{"id":35,"date":"2026-04-05T16:01:57","date_gmt":"2026-04-05T08:01:57","guid":{"rendered":"https:\/\/blog.sjll.top\/?p=35"},"modified":"2026-04-05T16:01:57","modified_gmt":"2026-04-05T08:01:57","slug":"%e6%b7%b1%e5%ba%a6%e4%bc%98%e5%85%88%e6%90%9c%e7%b4%a2dfs%e7%ae%97%e6%b3%95%e8%af%a6%e8%a7%a3%ef%bc%9ac%e5%ae%9e%e7%8e%b0%e4%b8%8e%e5%ba%94%e7%94%a8","status":"publish","type":"post","link":"https:\/\/www.sjll.top\/?p=35","title":{"rendered":"\u6df1\u5ea6\u4f18\u5148\u641c\u7d22(DFS)\u7b97\u6cd5\u8be6\u89e3\uff1aC++\u5b9e\u73b0\u4e0e\u5e94\u7528"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\">\u4ec0\u4e48\u662f\u6df1\u5ea6\u4f18\u5148\u641c\u7d22\uff1f<\/h2>\n\n\n\n<p><strong>\u6df1\u5ea6\u4f18\u5148\u641c\u7d22\uff08Depth-First Search\uff0c\u7b80\u79f0DFS\uff09<\/strong> \u662f\u4e00\u79cd\u7528\u4e8e\u904d\u5386\u6216\u641c\u7d22\u6811\u6216\u56fe\u6570\u636e\u7ed3\u6784\u7684\u7b97\u6cd5\u3002\u5176\u6838\u5fc3\u601d\u60f3\u662f<strong>\u5c3d\u53ef\u80fd\u6df1\u5730<\/strong>\u6cbf\u7740\u6811\u7684\u5206\u652f\u5411\u4e0b\u63a2\u7d22\uff0c\u76f4\u5230\u65e0\u6cd5\u7ee7\u7eed\u4e3a\u6b62\uff0c\u7136\u540e\u56de\u6eaf\u5230\u4e0a\u4e00\u8282\u70b9\uff0c\u7ee7\u7eed\u63a2\u7d22\u5176\u4ed6\u5206\u652f\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">DFS \u7684\u57fa\u672c\u601d\u60f3<\/h3>\n\n\n\n<ol class=\"wp-block-list\"><li>\u4ece\u8d77\u59cb\u8282\u70b9\u5f00\u59cb\uff0c\u6807\u8bb0\u4e3a\u5df2\u8bbf\u95ee<\/li><li>\u5c3d\u53ef\u80fd\u6df1\u5730\u5411\u4e0b\u8bbf\u95ee\u672a\u8bbf\u95ee\u7684\u90bb\u63a5\u8282\u70b9<\/li><li>\u5f53\u5230\u8fbe\u5c3d\u5934\uff08\u65e0\u672a\u8bbf\u95ee\u90bb\u63a5\u8282\u70b9\uff09\u65f6\uff0c\u56de\u6eaf\u5230\u4e0a\u4e00\u4e2a\u8282\u70b9<\/li><li>\u91cd\u590d\u4e0a\u8ff0\u8fc7\u7a0b\uff0c\u76f4\u5230\u6240\u6709\u8282\u70b9\u90fd\u88ab\u8bbf\u95ee<\/li><\/ol>\n\n\n\n<h3 class=\"wp-block-heading\">DFS \u7684\u5b9e\u73b0\u65b9\u5f0f<\/h3>\n\n\n\n<p>DFS\u4e3b\u8981\u6709\u4e24\u79cd\u5b9e\u73b0\u65b9\u5f0f\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li><strong>\u9012\u5f52\u5b9e\u73b0<\/strong>\uff1a\u5229\u7528\u7cfb\u7edf\u6808\uff0c\u4ee3\u7801\u7b80\u6d01<\/li><li><strong>\u663e\u5f0f\u6808\u5b9e\u73b0<\/strong>\uff1a\u4f7f\u7528\u624b\u52a8\u7ef4\u62a4\u7684\u6808\uff0c\u66f4\u7075\u6d3b<\/li><\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">C++ \u4ee3\u7801\u5b9e\u73b0<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code lang=\"cpp\">#include &lt;iostream&gt;\n#include &lt;vector&gt;\n#include &lt;stack&gt;\nusing namespace std;\n\n\/\/ \u90bb\u63a5\u8868\u8868\u793a\u7684\u56fe\nvector&lt;vector&lt;int&gt;&gt; adj;\nvector&lt;bool&gt; visited;\n\n\/\/ \u9012\u5f52\u5b9e\u73b0 DFS\nvoid dfs_recursive(int u) {\n    visited[u] = true;\n    cout &lt;&lt; u &lt;&lt; \" \";\n    \n    for (int v : adj[u]) {\n        if (!visited[v]) {\n            dfs_recursive(v);\n        }\n    }\n}\n\n\/\/ \u8fed\u4ee3\u5b9e\u73b0 DFS\uff08\u4f7f\u7528\u663e\u5f0f\u6808\uff09\nvoid dfs_iterative(int start) {\n    stack&lt;int&gt; st;\n    st.push(start);\n    visited[start] = true;\n    \n    while (!st.empty()) {\n        int u = st.top();\n        st.pop();\n        cout &lt;&lt; u &lt;&lt; \" \";\n        \n        for (int v : adj[u]) {\n            if (!visited[v]) {\n                visited[v] = true;\n                st.push(v);\n            }\n        }\n    }\n}\n\nint main() {\n    \/\/ \u793a\u4f8b\u56fe\uff1a5\u4e2a\u8282\u70b9\n    int n = 5;\n    adj.resize(n);\n    \n    \/\/ \u6dfb\u52a0\u8fb9 (\u65e0\u5411\u56fe)\n    adj[0].push_back(1);\n    