsed<\/span>));<\/span>\r\n\r\n        System<\/span>.<\/span>out<\/span>.<\/span>println<\/span>(<\/span>BigDecimal<\/span>.<\/span>valueOf<\/span>(<\/span>4<\/span>).<\/span>divide<\/span>(<\/span>sum<\/span>,<\/span> digits<\/span>,<\/span> RoundingMode<\/span>.<\/span>HALF_EVEN<\/span>));<\/span>\r\n    }<\/span>\r\n\r\n    static<\/span> public<\/span> void<\/span> main<\/span>(<\/span>String<\/span> arg<\/span>[])<\/span> {<\/span>\r\n        int<\/span> digits<\/span> =<\/span> Integer<\/span>.<\/span>parseInt<\/span>(<\/span>arg<\/span>[<\/span>0<\/span>]);<\/span>\r\n\r\n        new<\/span> RamaPi<\/span>().<\/span>calc<\/span>(<\/span>digits<\/span>);<\/span>\r\n    }<\/span>\r\n}<\/span>\r\n\r\n<\/code><\/pre>\n
                \u6267\u884c\u793a\u4f8b<\/h1>\n
                \u5728\u53c2\u6570\u4e2d\uff0c\u6307\u5b9a\u4f4d\u6570\u3002
                \n\u53ef\u80fd\u4f1a\u5728\u6700\u540e\u7684\u51e0\u4f4d\u4e0a\u5b58\u5728\u8bef\u5dee\uff08\u8bef\u5dee\u4e0e\u201c\u91cd\u590d\u6b21\u6570\u201d\u6210\u6bd4\u4f8b\uff09\u3002<\/p>\n
                java RamaPi 50\r\n3.14158504007123775601068566340160284951024042742654\r\n3.14159265359762201426827517920229156338712376594028\r\n3.14159265358979322988767708881201158250039662639857\r\n3.14159265358979323846265313702144396820307036308333\r\n3.14159265358979323846264338326814215966511742779251\r\n3.14159265358979323846264338327950289764449222972749\r\n3.14159265358979323846264338327950288419715329619277\r\n3.14159265358979323846264338327950288419716939939455\r\n3.14159265358979323846264338327950288419716939937511\r\n\u7e70\u308a\u8fd4\u3057\u305f\u56de\u6570: 9\r\n\u6240\u8981\u3057\u305f\u79d2\u6570: 0.003002\r\n3.14159265358979323846264338327950288419716939937511\r\n<\/code><\/pre>\n
                \u9700\u8981\u591a\u957f\u65f6\u95f4<\/h1>\n
                \u5728\u6211\u6240\u5904\u7684\u73af\u5883\u4e2d\u8fdb\u884c\u4e86\u4e00\u4e9b\u6d4b\u8bd5\u3002\u867d\u7136\u82b1\u8d39\u4e86\u76f8\u5f53\u591a\u7684\u65f6\u95f4\uff0c\u4f46\u662f\u6211\u4eec\u662f\u5c06Java\u7684\u591a\u500d\u957f\u8ba1\u7b97\u89c6\u4e3a\u5feb\u901f\u8fd8\u662f\u6162\u901f\u5462\uff1f<\/p>\n
                \n
                \u6841\u6570\u7e70\u308a\u8fd4\u3057\u305f\u56de\u6570\u6240\u8981\u3057\u305f\u79d2\u65701\u56de\u3042\u305f\u308a\u03bcs1020.001129564.5100180.003077170.910001700.049033288.41000016984.2371592495.320000339519.830755841.1400006790118.65170617474.4<\/div>\n<\/div>\n
                \u6b64\u5916\uff0c\u5728\u76f8\u540c\u7684\u73af\u5883\u4e0b\u5c1d\u8bd5\u8fd0\u884c\u300cSuper\u03c0\u300d\uff0c\u7ed3\u679c\u662f\u300c838\u4e07\u4f4d\u6570\u300d\u7528\u65f6\u300c152\u79d2\u300d\uff08\u4f4d\u6570\u76f8\u5dee200\u500d\uff09\u3002<\/p>\n
                \u5982\u679c\u8ffd\u6c42\u66f4\u5feb\u7684\u901f\u5ea6\uff0c\u4e0e\u5176\u4f7f\u7528 Java \u7684 BigInteger \/ BigDecimal \u7684\u591a\u500d\u957f\u8fd0\u7b97\uff0c\u5012\u4e0d\u5982\u660e\u663e\u5730\u4f7f\u7528 GMP\uff08GNU \u591a\u7cbe\u5ea6\u7b97\u672f\u5e93\uff09\u6216\u5176\u4ed6\u7c7b\u4f3c\u5de5\u5177\u66f4\u597d\u3002<\/p>\n
                \u5176\u4ed6<\/h1>\n
