{"id":177,"date":"2012-06-25T08:15:47","date_gmt":"2012-06-24T23:15:47","guid":{"rendered":"http:\/\/yucchi.jp\/blog\/?p=177"},"modified":"2013-04-24T22:14:15","modified_gmt":"2013-04-24T13:14:15","slug":"%e7%b4%a0%e6%95%b0%e3%82%92%e6%b1%82%e3%82%81%e3%82%8b-vol-2","status":"publish","type":"post","link":"http:\/\/yucchi.jp\/blog\/?p=177","title":{"rendered":"\u7d20\u6570\u3092\u6c42\u3081\u308b vol.2"},"content":{"rendered":"<p><font size=\"3\">\u6628\u65e5\u3001\u7d20\u6570\u3092\u6c42\u3081\u308b\u30d7\u30ed\u30b0\u30e9\u30e0\u3092\u4f5c\u3063\u305f\u304c 3 \u5104\u307e\u3067\u306e\u7d20\u6570\u3092\u6c42\u3081\u308b\u306e\u306b\u7d04 4 \u6642\u9593\u534a\u304b\u304b\u3063\u305f\u3002<\/font><\/p>\n<p><font size=\"3\">\u3053\u308c\u304c\u901f\u3044\u306e\u304b\u9045\u3044\u306e\u304b\u306f\u7f6e\u3044\u3068\u3044\u3066\u3001\u3082\u3046\u5c11\u3057\u51e6\u7406\u6642\u9593\u306e\u77ed\u7e2e\u3092\u306f\u304b\u308a\u305f\u3044\u3002<\/font><\/p>\n<p><font size=\"3\">\u6700\u8fd1\u306e PC \u306f\u30de\u30eb\u30c1\u30b3\u30a2\u30d7\u30ed\u30bb\u30c3\u30b5\u3092\u642d\u8f09\u3057\u3066\u3044\u308b\u306e\u3067\u4e26\u5217\u51e6\u7406\u3055\u305b\u308c\u3070\u51e6\u7406\u6642\u9593\u77ed\u7e2e\u304c\u53ef\u80fd\u304b\u3082\u3057\u308c\u306a\u3044\u3002<\/font><\/p>\n<p><font size=\"3\">\u5e78\u3044\u306b\u3082\u79c1\u306e PC \u306f 8 \u30b3\u30a2\u306a\u306e\u3067\u65e9\u901f\u8a66\u3057\u3066\u307f\u307e\u3057\u305f\u3002<\/font><\/p>\n<p><font size=\"3\">\u3061\u306a\u307f\u306b\u4e0b\u8a18\u30d7\u30ed\u30b0\u30e9\u30e0\u306f\u3001java.util.concurrent \u30d1\u30c3\u30b1\u30fc\u30b8\u306b\u3064\u3044\u3066\u8abf\u3079\u3066\u3044\u305f\u6642\u306b\u3042\u308b\u30b5\u30a4\u30c8\u306b\u3042\u3063\u305f<\/font><\/p>\n<p><font size=\"3\">\u30b5\u30f3\u30d7\u30eb\u30d7\u30ed\u30b0\u30e9\u30e0\u3092\u53c2\u8003\u306b\u3055\u305b\u3066\u3044\u305f\u3060\u304d\u307e\u3057\u305f\u3002<\/font><\/p>\n<p><font size=\"3\"><\/font><\/p>\n<style type=\"text\/css\">\n<!--\ntable {color: #000000; background-color: #e9e8e2; font-family: \u3086\u305f\u307d\u3093\uff08\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\uff09}\n-->\n<\/style>\n<table width=\"100%\">\n<tbody>\n<tr>\n<td align=\"left\">jp\\yucchi\\primenumber\\PrimeNumber.java<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<pre>\r\npackage jp.yucchi.primenumber;\r\n\r\nimport java.lang.management.ManagementFactory;\r\nimport java.util.ArrayList;\r\nimport java.util.List;\r\nimport java.util.concurrent.