{"id":352871,"date":"2021-02-21T15:46:57","date_gmt":"2021-02-21T07:46:57","guid":{"rendered":"http:\/\/4563.org\/?p=352871"},"modified":"2021-02-21T15:46:57","modified_gmt":"2021-02-21T07:46:57","slug":"%e8%87%aa%e5%b7%b1%e4%b8%8a%e7%8f%ad%e6%9c%9f%e9%97%b4%e7%ad%94%e7%9a%84%e6%9c%ba%e8%af%95%e9%a2%98%ef%bc%8c%e5%86%99%e7%9a%84%e4%b8%8d%e6%98%af%e5%be%88%e5%a5%bd%ef%bc%8c%e5%85%ac%e5%8f%b8%e5%9c%a8","status":"publish","type":"post","link":"http:\/\/4563.org\/?p=352871","title":{"rendered":"\u81ea\u5df1\u4e0a\u73ed\u671f\u95f4\u7b54\u7684\u673a\u8bd5\u9898\uff0c\u5199\u7684\u4e0d\u662f\u5f88\u597d\uff0c\u516c\u53f8\u5728\u4e0a\u6d77\u3002\u5982\u56fe"},"content":{"rendered":"
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\u81ea\u5df1\u4e0a\u73ed\u671f\u95f4\u7b54\u7684\u673a\u8bd5\u9898\uff0c\u5199\u7684\u4e0d\u662f\u5f88\u597d\uff0c\u516c\u53f8\u5728\u4e0a\u6d77\u3002\u5982\u56fe <\/h1>\n

<\/p>\n

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\u8cc7\u6df1\u5927\u4f6c : KomiSans <\/span> <\/i> 2<\/span> <\/div>\n
<\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n
<\/p>\n

\"\u81ea\u5df1\u4e0a\u73ed\u671f\u95f4\u7b54\u7684\u673a\u8bd5\u9898\uff0c\u5199\u7684\u4e0d\u662f\u5f88\u597d\uff0c\u516c\u53f8\u5728\u4e0a\u6d77\u3002\u5982\u56fe\" \"\u81ea\u5df1\u4e0a\u73ed\u671f\u95f4\u7b54\u7684\u673a\u8bd5\u9898\uff0c\u5199\u7684\u4e0d\u662f\u5f88\u597d\uff0c\u516c\u53f8\u5728\u4e0a\u6d77\u3002\u5982\u56fe\" \"\u81ea\u5df1\u4e0a\u73ed\u671f\u95f4\u7b54\u7684\u673a\u8bd5\u9898\uff0c\u5199\u7684\u4e0d\u662f\u5f88\u597d\uff0c\u516c\u53f8\u5728\u4e0a\u6d77\u3002\u5982\u56fe\" \"\u81ea\u5df1\u4e0a\u73ed\u671f\u95f4\u7b54\u7684\u673a\u8bd5\u9898\uff0c\u5199\u7684\u4e0d\u662f\u5f88\u597d\uff0c\u516c\u53f8\u5728\u4e0a\u6d77\u3002\u5982\u56fe\" \"\u81ea\u5df1\u4e0a\u73ed\u671f\u95f4\u7b54\u7684\u673a\u8bd5\u9898\uff0c\u5199\u7684\u4e0d\u662f\u5f88\u597d\uff0c\u516c\u53f8\u5728\u4e0a\u6d77\u3002\u5982\u56fe\" \"\u81ea\u5df1\u4e0a\u73ed\u671f\u95f4\u7b54\u7684\u673a\u8bd5\u9898\uff0c\u5199\u7684\u4e0d\u662f\u5f88\u597d\uff0c\u516c\u53f8\u5728\u4e0a\u6d77\u3002\u5982\u56fe\" \u540e\u9762\u4e24\u5f20\u662f\u6211\u81ea\u5df1\u7b54\u7684\uff0c\u5728\u6700\u540e txt \u53d1\u7ed9\u4ed6\u544a\u8bc9\u4ed6\u7b54\u5b8c\u4e86\u4e4b\u540e\u5c31\u6ca1\u518d\u7406\u6211\uff0c\u53ef\u80fd\u662f\u5df2\u7ecf\u6ee1\u4e86\uff0c\u4e5f\u53ef\u80fd\u662f\u6211\u7b54\u7684\u592a\u70c2\u4e86<\/p>\n<\/p><\/div>\n