adj[1].push_back(0);\n    adj[0].push_back(2);\n    adj[2].push_back(0);\n    adj[1].push_back(3);\n    adj[3].push_back(1);\n    adj[2].push_back(4);\n    adj[4].push_back(2);\n    \n    visited.assign(n, false);\n    cout &lt;&lt; \"\u9012\u5f52 DFS (\u4ece\u8282\u70b90\u5f00\u59cb): \";\n    dfs_recursive(0);\n    cout &lt;&lt; endl;\n    \n    visited.assign(n, false);\n    cout &lt;&lt; \"\u8fed\u4ee3 DFS (\u4ece\u8282\u70b90\u5f00\u59cb): \";\n    dfs_iterative(0);\n    cout &lt;&lt; endl;\n    \n    return 0;\n}<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">DFS \u7684\u5e94\u7528\u573a\u666f<\/h3>\n\n\n\n<ol class=\"wp-block-list\"><li><strong>\u8fde\u901a\u5206\u91cf\u68c0\u6d4b<\/strong>\uff1a\u5224\u65ad\u56fe\u662f\u5426\u8fde\u901a<\/li><li><strong>\u62d3\u6251\u6392\u5e8f<\/strong>\uff1a\u89e3\u51b3\u6709\u5411\u65e0\u73af\u56fe\u7684\u4f9d\u8d56\u95ee\u9898<\/li><li><strong>\u8def\u5f84\u67e5\u627e<\/strong>\uff1a\u5bfb\u627e\u4e24\u70b9\u4e4b\u95f4\u7684\u8def\u5f84<\/li><li><strong>\u8ff7\u5bab\u6c42\u89e3<\/strong>\uff1a\u6df1\u5ea6\u4f18\u5148\u63a2\u7d22\u53ef\u80fd\u8def\u5f84<\/li><li><strong>\u4e8c\u53c9\u6811\u904d\u5386<\/strong>\uff1a\u524d\u5e8f\u3001\u4e2d\u5e8f\u3001\u540e\u5e8f\u904d\u5386<\/li><\/ol>\n\n\n\n<h3 class=\"wp-block-heading\">\u590d\u6742\u5ea6\u5206\u6790<\/h3>\n\n\n\n<ul class=\"wp-block-list\"><li><strong>\u65f6\u95f4\u590d\u6742\u5ea6<\/strong>\uff1aO(V + E)\uff0cV\u4e3a\u8282\u70b9\u6570\uff0cE\u4e3a\u8fb9\u6570<\/li><li><strong>\u7a7a\u95f4\u590d\u6742\u5ea6<\/strong>\uff1aO(V)\uff0c\u7528\u4e8e\u5b58\u50a8\u8bbf\u95ee\u6807\u8bb0\u548c\u6808<\/li><\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">\u603b\u7ed3<\/h3>\n\n\n\n<p>\u6df1\u5ea6\u4f18\u5148\u641c\u7d22\u662f\u4e00\u79cd\u5f3a\u5927\u800c\u7075\u6d3b\u7684\u7b97\u6cd5\uff0c\u638c\u63e1\u5b83\u662f\u5b66\u4e60\u56fe\u8bba\u548c\u7b97\u6cd5\u7684\u57fa\u7840\u3002\u9012\u5f52\u5b9e\u73b0\u7b80\u6d01\u76f4\u89c2\uff0c\u8fed\u4ee3\u5b9e\u73b0\u5219\u66f4\u6613\u4e8e\u7406\u89e3\u548c\u8c03\u8bd5\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4ec0\u4e48\u662f\u6df1\u5ea6\u4f18\u5148\u641c\u7d22\uff1f \u6df1\u5ea6\u4f18\u5148\u641c\u7d22\uff08Depth-First Search\uff0c\u7b80\u79f0DFS\uff09 \u662f\u4e00\u79cd\u7528\u4e8e\u904d\u5386\u6216\u641c\u7d22\u6811 [&hellip;]<\/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":[25,26,24],"class_list":["post-35","post","type-post","status-publish","format-standard","hentry","category-3","tag-depth","tag-first-search","tag-dfsc"],"_links":{"self":[{"href":"https:\/\/www.sjll.top\/index.php?rest_route=\/wp\/v2\/posts\/35","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.sjll.top\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.sjll.top\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.sjll.top\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.sjll.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=35"}],"version-history":[{"count":1,"href":"https:\/\/www.sjll.top\/index.php?rest_route=\/wp\/v2\/posts\/35\/revisions"}],"predecessor-version":[{"id":52,"href":"https:\/\/www.sjll.top\/index.php?rest_route=\/wp\/v2\/posts\/35\/revisions\/52"}],"wp:attachment":[{"href":"https:\/\/www.sjll.top\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=35"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.sjll.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=35"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.sjll.top\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=35"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}