{"id":23597,"date":"2025-04-19T08:07:14","date_gmt":"2025-04-19T00:07:14","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/23597.html"},"modified":"2025-04-19T08:07:14","modified_gmt":"2025-04-19T00:07:14","slug":"%e5%8d%8e%e4%b8%baod%e6%9c%ba%e8%af%95%e7%9c%9f%e9%a2%98-%e6%9c%8d%e5%8a%a1%e5%99%a8%e5%b9%bf%e6%92%ad","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/23597.html","title":{"rendered":"\u534e\u4e3aOD\u673a\u8bd5\u771f\u9898---\u670d\u52a1\u5668\u5e7f\u64ad"},"content":{"rendered":"

\u534e\u4e3aOD\u673a\u8bd5\u4e2d\u7684\u201c\u670d\u52a1\u5668\u5e7f\u64ad\u201d\u9898\u76ee\u662f\u4e00\u4e2a\u7ecf\u5178\u7684\u7b97\u6cd5\u95ee\u9898，\u901a\u5e38\u6d89\u53ca\u56fe\u8bba\u548c\u8fde\u901a\u5206\u91cf\u7684\u6982\u5ff5\u3002\u4ee5\u4e0b\u662f\u5bf9\u8be5\u9898\u76ee\u7684\u8be6\u7ec6\u89e3\u6790：<\/p>\n

\u4e00\u3001\u9898\u76ee\u63cf\u8ff0<\/h4>\n

\u670d\u52a1\u5668\u4e4b\u95f4\u53ef\u4ee5\u901a\u8fc7\u7f51\u7edc\u8fdb\u884c\u8fde\u63a5，\u8fde\u63a5\u65b9\u5f0f\u5305\u62ec\u76f4\u63a5\u76f8\u8fde\u548c\u95f4\u63a5\u8fde\u63a5\u3002\u7ed9\u51fa\u4e00\u4e2aN\u00d7N\u7684\u6570\u7ec4（\u77e9\u9635），\u4ee3\u8868N\u4e2a\u670d\u52a1\u5668，matrix[i][j] == 1\u8868\u793a\u670d\u52a1\u5668i\u548c\u670d\u52a1\u5668j\u76f4\u63a5\u8fde\u63a5，matrix[i][j] != 1\u8868\u793a\u670d\u52a1\u5668i\u548c\u670d\u52a1\u5668j\u4e0d\u76f4\u63a5\u8fde\u63a5\u3002matrix[i][i] == 1，\u5373\u670d\u52a1\u5668\u81ea\u5df1\u548c\u81ea\u5df1\u76f4\u63a5\u8fde\u63a5\u3002matrix[i][j] == matrix[j][i]，\u5373\u8fde\u63a5\u5173\u7cfb\u662f\u5bf9\u79f0\u7684\u3002<\/p>\n

\u73b0\u5728\u8981\u6c42\u8ba1\u7b97，\u6700\u5c11\u9700\u8981\u5411\u51e0\u53f0\u670d\u52a1\u5668\u53d1\u9001\u5e7f\u64ad，\u624d\u80fd\u786e\u4fdd\u6240\u6709\u670d\u52a1\u5668\u90fd\u80fd\u63a5\u6536\u5230\u5e7f\u64ad\u3002\u5e7f\u64ad\u53ef\u4ee5\u5728\u76f4\u63a5\u8fde\u63a5\u6216\u95f4\u63a5\u8fde\u63a5\u7684\u670d\u52a1\u5668\u4e4b\u95f4\u4f20\u64ad\u3002<\/p>\n

\u4e8c\u3001\u8f93\u5165\u63cf\u8ff0<\/h4>\n

\u8f93\u5165\u4e3aN\u884c，\u6bcf\u884c\u6709N\u4e2a\u6570\u5b57，\u4e3a0\u62161，\u7531\u7a7a\u683c\u5206\u9694，\u6784\u6210N*N\u7684\u6570\u7ec4，N\u7684\u8303\u56f4\u4e3a 1<=N<=50\u3002<\/p>\n

\u4e09\u3001\u8f93\u51fa\u63cf\u8ff0<\/h4>\n

\u8f93\u51fa\u4e00\u4e2a\u6570\u5b57，\u4e3a\u9700\u8981\u5e7f\u64ad\u7684\u670d\u52a1\u5668\u6570\u91cf\u3002<\/p>\n