\u5927\u4f6c\u6709\u8a71\u8aaa<\/b> (8<\/span>) <\/div>\n
<\/div>\n<\/p><\/div>\n<\/p><\/div>\n
    \n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : jworg <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u5982\u679c\u662f\u6211\u7684\u8bdd\uff0c\u8fd9\u4e2a\u83f1\u5f62\u662f\u6709\u89c4\u5f8b\u7684\uff0c\u4e24\u4e2a\u7b49\u5dee\u6570\u5217\u51cf\u53bb\u4e00\u4e2a\u6700\u540e\u4e00\u9879\uff0c\u7136\u540e\u4e2a\u6570\u5c31\u662f n^2+n+1<(n+1)^2\uff0c\u7136\u540e\u5bf9\u4e8e 14 \u5c31\u662f\uff0c14 \u5f00\u65b9\u8fd1\u4f3c 3\uff0c\u6700\u957f\u4e00\u884c\u5728 3\uff0c\u4e2a\u6570\u662f 2*3 -1 =5\uff0c\u603b\u4e2a\u6570\u662f 13\uff0c\u5269\u4f59 1\uff0c\u83f1\u5f62\u7684\u4e2d\u5fc3\u70b9\u662f \uff08 3\uff0c3 \uff09\uff0c\u7136\u540e\u6253\u5370 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : KomiSans <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @jworg \u6211\u8fd9\u4e2a\u4e3b\u8981\u662f\u4ece\u6700\u5c0f\u7684\u90a3\u4e2a\u4e2d\u95f4\u7684\u70b9\u6570\u5f00\u59cb\u7b97\uff0c\u4e00\u70b9\u70b9\u6269\u5c55\u6210\u83f1\u5f62\uff0c\u628a\u6570\u91cf\u79bb\u7740\u7ed9\u5b9a\u6570\u503c\u6700\u8fd1\u7684\u90a3\u4e2a\u83b7\u53d6\u5c31\u597d\uff0c\u6240\u4ee5\u70b9\u6570\u662f\u9012\u589e 2 \u7684 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : Sunyanzi <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u7b2c\u4e00\u9898\u8fd8\u633a\u6709\u8da3\u7684 … \u4f46\u6211\u6ca1\u770b\u61c2\u4f60\u7684\u5199\u6cd5 … \u6211\u5403\u9971\u4e86\u4e5f\u6ca1\u4e8b\u81ea\u5df1\u5199\u4e86\u4e00\u7248\u5982\u4e0b …<\/p>\n

    i.imgur.com\/nYGhFDJ.png<\/p>\n

    \u6253\u83f1\u5f62\u7684\u8fc7\u7a0b\u968f\u4fbf\u5199\u7684 … \u76f4\u89c9\u89c9\u5f97\u8fd8\u6709\u4f18\u5316\u7a7a\u95f4 … \u4f46\u4e0d\u5728\u6838\u5fc3\u7b97\u6cd5\u91cc\u6211\u5c31\u61d2\u5f97\u505a\u4e86 …<\/p>\n

    \u4ee5\u53ca\u6700\u540e\u7b97\u603b\u91cf\u7684\u90a3\u4e2a u \u5176\u5b9e\u4e5f\u53ef\u4ee5\u5957\u516c\u5f0f\u6c42 … \u4f46\u6211\u60f3\u6765\u60f3\u53bb\u611f\u89c9\u8fd8\u662f\u76f4\u63a5\u7d2f\u52a0\u6bd4\u8f83\u5bb9\u6613\u5c31\u7d2f\u52a0\u4e86 …<\/p>\n

