{"id":290,"date":"2022-07-29T00:42:26","date_gmt":"2022-07-28T16:42:26","guid":{"rendered":"https:\/\/blog.cirno.fun\/?p=290"},"modified":"2024-09-12T09:36:57","modified_gmt":"2024-09-12T01:36:57","slug":"%e5%bf%ab%e9%80%9f%e6%8e%92%e5%ba%8f%ef%bc%81%e5%bf%ab%e9%80%9f%e6%8e%92%e5%ba%8f%ef%bc%81%e5%bf%ab%e9%80%9f%e6%8e%92%e5%ba%8f%ef%bc%81","status":"publish","type":"post","link":"https:\/\/blog.sssn.tech\/?p=290","title":{"rendered":"\u5feb\u901f\u6392\u5e8f\uff01\u5feb\u901f\u6392\u5e8f\uff01\u5feb\u901f\u6392\u5e8f\uff01"},"content":{"rendered":"<p>\u5feb\u901f\u6392\u5e8f\u4e8b\u57fa\u4e8e\u5206\u6cbb\u7684\u6392\u5e8f\u7b97\u6cd5\uff0c\u5176\u590d\u6742\u5ea6\u975e\u5e38\u4f18\u79c0\uff0c\u8fbe\u5230\u4e86<code>O(NlogN)<\/code>\u7ea7\u522b\uff0c\u57fa\u672c\u601d\u60f3\u5982\u4e0b<\/p>\n<p>\u5bf9\u4e8e\u4e00\u4e2a\u65e0\u5e8f\u6570\u5217<code>a[N]<\/code>,\u6211\u4eec<strong>\u4efb\u9009<\/strong>\u5176\u4e2d\u7684\u4e00\u4e2a\u6570\u5b57<code>a[t]=x<\/code>\u4f5c\u4e3a<strong>\u57fa\u51c6\u6570<\/strong>\uff0c\u6211\u4eec\u5c06\u5c0f\u4e8e\u4ed6\u7684\u7f6e\u4e8e\u5176\u5de6\u8fb9\uff0c\u5c06\u5927\u4e8e\u4ed6\u7684\u7f6e\u4e8e\u5176\u53f3\u8fb9,\u8fd9\u6837\u6211\u4eec\u5c31\u5bf9\u6570\u5217\u5728\u533a\u95f41~N\u5b8c\u6210\u4e86\u4e00\u6b21\u64cd\u4f5c\uff0c\u901a\u8fc7\u6b64\u6b21\u64cd\u4f5c\uff0c\u6211\u4eec\u5c06\u6570<code>x<\/code><strong>\u5f52\u4f4d<\/strong>\u4e86<\/p>\n<p>\u5f52\u4f4d\u4fbf\u662f\u5bf9\u6570<code>x<\/code>\u800c\u8a00\uff0c\u4ed6\u627e\u5230\u4e86\u5176\u5728\u6709\u5e8f\u6570\u5217\u4e2d\u7684\u4f4d\u7f6e\uff0c\u63a5\u4e0b\u6765\uff0c\u6211\u4eec\u5c06\u64cd\u4f5c\u9012\u5f52\u81f3\u7531<code>x<\/code>\u5206\u6210\u7684\u5de6\u53f3\u533a\u95f4\u4e0a\uff0c\u5f52\u4f4d\u4e24\u4e2a\u5b50\u533a\u95f4\u7684\u6570\uff0c\u76f4\u5230\u533a\u95f4\u957f\u5ea6\u4e3a1<\/p>\n<p>\u7b80\u800c\u8a00\u4e4b\u4e09\u6b65\u8d70\uff1a<\/p>\n<ol>\n<li>\u9009\u5b9a\u5e8f\u5217\u57fa\u51c6\uff08\u4efb\u610f\u7686\u53ef\uff09<\/li>\n<li>\u5c06\u5c0f\u4e8e\u57fa\u51c6\u7684\u7f6e\u4e8e\u5de6\u8fb9\uff0c\u5927\u4e8e\u57fa\u51c6\u7684\u7f6e\u4e8e\u53f3\u8fb9<\/li>\n<li>\u5bf9\u7531\u57fa\u51c6\u9694\u5f00\u7684\u5de6\u53f3\u4e24\u4e2a\u5b50\u5e8f\u5217\u91cd\u590d\u4e0a\u8ff0\u64cd\u4f5c<\/li>\n<\/ol>\n<pre><code class=\"language-cpp\">void q_sort(int a[],int l,int r){\/\/l\uff0cr\u5206\u522b\u662f\u5de6\u53f3\u754c\n    if(l&gt;=r) \/\/\u5148\u5199\u51fa\u53e3\uff0c\u5199==\u4e5f\u53ef\u4ee5\n        return ;\n    int x=a[(l+r+1)\/2],i=l-1,j=r+1;\n    while(i&lt;j){\n        do i++; while(a[i]&lt;x);\/\/\u5728\u5de6\u4fa7\u627e\u5230\u4e00\u4e2a\u5927\u4e8e\u57fa\u51c6\u6570\u7684\n        do j--; while(a[j]&gt;x);\/\/\u5728\u53f3\u4fa7\u627e\u5230\u4e00\u4e2a\u5c0f\u4e8e\u57fa\u51c6\u6570\u7684\n        if(i&lt;j)\/\/\u5982\u679cij\u649e\u4e86\u5c31\u8bf4\u660e\u7ed3\u675f\n            swap(a[i],a[j]);    \/\/\u4ea4\u6362\u627e\u5230\u7684\u4e24\u4e2a\u6570\n    }\n    \/\/\u5411\u5b50\u5e8f\u5217\u9012\u5f52\n    \/\/\u8fd9\u91cc\u7684\u8fb9\u754c\u95ee\u9898\u7a0d\u590d\u6742\uff0c\u53ef\u4ee5\u6682\u4e14\u80cc\u8fc7\u7ed3\u8bba\n    q_sort(a,l,j);\n    q_sort(a,j+1,r);\n}<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"<p>\u5feb\u901f\u6392\u5e8f\u4e8b\u57fa\u4e8e\u5206\u6cbb\u7684\u6392\u5e8f\u7b97\u6cd5\uff0c\u5176\u590d\u6742\u5ea6\u975e\u5e38\u4f18\u79c0\uff0c\u8fbe\u5230\u4e86O(NlogN)\u7ea7\u522b\uff0c\u57fa\u672c [&#8230;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[13],"tags":[],"class_list":["post-290","post","type-post","status-publish","format-standard","hentry","category-13"],"_links":{"self":[{"href":"https:\/\/blog.sssn.tech\/index.php?rest_route=\/wp\/v2\/posts\/290","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.sssn.tech\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.sssn.tech\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.sssn.tech\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.sssn.tech\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=290"}],"version-history":[{"count":1,"href":"https:\/\/blog.sssn.tech\/index.php?rest_route=\/wp\/v2\/posts\/290\/revisions"}],"predecessor-version":[{"id":758,"href":"https:\/\/blog.sssn.tech\/index.php?rest_route=\/wp\/v2\/posts\/290\/revisions\/758"}],"wp:attachment":[{"href":"https:\/\/blog.sssn.tech\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=290"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.sssn.tech\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=290"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.sssn.tech\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=290"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}