\u793a\u4f8b 1<\/h5>\n
\u8f93\u5165：<\/h6>\n

3
\n1 1 0
\n1 1 1
\n0 1 1<\/p>\n

\u8f93\u51fa：<\/h6>\n

1<\/p>\n

\u89e3\u91ca：\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d，\u670d\u52a1\u56680\u548c\u670d\u52a1\u56681\u76f4\u63a5\u8fde\u63a5，\u670d\u52a1\u56681\u548c\u670d\u52a1\u56682\u76f4\u63a5\u8fde\u63a5，\u56e0\u6b64\u670d\u52a1\u56680\u548c\u670d\u52a1\u56682\u95f4\u63a5\u8fde\u63a5\u3002\u53ea\u9700\u8981\u5411\u5176\u4e2d\u4efb\u610f\u4e00\u53f0\u670d\u52a1\u5668\u53d1\u9001\u5e7f\u64ad，\u5176\u4ed6\u670d\u52a1\u5668\u90fd\u80fd\u63a5\u6536\u5230\u3002<\/p>\n

\u793a\u4f8b 2<\/h5>\n
\u8f93\u5165<\/h6>\n

3<\/span>
\n1<\/span> 0<\/span> 0<\/span>
\n0<\/span> 1<\/span> 0<\/span>
\n0<\/span> 0<\/span> 1<\/span><\/p>\n

\u8f93\u51fa<\/h6>\n

3<\/span><\/p>\n

\u8bf4\u660e：3\u53f0\u670d\u52a1\u5668\u4e92\u4e0d\u8fde\u63a5，\u6240\u4ee5\u9700\u8981\u5206\u522b\u5e7f\u64ad\u8fd93\u53f0\u670d\u52a1\u5668\u3002<\/p>\n

\u793a\u4f8b 3<\/h5>\n
\u8f93\u5165<\/h6>\n

2<\/span>
\n1<\/span> 1<\/span>
\n1<\/span> 1<\/span><\/p>\n

\u8f93\u51fa<\/h6>\n

1<\/span><\/p>\n

\u8bf4\u660e： 2\u53f0\u670d\u52a1\u5668\u76f8\u4e92\u8fde\u63a5，\u6240\u4ee5\u53ea\u9700\u8981\u5e7f\u64ad\u5176\u4e2d\u4e00\u53f0\u670d\u52a1\u5668\u3002<\/p>\n

\u56db\u3001\u89e3\u9898\u601d\u8def<\/h4>\n
  • \u56fe\u8bba\u5efa\u6a21：\u5c06\u670d\u52a1\u5668\u4e4b\u95f4\u7684\u8fde\u63a5\u5173\u7cfb\u770b\u4f5c\u4e00\u4e2a\u56fe，\u670d\u52a1\u5668\u662f\u56fe\u7684\u8282\u70b9，\u8fde\u63a5\u5173\u7cfb\u662f\u56fe\u7684\u8fb9\u3002\u95ee\u9898\u8f6c\u5316\u4e3a\u6c42\u56fe\u4e2d\u7684\u8fde\u901a\u5206\u91cf\u4e2a\u6570\u3002<\/li>\n
  • \u904d\u5386\u8fde\u901a\u5206\u91cf：\u4f7f\u7528\u6df1\u5ea6\u4f18\u5148\u641c\u7d22（DFS）\u6216\u5e7f\u5ea6\u4f18\u5148\u641c\u7d22（BFS）\u904d\u5386\u56fe，\u627e\u5230\u6240\u6709\u7684\u8fde\u901a\u5206\u91cf\u3002<\/li>\n
  • \u8ba1\u7b97\u5e7f\u64ad\u670d\u52a1\u5668\u6570\u91cf：\u8fde\u901a\u5206\u91cf\u7684\u4e2a\u6570\u5373\u4e3a\u9700\u8981\u5e7f\u64ad\u7684\u670d\u52a1\u5668\u6570\u91cf\u3002\u56e0\u4e3a\u6bcf\u4e2a\u8fde\u901a\u5206\u91cf\u4e2d\u7684\u670d\u52a1\u5668\u90fd\u53ef\u4ee5\u901a\u8fc7\u5e7f\u64ad\u76f8\u4e92\u4f20\u64ad\u4fe1\u606f，\u6240\u4ee5\u53ea\u9700\u8981\u5728\u6bcf\u4e2a\u8fde\u901a\u5206\u91cf\u4e2d\u9009\u62e9\u4e00\u4e2a\u670d\u52a1\u5668\u8fdb\u884c\u5e7f\u64ad\u5373\u53ef\u3002<\/li>\n
  • \u5e76\u67e5\u96c6：\u53ef\u4ee5\u4f7f\u7528\u5e76\u67e5\u96c6\u5b9e\u73b0，\u5e76\u67e5\u96c6（Union-Find）\u662f\u4e00\u79cd\u7528\u4e8e\u5904\u7406\u4e00\u4e9b\u4e0d\u4ea4\u96c6\u7684\u5408\u5e76\u53ca\u67e5\u8be2\u95ee\u9898\u7684\u6570\u636e\u7ed3\u6784，\u5b83\u53ef\u4ee5\u9ad8\u6548\u5730\u89e3\u51b3\u8fde\u901a\u6027\u95ee\u9898\u3002\u5728\u201c\u670d\u52a1\u5668\u5e7f\u64ad\u201d\u95ee\u9898\u4e2d，\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u5e76\u67e5\u96c6\u6765\u627e\u51fa\u6240\u6709\u7684\u8fde\u901a\u5206\u91cf，\u4ece\u800c\u786e\u5b9a\u9700\u8981\u5e7f\u64ad\u7684\u6700\u5c11\u670d\u52a1\u5668\u6570\u91cf\u3002<\/li>\n