    \u4f9b\u53c2\u8003 … <\/p><\/div>\n<\/p><\/div>\n<\/li>\n

  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : young1lin <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u7b2c\u4e00\u4e2a\u597d\u50cf\u662f\u6211\u8bb0\u5f97\u4e0a\u5b66\u7684\u65f6\u5019\u5b66 C \u7684\u65f6\u5019\u7684\u4f5c\u4e1a\u7684\u53d8\u5f62\u7248\u3002 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
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    \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : KomiSans <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @Sunyanzi \u795e\u4eba\u554a\uff0c\u8bf4\u8001\u5b9e\u8bdd\u6211\u4e5f\u4e0d\u5927\u80fd\u770b\u61c2\u4f60\u7684\u5199\u6cd5\uff0c\u4ece f \u53d8\u91cf\u5c31\u6ca1\u592a\u770b\u660e\u767d\uff0c\u4f46\u662f\u4f60\u5199\u7684\u4ee3\u7801\u6bd4\u6211\u7b80\u5316\u4e86\u4e0d\u5c11 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : lecher <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u4e0d\u8003\u8651\u89e3\u6cd5\uff0c\u8fd9\u4e09\u9053\u9898\u8003\u5bdf\u7684\u662f\u5e94\u5c4a\u751f\u6c34\u5e73\u3002
    \u521d\u7b5b\u7684\u6807\u51c6\u53ef\u4ee5\u731c\u6d4b\u662f\uff1a
    1. \u5177\u5907\u57fa\u672c\u7684 java \u8bed\u6cd5\u57fa\u7840
    2. \u5177\u5907\u57fa\u672c\u7684 sql \u67e5\u8be2\u548c\u8054\u8868\u57fa\u7840<\/p>\n

    \u53ef\u4ee5\u8bf4\u662f\u5f88\u7b80\u5355\u7684\u9898\u76ee\u4e86\uff0c\u8003\u5bdf\u5230\u7684\u77e5\u8bc6\u70b9\u6709\u8fd9\u51e0\u4e2a
    1. java \u7684\u5faa\u73af\uff0c\u53cc\u91cd\u5faa\u73af\uff0c\u77e5\u9053\u627e\u89c4\u5f8b\uff0c\u661f\u53f7\u548c\u7a7a\u683c\u7684\u7b49\u5dee\u6570\u5217\u89c4\u5219\uff0c\u77e5\u9053\u4ece\u5faa\u73af\u5265\u79bb\u8ba1\u7b97\u89c4\u5219\u548c\u6253\u5370\u7684\u5904\u7406\u5c01\u88c5\u4f30\u8ba1\u4f1a\u52a0\u5206\u3002
    2. \u77e5\u9053\u67e5\u8be2\u7684\u5199\u6cd5\uff0c\u77e5\u9053 order by\uff0c\u77e5\u9053 limit\uff0c\u77e5\u9053\u5b50\u67e5\u8be2\uff0c\u77e5\u9053\u5982\u4f55\u4f18\u5316\u5b50\u67e5\u8be2\u4f1a\u52a0\u5206
    3. \u77e5\u9053\u8054\u8868\u7684\u5199\u6cd5\uff0c\u77e5\u9053 group by\uff0c\u77e5\u9053\u5b50\u67e5\u8be2\uff0c\u77e5\u9053\u5982\u4f55\u4f18\u5316\u8054\u8868\u4f1a\u52a0\u5206<\/p>\n

    \u5927\u81f4\u5c31\u8fd9\u4e9b\uff0c\u8fd9\u7b97\u662f\u5f88\u52a1\u5b9e\u7684\u7b14\u8bd5\u9898\u4e86\uff0c\u8003\u5bdf\u7684\u90fd\u662f\u57fa\u672c\u77e5\u8bc6\u70b9\u3002 <\/p><\/div>\n<\/p><\/div>\n<\/li>\n

  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : Sunyanzi <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @KomiSans f \u6c42\u7684\u662f\u521d\u59cb\u72b6\u6001\u5de6\u4e0a\u89d2\u7a7a\u683c\u7684\u6570\u91cf … \u5373\u4ece\u6700\u9876\u7aef\u5230\u6700\u957f\u4e00\u884c\u7684\u8ddd\u79bb …<\/p>\n

    \u4ece\u4e0b\u9762\u7684\u4ee3\u7801\u4e5f\u53ef\u4ee5\u770b\u5230 … \u5b9e\u9645\u6253\u5370\u7684\u7a7a\u683c\u6570\u91cf\u5728\u53d8\u91cf c \u91cc … \u968f\u5faa\u73af\u9010\u7ea7\u9012\u51cf\u518d\u9012\u589e …<\/p>\n

    f \u7684\u53e6\u4e00\u79cd\u7b49\u6548\u7684\u5199\u6cd5\u662f int f = 0 – (int)( 2 – Math.sqrt( 4 + 8 * ( n – 1 ) ) ) \/ 4 … <\/p>\n