                \u8d77\u521d\uff0c\u6211\u8bd5\u56fe\u5b9e\u73b0\u4e00\u4e2a\u7b80\u5355\u7684\u9636\u4e58\u8ba1\u7b97\uff0c\u4f46\u5728\u53ea\u67092\u4e07\u4f4d\u7684\u60c5\u51b5\u4e0b\uff0c\u7adf\u7136\u9700\u8981\u8017\u8d39113\u79d2\u7684\u65f6\u95f4\u3002\uff08\u4e00\u5f00\u59cb\u53ea\u662f\u968f\u4fbf\u5c1d\u8bd5\u4f7f\u7528\u9012\u5f52\u6cd5\u7f16\u5199\uff0c\u7ed3\u679c\u5f88\u5feb\u5c31\u9047\u5230\u4e86\u6808\u6ea2\u51fa\u7684\u95ee\u9898\u3002\uff09<\/p>\n
                    \/**\r\n     * \u968e\u4e57\u3092\u8a08\u7b97\u3057\u307e\u3059\u3002\r\n     *\/<\/span>\r\n    static<\/span> final<\/span> BigInteger<\/span> facto<\/span>(<\/span>final<\/span> int<\/span> a<\/span>)<\/span> {<\/span>\r\n        BigInteger<\/span> work<\/span> =<\/span> BigInteger<\/span>.<\/span>ONE<\/span>;<\/span>\r\n\r\n        for<\/span> (<\/span>int<\/span> i<\/span>=<\/span>2<\/span> ;<\/span> i<\/span><=<\/span>a<\/span> ;<\/span> i<\/span>++)<\/span> {<\/span>\r\n            work<\/span> =<\/span> work<\/span>.<\/span>multiply<\/span>(<\/span>BigInteger<\/span>.<\/span>valueOf<\/span>(<\/span>i<\/span>));<\/span>\r\n        }<\/span>\r\n        return<\/span> work<\/span>;<\/span>\r\n    }<\/span>\r\n<\/code><\/pre>\n
                \u8bf7\u63d0\u4f9b\u66f4\u591a\u7684\u4e0a\u4e0b\u6587\u6216\u8005\u5177\u4f53\u7684\u53e5\u5b50\uff0c\u4ee5\u4fbf\u6211\u80fd\u591f\u4e3a\u60a8\u63d0\u4f9b\u66f4\u51c6\u786e\u7684\u6c49\u8bed\u7ffb\u8bd1\u3002<\/h1>\n
                  \n
                • \n
                    \u30b7\u30e5\u30ea\u30cb\u30f4\u30a1\u30fc\u30b5\u30fb\u30e9\u30de\u30cc\u30b8\u30e3\u30f3(Wikipedia)<\/ul>\n<\/li>\n<\/ul>\n
                     <\/p>\n
                      \n
                    • \n
                        \u4efb\u610f\u7cbe\u5ea6\u6f14\u7b97 \u306b\u3064\u3044\u3066\u306e\u7d39\u4ecb\u8a18\u4e8b(Wikipedia)<\/ul>\n<\/li>\n<\/ul>\n
                         <\/p>\n
                          \n
                        • \n
                            \u3088\u308a\u3061\u3083\u3093\u3068\u3057\u305f\u591a\u500d\u9577\u6f14\u7b97\u3092\u884c\u3044\u305f\u3044\u3068\u304d\u306f GMP<\/ul>\n<\/li>\n<\/ul>\n
                             <\/p>\n
                              \u8457\u540d\u306a\u5186\u5468\u7387\u8a08\u7b97\u30d7\u30ed\u30b0\u30e9\u30e0<\/ul>\n","protected":false},"excerpt":{"rendered":"
                              \u9996\u5148 \u5728\u8fd9\u7bc7\u6587\u7ae0\u4e2d\uff0c\u6211\u4eec\u5c06\u4f7f\u7528\u4ee5\u4e0b\u7684\u516c\u5f0f\uff0c\u5728Java\u4e2d\u8ba1\u7b97\u5706\u5468\u7387\u3002 \\frac{4}{\\pi}=\\sum_{n […]<\/p>\n","protected":false},"author":12,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-31612","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"\n\u4f7f\u7528Java\u8bed\u8a00\u8ba1\u7b97\u5706\u5468\u7387 - Blog - Silicon Cloud<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.silicloud.com\/zh\/blog\/\u4f7f\u7528java\u8bed\u8a00\u8ba1\u7b97\u5706\u5468\u7387\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u4f7f\u7528Java\u8bed\u8a00\u8ba1\u7b97\u5706\u5468\u7387\" \/>\n<meta property=\"og:description\" content=\"\u9996\u5148 \u5728\u8fd9\u7bc7\u6587\u7ae0\u4e2d\uff0c\u6211\u4eec\u5c06\u4f7f\u7528\u4ee5\u4e0b\u7684\u516c\u5f0f\uff0c\u5728Java\u4e2d\u8ba1\u7b97\u5706\u5468\u7387\u3002 frac{4}{pi}=sum_{n […]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/zh\/blog\/\u4f7f\u7528java\u8bed\u8a00\u8ba1\u7b97\u5706\u5468\u7387\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - 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