*;\r\nimport java.util.logging.Level;\r\nimport java.util.logging.Logger;\r\n\r\npublic class PrimeNumber implements Callable<List<Long>> {\r\n\r\n    private static final long TARGET_NUMBER = 300_000_000L; \/\/ 8 \u306e\u500d\u6570\u3092\u6307\u5b9a\u3059\u308b\u3053\u3068(\uff1b\u00b4\u0414\uff40)\r\n    private final long from;\r\n    private final long to;\r\n\r\n    public PrimeNumber(final long from, final long to) {\r\n        this.from = from;\r\n        this.to = to;\r\n    }\r\n\r\n    public static void main(String[] args) {\r\n        long startTime = System.nanoTime();\r\n        long primeCounter = 0L;\r\n        final int procs = ManagementFactory.getOperatingSystemMXBean().getAvailableProcessors();\r\n        ExecutorService executor = Executors.newFixedThreadPool(procs);\r\n        final long range = TARGET_NUMBER \/ procs;\r\n        List<Future<List<Long>>> futures = new ArrayList<>();\r\n        for (int i = 0; i < procs; i++) {\r\n            final long from = i * range + 1;\r\n            final long to = (i + 1) * range;\r\n            futures.add(executor.submit(new PrimeNumber(from, to)));\r\n        }\r\n        executor.shutdown();\r\n        List<Long> totalPrimes = new ArrayList<>();\r\n        for (Future<List<Long>> future : futures) {\r\n            try {\r\n                List<Long> primes = future.get();\r\n                totalPrimes.addAll(primes);\r\n            } catch (InterruptedException | ExecutionException ex) {\r\n                Logger.getLogger(PrimeNumber.class.getName()).log(Level.SEVERE, null, ex);\r\n            }\r\n        }\r\n        for (Long prime : totalPrimes) {\r\n            primeCounter++;\r\n            System.out.println(prime + \" is Prime Number.\" + \" ---> \" + primeCounter);\r\n        }\r\n        System.out.println(primeCounter + \"\u500b\u306e\u7d20\u6570\u3092\u691c\u51fa\u3057\u307e\u3057\u305f\u3002\");\r\n        long time = System.nanoTime() - startTime;\r\n        System.out.println((int) (time * 1e-9) \/ 3_600 + \"\u6642\u9593\"\r\n                + (int) ((time * 1e-9) \/ 60) % 60 + \"\u5206\"\r\n                + (int) (time * 1e-9 % 60) + \"\u79d2\"\r\n                + Double.toString((time * 1e-9 % 60) % 1).substring(2));\r\n    }\r\n\r\n    @Override\r\n    public List<Long> call() throws Exception {\r\n        List<Long> primes = new ArrayList<>();\r\n        for (long i = from; i < to + 1L; i++) {\r\n            \/\/ 2 \u3088\u308a\u5927\u304d\u306a\u5076\u6570\u306f\u51e6\u7406\u3092\u30b9\u30ad\u30c3\u30d7\r\n            if ((i &#038; 0b1) == 0 &#038;&#038; i > 0b10L) {\r\n                continue;\r\n            }\r\n            long j;\r\n            for (j = (long) Math.sqrt(i); i % j != 0; j--) {\r\n                \/\/ i \u3092\u5272\u308a\u5207\u308b j \u3092\u898b\u3064\u3051\u51fa\u3059\u51e6\u7406\r\n            }\r\n            \/\/ i \u3092\u5272\u308a\u5207\u308c\u305a j \u304c 1 \u306e\u5834\u5408\u7d20\u6570\u3068\u5224\u5b9a\u3001\u305f\u3060\u3057 i \u304c 1 \u306e\u5834\u5408\u306f\u9664\u304f        \r\n            if (j == 1L && i != 1L) {\r\n                primes.add(i);\r\n            }\r\n        }\r\n        return primes;\r\n    }\r\n}\r\n<\/pre>\n<p><font