{"id":418800,"date":"2021-03-16T07:11:28","date_gmt":"2021-03-15T23:11:28","guid":{"rendered":"http:\/\/4563.org\/?p=418800"},"modified":"2021-03-16T07:11:28","modified_gmt":"2021-03-15T23:11:28","slug":"%e8%af%b7%e6%95%99%e4%b8%80%e4%b8%aa%e7%ae%80%e5%8d%95%e7%9a%84%e7%ae%97%e6%b3%95%e9%97%ae%e9%a2%98","status":"publish","type":"post","link":"http:\/\/4563.org\/?p=418800","title":{"rendered":"\u8bf7\u6559\u4e00\u4e2a\u7b80\u5355\u7684\u7b97\u6cd5\u95ee\u9898"},"content":{"rendered":"
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\u8bf7\u6559\u4e00\u4e2a\u7b80\u5355\u7684\u7b97\u6cd5\u95ee\u9898 <\/h1>\n

<\/p>\n

\n
\u8cc7\u6df1\u5927\u4f6c : levelworm <\/span> <\/i> 0<\/span> <\/div>\n
<\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n
<\/p>\n

\u524d\u60c5\u63d0\u8981\uff1a\u5feb\u56db\u5341\u591a\u4e86\u5fc3\u8840\u6765\u6f6e\u56de\u5b66\u6821\u4fee\u8ba1\u7b97\u673a\u3002\u3002\u3002\u8bf4\u8fd9\u4e2a\u76ee\u7684\u662f\u8bc1\u660e\u6211\u73b0\u5728\u667a\u5546\u4e0d\u8db3\u4e86\u3002<\/em><\/p>\n

\u9898\u76ee\u5982\u4e0b\uff1a<\/p>\n

**Rank with lg N two-way compares. **<\/p>\n

Implement rank()<\/code> so that it uses ~ 1 lg N two-way compares (instead of ~ 1 lg N 3-way compares).<\/p>\n

\u6211\u8fd9\u91cc\u6ca1\u660e\u767d\u7684\u662f\uff0c\u600e\u4e48\u53ef\u80fd\u505a\u5f97\u5230 lgN \u6b21\u5bf9\u6bd4\uff1f\u4ed6\u8fd9\u4e2a lgN \u5c31\u662f 2 \u4e3a\u5e95\u7684\u5bf9\u6570\u3002\u6bd4\u5982\u8bf4\u4e00\u4e2a\u6570\u7ec4 1, 3, 2, 4<\/code>\uff0c\u4e24\u6b21\u5bf9\u6bd4\u600e\u4e48\u4e5f\u4e0d\u591f\u7b97 rank \u7684\u5427\uff1f\u6211\u662f\u54ea\u91cc\u5ffd\u7565\u4e86\u4e48\uff1f<\/p>\n<\/p><\/div>\n

\u5927\u4f6c\u6709\u8a71\u8aaa<\/b> (5<\/span>) <\/div>\n
<\/div>\n<\/p><\/div>\n<\/p><\/div>\n
    \n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : zhongrs232 <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u53ea\u6709\u6392\u5e8f\u597d\u624d\u6709\u53ef\u80fd lgN \u5427\uff0c\u4e0d\u6392\u5e8f\u7684\u8bdd\u7edd\u5bf9\u4e0d\u53ef\u80fd lgN \u6c42 rank()\uff0c \u662f\u4e0d\u662f\u9898\u76ee\u5c11\u6761\u4ef6\u4e86 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : lidlesseye11 <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u5b8c\u86cb\uff0c\u8fde\u9898\u76ee\u90fd\u770b\u4e0d\u61c2\u4e86\u3002\u3002 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : GuuJiang <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u4e0d\u6e05\u695a\u9898\u76ee\u91cc\u8bf4\u7684 rank \u662f\u54ea\u4e00\u79cd\u5b9a\u4e49\uff0c\u5047\u5982\u8868\u793a\u7684\u662f\u5728\u6709\u5e8f\u5e8f\u5217\u4e2d\u7684\u7d22\u5f15\uff0c\u90a3\u4e48\u7ed3\u8bba\u662f\u4e0d\u53ef\u80fd\u7684 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : GuuJiang <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @GuuJiang \u4e0d\u5c0f\u5fc3\u53d1\u51fa\u6765\u4e86\uff0c\u63a5\u4e0a\u6587
    \u7528\u53cd\u8bc1\u6cd5\uff0c\u5047\u8bbe\u771f\u7684\u5b58\u5728 O(lgN)\u7684\u57fa\u4e8e\u6bd4\u8f83\u7684\u8ba1\u7b97 rank \u7684\u7b97\u6cd5\uff0c\u90a3\u4e48\u53ea\u9700\u8981\u8fd0\u884c\u4e00\u904d\u8fd9\u4e2a\u7b97\u6cd5\uff0c\u540c\u65f6\u6309\u7167\u8ba1\u7b97\u5f97\u5230\u7684 rank \u628a\u5143\u7d20\u653e\u5230\u76ee\u6807\u6570\u7ec4\u7684\u76f8\u5e94\u4f4d\u7f6e\uff0c\u4e8e\u662f\u4f60\u5c31\u5f97\u5230\u4e86\u4e00\u4e2a\u57fa\u4e8e\u6bd4\u8f83\u7684 O(lgN)\u7684\u6392\u5e8f\u7b97\u6cd5\uff0c\u7136\u800c\u4f17\u6240\u5468\u77e5\uff0c\u57fa\u4e8e\u6bd4\u8f83\u7684\u6392\u5e8f\u7b97\u6cd5\u590d\u6742\u5ea6\u4e0b\u754c\u4e3a O(NlgN) <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : ipwx <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @GuuJiang \u4f60\u8fd9\u4e0d\u6210\u7acb\u554a\u3002 \u4f60\u770b\uff0c\u5982\u679c\u6211\u8981\u6c42\u89e3\u7684\u662f\u67d0\u4e2a\u6570\u5728\u8fd9\u5217\u6570\u4e2d\u7684 rank \u5462\uff1f N \u4e2a\u6570\u6c42\u51fa rank\uff0c \u6bcf\u4e2a\u6570 log N\uff0c\u5408\u8d77\u6765\u5c31\u662f N log N \u4e0d\u662f\uff1f <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n","protected":false},"excerpt":{"rendered":"

    \u8bf7\u6559\u4e00\u4e2a\u7b80\u5355\u7684\u7b97\u6cd5\u95ee\u9898 \u8cc7\u6df1\u5927\u4f6c …<\/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\/418800"}],"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=418800"}],"version-history":[{"count":0,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/418800\/revisions"}],"wp:attachment":[{"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=418800"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=418800"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=418800"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}