    \u4e94\u3001\u4ee3\u7801\u5b9e\u73b0(DFS)<\/h4>\n

    import<\/span> java.<\/span>util.<\/span><\/span>Scanner<\/span><\/span>;<\/span><\/p>\n

    public<\/span> class<\/span> ServerBroadcast<\/span> {<\/span><\/p>\n

    \/**
    \n * \u4f7f\u7528\u6df1\u5ea6\u4f18\u5148\u641c\u7d22（DFS）\u904d\u5386\u56fe\u4e2d\u7684\u8282\u70b9
    \n * \u8be5\u65b9\u6cd5\u4e3b\u8981\u7528\u4e8e\u627e\u51fa\u56fe\u4e2d\u6240\u6709\u76f8\u4e92\u8fde\u901a\u7684\u8282\u70b9
    \n *
    \n * @param matrix \u4ee3\u8868\u56fe\u7684\u90bb\u63a5\u77e9\u9635，matrix[i][j]\u4e3a1\u8868\u793a\u8282\u70b9i\u548c\u8282\u70b9j\u4e4b\u95f4\u6709\u76f4\u63a5\u8fde\u63a5，\u4e3a0\u8868\u793a\u65e0\u76f4\u63a5\u8fde\u63a5
    \n * @param visited \u4e00\u4e2a\u5e03\u5c14\u6570\u7ec4，\u7528\u4e8e\u8bb0\u5f55\u56fe\u4e2d\u5404\u8282\u70b9\u7684\u8bbf\u95ee\u72b6\u6001，visited[i]\u4e3atrue\u8868\u793a\u8282\u70b9i\u5df2\u88ab\u8bbf\u95ee
    \n * @param node \u5f53\u524d\u8bbf\u95ee\u7684\u8282\u70b9\u7f16\u53f7，\u4ece\u8be5\u8282\u70b9\u5f00\u59cb\u8fdb\u884c\u6df1\u5ea6\u4f18\u5148\u641c\u7d22
    \n *\/<\/span>
    \n private<\/span> static<\/span> void<\/span> dfs<\/span>(<\/span>int<\/span>[<\/span>]<\/span>[<\/span>]<\/span> matrix,<\/span> boolean<\/span>[<\/span>]<\/span> visited,<\/span> int<\/span> node)<\/span> {<\/span>
    \n \/\/ \u6807\u8bb0\u5f53\u524d\u8282\u70b9\u4e3a\u5df2\u8bbf\u95ee<\/span>
    \n visited[<\/span>node]<\/span> =<\/span> true<\/span>;<\/span>
    \n \/\/ \u904d\u5386\u56fe\u4e2d\u6240\u6709\u8282\u70b9<\/span>
    \n for<\/span> (<\/span>int<\/span> i =<\/span> 0<\/span>;<\/span> i <<\/span> matrix.<\/span>length;<\/span> i++<\/span>)<\/span> {<\/span>
    \n \/\/ \u68c0\u67e5\u5f53\u524d\u8282\u70b9\u4e0e\u8282\u70b9i\u662f\u5426\u6709\u8fde\u63a5，\u4e14\u8282\u70b9i\u672a\u88ab\u8bbf\u95ee\u8fc7<\/span>
    \n if<\/span> (<\/span>matrix[<\/span>node]<\/span>[<\/span>i]<\/span> ==<\/span> 1<\/span> &&<\/span> !<\/span>visited[<\/span>i]<\/span>)<\/span> {<\/span>
    \n \/\/ \u9012\u5f52\u8c03\u7528dfs\u65b9\u6cd5，\u7ee7\u7eed\u6df1\u5ea6\u4f18\u5148\u641c\u7d22\u8282\u70b9i<\/span>
    \n dfs<\/span>(<\/span>matrix,<\/span> visited,<\/span> i)<\/span>;<\/span>
    \n }<\/span>
    \n }<\/span>
    \n }<\/span><\/p>\n