size=\"3\">\u3053\u306e\u30d7\u30ed\u30b0\u30e9\u30e0\u306e\u5b9f\u884c\u7d50\u679c\u306f\u6b21\u306e\u3088\u3046\u306b\u306a\u3063\u305f\u3002<\/font><\/p>\n<p><font size=\"3\"><\/font>&nbsp;<\/p>\n<p><font size=\"3\">2 is Prime Number. &#8212;&gt; 1<br \/>3 is Prime Number. &#8212;&gt; 2<br \/>5 is Prime Number. &#8212;&gt; 3<br \/>7 is Prime Number. &#8212;&gt; 4<br \/>11 is Prime Number. &#8212;&gt; 5<br \/>13 is Prime Number. &#8212;&gt; 6<br \/>17 is Prime Number. &#8212;&gt; 7<br \/>19 is Prime Number. &#8212;&gt; 8<br \/>23 is Prime Number. &#8212;&gt; 9<br \/>29 is Prime Number. &#8212;&gt; 10<\/font><\/p>\n<p><font size=\"3\">\u3000\u3000\u3000\u3000\u7565<\/font><\/p>\n<p><font size=\"3\">299999801 is Prime Number. &#8212;&gt; 16252317<br \/>299999807 is Prime Number. &#8212;&gt; 16252318<br \/>299999813 is Prime Number. &#8212;&gt; 16252319<br \/>299999827 is Prime Number. &#8212;&gt; 16252320<br \/>299999897 is Prime Number. &#8212;&gt; 16252321<br \/>299999923 is Prime Number. &#8212;&gt; 16252322<br \/>299999939 is Prime Number. &#8212;&gt; 16252323<br \/>299999957 is Prime Number. &#8212;&gt; 16252324<br \/>299999977 is Prime Number. &#8212;&gt; 16252325<br \/>16252325\u500b\u306e\u7d20\u6570\u3092\u691c\u51fa\u3057\u307e\u3057\u305f\u3002<br \/>1\u6642\u959326\u520623\u79d242106727300051716<\/font><\/p>\n<p><font size=\"3\"><\/font>&nbsp;<\/p>\n<p><font color=\"#ff0000\" size=\"5\"><strong>\u306a\u3093\u3068 3 \u6642\u9593\u3082\u51e6\u7406\u6642\u9593\u304c\u77ed\u7e2e\u3067\u304d\u307e\u3057\u305f\u3002(^_^)v<\/strong><\/font><\/p>\n<p><font size=\"3\">\u305d\u308c\u3067\u3082 1 \u6642\u9593\u534a\u8fd1\u304f\u304b\u304b\u308a\u307e\u3059\u3002<\/font><\/p>\n<p><font size=\"3\">\u3053\u3093\u306a\u3082\u306e\u306a\u306e\u304b\u306a\u3041\u30fb\u30fb\u30fb\uff1f<\/font><\/p>\n<p><font size=\"3\">\u7d20\u6570\u3092\u6c42\u3081\u308b\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u306b<font color=\"#9b00d3\" size=\"4\"><strong>\u30a8\u30e9\u30c8\u30b9\u30c6\u30cd\u30b9\u306e\u7be9<\/strong><\/font>\u3063\u3066\u306e\u304c\u3042\u308a\u307e\u3059\u3002<\/font><\/p>\n<p><font size=\"3\">\u305d\u308c\u3082\u8a66\u3057\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/font><\/p>\n<p><font size=\"3\">\u305d\u308c\u3067\u306f<\/font><\/p>\n<p><font size=\"3\">\u304a\u3063\u3068\u305d\u308d\u305d\u308d\u6642\u9593\u304c\u30fb\u30fb\u30fb<\/font><\/p>\n<p><font size=\"3\"><strike>\u7d9a\u304d\u306f Web \u3067\uff01<\/strike><\/font><\/p>\n<p><font size=\"3\">\u3064\u3065\u304d\u306f\u307e\u305f\u4eca\u5ea6\u306d\u266a<\/font><\/p>\n<div style=\"padding-bottom: 0px; margin: 0px; padding-left: 0px; padding-right: 0px; display: inline; float: none; padding-top: 0px\" id=\"scid:0767317B-992E-4b12-91E0-4F059A8CECA8:d32ee1f3-f2a4-4501-a010-4e0ca3f70d45\" class=\"wlWriterEditableSmartContent\">Hatena \u30bf\u30b0: <a href=\"http:\/\/b.hatena.ne.jp\/t\/Java\" rel=\"tag\">Java<\/a><\/div>\n<p><font