    \u4e2a\u4eba\u611f\u89c9\u6ca1\u6709\u6211\u73b0\u5728\u7684\u7248\u672c\u597d\u770b … \u5c31\u6ca1\u9009\u8fd9\u4e2a\u5199\u6cd5 …<\/p>\n

    \u4ee5\u53ca\u795e\u4eba\u4e0d\u6562\u5f53 … \u4e5d\u5e74\u4e49\u52a1\u6559\u80b2\u5b66\u4ee5\u81f4\u7528\u800c\u5df2 … <\/p><\/div>\n<\/p><\/div>\n<\/li>\n

  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : copper20 <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u7b2c\u4e00\u9898\u4e3b\u8981\u8fd8\u662f\u627e\u89c4\u5f8b\u5427\uff0c\u6211\u5403\u9971\u4e86\u6ca1\u4e8b\u4e5f\u7a0d\u5fae\u8bb2\u4e00\u4e0b\u6211\u7684\u60f3\u6cd5\u5427\uff0c\u601d\u8def\u548c @Sunyanzi \u662f\u4e00\u6837\u7684\u5e94\u8be5\u3002<\/p>\n

    \u7b97\u6cd5\u7684\u6838\u5fc3\u8fd8\u662f\u5728\u627e\u5230\u9700\u8981\u6253\u5370\u7684\u83f1\u5f62\u3002<\/p>\n

    \u6709 i + 1 \u884c\u7684\u83f1\u5f62\u6240\u9700\u8981\u7684 \u2018*\u2019 \u7684\u6570\u91cf\u662f\uff1a\u5f53\u4e2d\u54ea\u90a3\u4e00\u884c \u2018*\u2019 \u7684\u6570\u91cf + 2 * \u7b2c\u4e00\u884c\u5230\u5f53\u4e2d\u90a3\u4e00\u884c \u2018*\u2019 \u6570\u91cf\u7684\u548c\uff0c\u4e5f\u5c31\u662f (2i+1) + (1 + 3 + … + 2i – 1)\uff0c\u5316\u7b80\u4e00\u4e0b\u5c31\u662f 2i^2 + 2i + 1 \u3002<\/p>\n

    \u6240\u4ee5\u95ee\u9898\u5c31\u53d8\u6210\u4e86\u6c42\u4f7f 2i^2 + 2i + 1 <= N (i >= 0) \u6210\u7acb\u7684\u6240\u6709 i \u4e2d\u6700\u5927\u7684\u90a3\u4e00\u4e2a\u6574\u6570\u3002\u7528\u9ad8\u4e2d\u77e5\u8bc6\u5c31\u80fd\u77e5\u9053 f(i) = 2i^2 + 2i + 1 – N \u5728 i >= 0, N >= 0 \u7684\u65f6\u5019\u662f\u5355\u8c03\u589e\u4e14\u5fc5\u6709\u4e00\u4e2a\u975e\u8d1f\u89e3\u7684\uff0c\u6240\u4ee5 f(i) = 0 \u7684\u90a3\u4e2a\u975e\u8d1f\u89e3\u7684\u4e0b\u53d6\u6574\u5c31\u662f\u6240\u6c42\u7684\u89e3\uff0c\u4e5f\u5c31\u662f\u6211\u4eec\u8981\u627e\u7684\u83f1\u5f62\u7684\u884c\u6570\u3002<\/p>\n

    \u63a5\u4e0b\u6765\u5c31\u662f\u5927\u4e00 C \u8bed\u8a00\u8bfe\u4e0a\u7684\u6253\u5370\u83f1\u5f62\u4e86\u3002 <\/p><\/div>\n<\/p><\/div>\n<\/li>\n

  • \n","protected":false},"excerpt":{"rendered":"

    \u81ea\u5df1\u4e0a\u73ed\u671f\u95f4\u7b54\u7684\u673a\u8bd5\u9898\uff0c\u5199\u7684\u4e0d\u662f\u5f88…<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[],"tags":[],"_links":{"self":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/352871"}],"collection":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=352871"}],"version-history":[{"count":0,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/352871\/revisions"}],"wp:attachment":[{"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=352871"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=352871"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=352871"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}