    \/**
    \n * \u8be5\u65b9\u6cd5\u901a\u8fc7\u6df1\u5ea6\u4f18\u5148\u641c\u7d22（DFS）\u6765\u8ba1\u7b97\u5728\u7ed9\u5b9a\u7684\u77e9\u9635\u4e2d\u9700\u8981\u5e7f\u64ad\u7684\u670d\u52a1\u5668\u6570\u91cf
    \n * \u6bcf\u4e2a\u670d\u52a1\u5668\u53ef\u4ee5\u4e0e\u5176\u76f4\u63a5\u76f8\u8fde\u7684\u670d\u52a1\u5668\u5171\u4eab\u5e7f\u64ad，\u56e0\u6b64\u5f62\u6210\u4e00\u4e2a\u8fde\u901a\u5206\u91cf
    \n * \u8be5\u65b9\u6cd5\u65e8\u5728\u627e\u51fa\u6709\u591a\u5c11\u4e2a\u8fd9\u6837\u7684\u8fde\u901a\u5206\u91cf，\u6bcf\u4e2a\u8fde\u901a\u5206\u91cf\u53ea\u9700\u4e00\u4e2a\u670d\u52a1\u5668\u8fdb\u884c\u5e7f\u64ad
    \n *
    \n * @param matrix \u4e00\u4e2a\u4e8c\u7ef4\u6570\u7ec4，\u8868\u793a\u670d\u52a1\u5668\u4e4b\u95f4\u7684\u8fde\u63a5\u5173\u7cfb\u77e9\u9635
    \n * matrix[i][j] == 1 \u8868\u793a\u670d\u52a1\u5668i\u548c\u670d\u52a1\u5668j\u4e4b\u95f4\u6709\u76f4\u63a5\u8fde\u63a5，\u5426\u5219\u6ca1\u6709
    \n * @return \u5e7f\u64ad\u670d\u52a1\u5668\u7684\u6570\u91cf，\u5373\u77e9\u9635\u4e2d\u8fde\u901a\u5206\u91cf\u7684\u6570\u91cf
    \n *\/<\/span>
    \n public<\/span> static<\/span> int<\/span> countBroadcastServers<\/span>(<\/span>int<\/span>[<\/span>]<\/span>[<\/span>]<\/span> matrix)<\/span> {<\/span>
    \n \/\/ \u77e9\u9635\u7684\u957f\u5ea6，\u5373\u670d\u52a1\u5668\u7684\u6570\u91cf<\/span>
    \n int<\/span> n =<\/span> matrix.<\/span>length;<\/span>
    \n \/\/ \u4e00\u4e2a\u5e03\u5c14\u6570\u7ec4，\u7528\u4e8e\u6807\u8bb0\u670d\u52a1\u5668\u662f\u5426\u5df2\u7ecf\u88ab\u8bbf\u95ee\u8fc7<\/span>
    \n boolean<\/span>[<\/span>]<\/span> visited =<\/span> new<\/span> boolean<\/span>[<\/span>n]<\/span>;<\/span>
    \n \/\/ \u521d\u59cb\u5316\u5e7f\u64ad\u670d\u52a1\u5668\u7684\u6570\u91cf\u4e3a0<\/span>
    \n int<\/span> broadcastCount =<\/span> 0<\/span>;<\/span><\/p>\n