size=\"3\"><\/font>&nbsp;<\/p>\n<p><font size=\"3\"><\/font>&nbsp;<\/p>\n<p><font size=\"3\"><\/font><\/p>\n<div class='wp_social_bookmarking_light'>\n            <div 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class='wp_social_bookmarking_light_clear' \/>\n","protected":false},"excerpt":{"rendered":"<p>\u6628\u65e5\u3001\u7d20\u6570\u3092\u6c42\u3081\u308b\u30d7\u30ed\u30b0\u30e9\u30e0\u3092\u4f5c\u3063\u305f\u304c 3 \u5104\u307e\u3067\u306e\u7d20\u6570\u3092\u6c42\u3081\u308b\u306e\u306b\u7d04 4 \u6642\u9593\u534a\u304b\u304b\u3063\u305f\u3002 \u3053\u308c\u304c\u901f\u3044\u306e\u304b\u9045\u3044\u306e\u304b\u306f\u7f6e\u3044\u3068\u3044\u3066\u3001\u3082\u3046\u5c11\u3057\u51e6\u7406\u6642\u9593\u306e\u77ed\u7e2e\u3092\u306f\u304b\u308a\u305f\u3044\u3002 \u6700\u8fd1\u306e PC \u306f\u30de\u30eb\u30c1\u30b3\u30a2\u30d7\u30ed\u30bb\u30c3\u30b5\u3092\u642d\u8f09\u3057\u3066\u3044\u308b\u306e\u3067\u4e26\u5217\u51e6\u7406\u3055\u305b\u308c\u3070\u51e6\u7406\u6642\u9593\u77ed\u7e2e\u304c\u53ef\u80fd\u304b\u3082\u3057\u308c\u306a\u3044\u3002 \u5e78\u3044\u306b\u3082\u79c1\u306e PC \u306f 8 \u30b3\u30a2\u306a\u306e\u3067\u65e9\u901f\u8a66\u3057\u3066\u307f\u307e\u3057\u305f\u3002 \u3061\u306a\u307f\u306b\u4e0b\u8a18\u30d7\u30ed\u30b0\u30e9\u30e0\u306f\u3001java.util.concurrent \u30d1\u30c3\u30b1\u30fc\u30b8\u306b\u3064\u3044\u3066\u8abf\u3079\u3066\u3044\u305f\u6642\u306b\u3042\u308b\u30b5\u30a4\u30c8\u306b\u3042\u3063\u305f \u30b5\u30f3\u30d7\u30eb\u30d7\u30ed\u30b0\u30e9\u30e0\u3092\u53c2\u8003\u306b\u3055\u305b\u3066\u3044\u305f\u3060\u304d\u307e\u3057\u305f\u3002 jp\\yucchi\\primenumber\\PrimeNumber.java package jp\u2026<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[17],"class_list":["post-177","post","type-post","status-publish","format-standard","hentry","category-java","tag-java"],"_links":{"self":[{"href":"http:\/\/yucchi.jp\/blog\/index.php?rest_route=\/wp\/v2\/posts\/177","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/yucchi.jp\/blog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/yucchi.jp\/blog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/yucchi.jp\/blog\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/yucchi.jp\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=177"}],"version-history":[{"count":3,"href":"http:\/\/yucchi.jp\/blog\/index.php?rest_route=\/wp\/v2\/posts\/177\/revisions"}],"predecessor-version":[{"id":832,"href":"http:\/\/yucchi.jp\/blog\/index.php?rest_route=\/wp\/v2\/posts\/177\/revisions\/832"}],"wp:attachment":[{"href":"http:\/\/yucchi.jp\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=177"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/yucchi.jp\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=177"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/yucchi.jp\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=177"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}