    \/\/ \u904d\u5386\u6bcf\u4e2a\u670d\u52a1\u5668<\/span>
    \n for<\/span> (<\/span>int<\/span> i =<\/span> 0<\/span>;<\/span> i <<\/span> n;<\/span> i++<\/span>)<\/span> {<\/span>
    \n \/\/ \u5982\u679c\u5f53\u524d\u670d\u52a1\u5668\u5c1a\u672a\u88ab\u8bbf\u95ee\u8fc7<\/span>
    \n if<\/span> (<\/span>!<\/span>visited[<\/span>i]<\/span>)<\/span> {<\/span>
    \n \/\/ \u4ece\u5f53\u524d\u670d\u52a1\u5668\u5f00\u59cb\u8fdb\u884c\u6df1\u5ea6\u4f18\u5148\u641c\u7d22，\u5e76\u5c06\u641c\u7d22\u8fc7\u7a0b\u4e2d\u8bbf\u95ee\u5230\u7684\u6240\u6709\u670d\u52a1\u5668\u6807\u8bb0\u4e3a\u5df2\u8bbf\u95ee<\/span>
    \n dfs<\/span>(<\/span>matrix,<\/span> visited,<\/span> i)<\/span>;<\/span>
    \n \/\/ \u6bcf\u5b8c\u6210\u4e00\u6b21\u6df1\u5ea6\u4f18\u5148\u641c\u7d22，\u8868\u793a\u627e\u5230\u4e86\u4e00\u4e2a\u65b0\u7684\u8fde\u901a\u5206\u91cf，\u5e7f\u64ad\u670d\u52a1\u5668\u6570\u91cf\u52a01<\/span>
    \n broadcastCount++<\/span>;<\/span>
    \n }<\/span>
    \n }<\/span><\/p>\n

    \/\/ \u8fd4\u56de\u5e7f\u64ad\u670d\u52a1\u5668\u7684\u6570\u91cf<\/span>
    \n return<\/span> broadcastCount;<\/span>
    \n }<\/span><\/p>\n

    \/**
    \n * \u4e3b\u51fd\u6570\u5165\u53e3
    \n * \u8be5\u51fd\u6570\u8bfb\u53d6\u8f93\u5165\u7684\u670d\u52a1\u5668\u6570\u91cf\u53ca\u5b83\u4eec\u4e4b\u95f4\u7684\u8fde\u63a5\u60c5\u51b5，\u8ba1\u7b97\u5e76\u8f93\u51fa\u9700\u8981\u5e7f\u64ad\u7684\u670d\u52a1\u5668\u6700\u5c0f\u6570\u91cf
    \n * @param args \u547d\u4ee4\u884c\u53c2\u6570
    \n *\/<\/span>
    \n public<\/span> static<\/span> void<\/span> main<\/span>(<\/span>String<\/span>[<\/span>]<\/span> args)<\/span> {<\/span>
    \n \/\/ \u521b\u5efaScanner\u5bf9\u8c61\u4ee5\u8bfb\u53d6\u8f93\u5165\u6570\u636e<\/span>
    \n Scanner<\/span> scanner =<\/span> new<\/span> Scanner<\/span>(<\/span>System<\/span>.<\/span>in)<\/span>;<\/span><\/p>\n

    \/\/ \u8bfb\u53d6\u670d\u52a1\u5668\u6570\u91cf<\/span>
    \n int<\/span> n =<\/span> scanner.<\/span>nextInt<\/span>(<\/span>)<\/span>;<\/span>
    \n \/\/ \u6d88\u8017\u6362\u884c\u7b26<\/span>
    \n scanner.<\/span>nextLine<\/span>(<\/span>)<\/span>;<\/span><\/p>\n

    \/\/ \u521d\u59cb\u5316\u77e9\u9635<\/span>
    \n int<\/span>[<\/span>]<\/span>[<\/span>]<\/span> matrix =<\/span> new<\/span> int<\/span>[<\/span>n]<\/span>[<\/span>n]<\/span>;<\/span><\/p>\n

    \/\/ \u8bfb\u53d6\u77e9\u9635\u6570\u636e<\/span>
    \n for<\/span> (<\/span>int<\/span> i =<\/span> 0<\/span>;<\/span> i <<\/span> n;<\/span> i++<\/span>)<\/span> {<\/span>
    \n \/\/ \u5206\u5272\u8f93\u5165\u884c\u4ee5\u83b7\u53d6\u77e9\u9635\u6bcf\u4e00\u884c\u7684\u6570\u636e<\/span>
    \n String<\/span>[<\/span>]<\/span> line =<\/span> scanner.<\/span>nextLine<\/span>(<\/span>)<\/span>.<\/span>split<\/span>(<\/span>" "<\/span>)<\/span>;<\/span>
    \n for<\/span> (<\/span>int<\/span> j =<\/span> 0<\/span>;<\/span> j <<\/span> n;<\/span> j++<\/span>)<\/span> {<\/span>
    \n \/\/ \u5c06\u5b57\u7b26\u4e32\u6570\u636e\u8f6c\u6362\u4e3a\u6574\u6570\u5e76\u586b\u5145\u5230\u77e9\u9635\u4e2d<\/span>
    \n matrix[<\/span>i]<\/span>[<\/span>j]<\/span> =<\/span> Integer<\/span>.<\/span>parseInt<\/span>(<\/span>line[<\/span>j]<\/span>)<\/span>;<\/span>
    \n }<\/span>
    \n }<\/span><\/p>\n

    \/\/ \u8ba1\u7b97\u5e76\u8f93\u51fa\u9700\u8981\u5e7f\u64ad\u7684\u670d\u52a1\u5668\u6570\u91cf<\/span>
    \n int<\/span> result =<\/span> countBroadcastServers<\/span>(<\/span>matrix)<\/span>;<\/span>
    \n System<\/span>.<\/span>out.<\/span>println<\/span>(<\/span>result)<\/span>;<\/span><\/p>\n

    \/\/ \u5173\u95edScanner\u5bf9\u8c61<\/span>
    \n scanner.<\/span>close<\/span>(<\/span>)<\/span>;<\/span>
    \n }<\/span>
    \n}<\/span><\/p>\n

    \u4ee3\u7801\u89e3\u91ca：<\/h5>\n
  • \n

    DFS\u65b9\u6cd5：dfs\u65b9\u6cd5\u63a5\u53d7\u4e00\u4e2a\u4e8c\u7ef4\u6570\u7ec4（\u77e9\u9635）matrix\u3001\u4e00\u4e2a\u5e03\u5c14\u6570\u7ec4visited（\u7528\u4e8e\u8bb0\u5f55\u8282\u70b9\u662f\u5426\u88ab\u8bbf\u95ee\u8fc7）\u548c\u4e00\u4e2a\u5f53\u524d\u8282\u70b9node\u4f5c\u4e3a\u53c2\u6570\u3002\u5b83\u9012\u5f52\u5730\u8bbf\u95ee\u6240\u6709\u4e0e\u5f53\u524d\u8282\u70b9\u76f4\u63a5\u76f8\u8fde\u7684\u672a\u8bbf\u95ee\u8282\u70b9\u3002<\/p>\n<\/li>\n

  • \n

    \u8ba1\u7b97\u5e7f\u64ad\u670d\u52a1\u5668\u6570\u91cf\u7684\u65b9\u6cd5：countBroadcastServers\u65b9\u6cd5\u63a5\u53d7\u4e00\u4e2a\u4e8c\u7ef4\u6570\u7ec4（\u77e9\u9635）matrix\u4f5c\u4e3a\u53c2\u6570，\u5e76\u8fd4\u56de\u9700\u8981\u5e7f\u64ad\u7684\u670d\u52a1\u5668\u6570\u91cf\u3002\u5b83\u4f7f\u7528\u4e00\u4e2a\u5e03\u5c14\u6570\u7ec4visited\u6765\u8ddf\u8e2a\u54ea\u4e9b\u670d\u52a1\u5668\u5df2\u7ecf\u88ab\u8bbf\u95ee\u8fc7，\u5e76\u521d\u59cb\u5316\u5e7f\u64ad\u8ba1\u6570\u5668broadcastCount\u4e3a0\u3002\u7136\u540e，\u5b83\u904d\u5386\u6240\u6709\u670d\u52a1\u5668\u8282\u70b9，\u5bf9\u6bcf\u4e2a\u672a\u8bbf\u95ee\u7684\u8282\u70b9\u8c03\u7528dfs\u65b9\u6cd5，\u5e76\u5c06\u5e7f\u64ad\u8ba1\u6570\u5668\u589e\u52a01\u3002<\/p>\n<\/li>\n

  • \n

    \u4e3b\u65b9\u6cd5：main\u65b9\u6cd5\u8bfb\u53d6\u7528\u6237\u8f93\u5165，\u5305\u62ec\u670d\u52a1\u5668\u6570\u91cf\u548c\u77e9\u9635\u6570\u636e，\u7136\u540e\u8c03\u7528countBroadcastServers\u65b9\u6cd5\u8ba1\u7b97\u9700\u8981\u5e7f\u64ad\u7684\u670d\u52a1\u5668\u6570\u91cf，\u5e76\u8f93\u51fa\u7ed3\u679c\u3002<\/p>\n<\/li>\n

    \u516d\u3001\u4ee3\u7801\u5b9e\u73b0(\u5e76\u67e5\u96c6)<\/h4>\n

    import<\/span> java.<\/span>util.<\/span><\/span>Scanner<\/span><\/span>;<\/span><\/p>\n

    public<\/span> class<\/span> ServerBroadcastUnionFind<\/span> {<\/span>
    \n \/\/ \u5e76\u67e5\u96c6\u7c7b<\/span>
    \n static<\/span> class<\/span> UnionFind<\/span> {<\/span>
    \n private<\/span> int<\/span>[<\/span>]<\/span> parent;<\/span><\/p>\n

    \/\/ \u521d\u59cb\u5316\u5e76\u67e5\u96c6<\/span>
    \n public<\/span> UnionFind<\/span>(<\/span>int<\/span> n)<\/span> {<\/span>
    \n parent =<\/span> new<\/span> int<\/span>[<\/span>n]<\/span>;<\/span>
    \n for<\/span> (<\/span>int<\/span> i =<\/span> 0<\/span>;<\/span> i <<\/span> n;<\/span> i++<\/span>)<\/span> {<\/span>
    \n parent[<\/span>i]<\/span> =<\/span> i;<\/span> \/\/ \u521d\u59cb\u5316\u65f6，\u6bcf\u4e2a\u8282\u70b9\u90fd\u662f\u72ec\u7acb\u7684\u96c6\u5408，\u7236\u8282\u70b9\u6307\u5411\u81ea\u5df1<\/span>
    \n }<\/span>
    \n }<\/span><\/p>\n

    \/\/ \u67e5\u627e\u6839\u8282\u70b9（\u8def\u5f84\u538b\u7f29）<\/span>
    \n public<\/span> int<\/span> find<\/span>(<\/span>int<\/span> x)<\/span> {<\/span>
    \n if<\/span> (<\/span>parent[<\/span>x]<\/span> !=<\/span> x)<\/span> {<\/span>
    \n parent[<\/span>x]<\/span> =<\/span> find<\/span>(<\/span>parent[<\/span>x]<\/span>)<\/span>;<\/span> \/\/ \u8def\u5f84\u538b\u7f29，\u76f4\u63a5\u8fde\u63a5\u5230\u6839\u8282\u70b9<\/span>
    \n }<\/span>
    \n return<\/span> parent[<\/span>x]<\/span>;<\/span>
    \n }<\/span><\/p>\n

    \/\/ \u5408\u5e76\u4e24\u4e2a\u96c6\u5408<\/span>
    \n public<\/span> void<\/span> union<\/span>(<\/span>int<\/span> x,<\/span> int<\/span> y)<\/span> {<\/span>
    \n int<\/span> rootX =<\/span> find<\/span>(<\/span>x)<\/span>;<\/span>
    \n int<\/span> rootY =<\/span> find<\/span>(<\/span>y)<\/span>;<\/span>
    \n if<\/span> (<\/span>rootX !=<\/span> rootY)<\/span> {<\/span>
    \n parent[<\/span>rootX]<\/span> =<\/span> rootY;<\/span> \/\/ \u5c06\u4e00\u4e2a\u96c6\u5408\u7684\u6839\u8282\u70b9\u6307\u5411\u53e6\u4e00\u4e2a\u96c6\u5408\u7684\u6839\u8282\u70b9，\u4ece\u800c\u5408\u5e76\u4e24\u4e2a\u96c6\u5408<\/span>
    \n }<\/span>
    \n }<\/span><\/p>\n

    \/\/ \u83b7\u53d6\u8fde\u901a\u5206\u91cf\u7684\u6570\u91cf<\/span>
    \n public<\/span> int<\/span> countComponents<\/span>(<\/span>)<\/span> {<\/span>
    \n int<\/span> count =<\/span> 0<\/span>;<\/span>
    \n for<\/span> (<\/span>int<\/span> i =<\/span> 0<\/span>;<\/span> i <<\/span> parent.<\/span>length;<\/span> i++<\/span>)<\/span> {<\/span>
    \n if<\/span> (<\/span>find<\/span>(<\/span>i)<\/span> ==<\/span> i)<\/span> {<\/span> \/\/ \u5982\u679c\u8282\u70b9\u81ea\u5df1\u662f\u6839\u8282\u70b9，\u8bf4\u660e\u662f\u4e00\u4e2a\u65b0\u7684\u8fde\u901a\u5206\u91cf<\/span>
    \n count++<\/span>;<\/span>
    \n }<\/span>
    \n }<\/span>
    \n return<\/span> count;<\/span>
    \n }<\/span>
    \n }<\/span><\/p>\n

    public<\/span> static<\/span> void<\/span> main<\/span>(<\/span>String<\/span>[<\/span>]<\/span> args)<\/span> {<\/span>
    \n Scanner<\/span> scanner =<\/span> new<\/span> Scanner<\/span>(<\/span>System<\/span>.<\/span>in)<\/span>;<\/span><\/p>\n

    \/\/ \u8bfb\u53d6\u670d\u52a1\u5668\u6570\u91cf<\/span>
    \n int<\/span> n =<\/span> scanner.<\/span>nextInt<\/span>(<\/span>)<\/span>;<\/span>
    \n scanner.<\/span>nextLine<\/span>(<\/span>)<\/span>;<\/span> \/\/ \u6d88\u8017\u6362\u884c\u7b26<\/span><\/p>\n

    \/\/ \u521d\u59cb\u5316\u5e76\u67e5\u96c6<\/span>
    \n UnionFind<\/span> uf =<\/span> new<\/span> UnionFind<\/span>(<\/span>n)<\/span>;<\/span><\/p>\n

    \/\/ \u8bfb\u53d6\u77e9\u9635\u6570\u636e\u5e76\u5408\u5e76\u96c6\u5408<\/span>
    \n for<\/span> (<\/span>int<\/span> i =<\/span> 0<\/span>;<\/span> i <<\/span> n;<\/span> i++<\/span>)<\/span> {<\/span>
    \n String<\/span>[<\/span>]<\/span> line =<\/span> scanner.<\/span>nextLine<\/span>(<\/span>)<\/span>.<\/span>split<\/span>(<\/span>" "<\/span>)<\/span>;<\/span>
    \n for<\/span> (<\/span>int<\/span> j =<\/span> 0<\/span>;<\/span> j <<\/span> n;<\/span> j++<\/span>)<\/span> {<\/span>
    \n if<\/span> (<\/span>i !=<\/span> j &&<\/span> Integer<\/span>.<\/span>parseInt<\/span>(<\/span>line[<\/span>j]<\/span>)<\/span> ==<\/span> 1<\/span>)<\/span> {<\/span> \/\/ \u6ce8\u610fi != j，\u907f\u514d\u5c06\u8282\u70b9\u4e0e\u81ea\u5df1\u5408\u5e76<\/span>
    \n uf.<\/span>union<\/span>(<\/span>i,<\/span> j)<\/span>;<\/span>
    \n }<\/span>
    \n }<\/span>
    \n }<\/span><\/p>\n

    \/\/ \u8ba1\u7b97\u5e76\u8f93\u51fa\u9700\u8981\u5e7f\u64ad\u7684\u670d\u52a1\u5668\u6570\u91cf（\u5373\u8fde\u901a\u5206\u91cf\u7684\u6570\u91cf）<\/span>
    \n int<\/span> result =<\/span> uf.<\/span>countComponents<\/span>(<\/span>)<\/span>;<\/span>
    \n System<\/span>.<\/span>out.<\/span>println<\/span>(<\/span>result)<\/span>;<\/span><\/p>\n

    scanner.<\/span>close<\/span>(<\/span>)<\/span>;<\/span>
    \n }<\/span>
    \n}<\/span><\/p>\n

    \u4ee3\u7801\u89e3\u91ca：<\/h5>\n
  • \n

    \u5e76\u67e5\u96c6\u7c7b：UnionFind\u7c7b\u5b9e\u73b0\u4e86\u5e76\u67e5\u96c6\u7684\u57fa\u672c\u529f\u80fd，\u5305\u62ec\u521d\u59cb\u5316\u3001\u67e5\u627e\u6839\u8282\u70b9\u3001\u5408\u5e76\u96c6\u5408\u548c\u8ba1\u7b97\u8fde\u901a\u5206\u91cf\u7684\u6570\u91cf\u3002<\/p>\n<\/li>\n

  • \n

    \u521d\u59cb\u5316\u5e76\u67e5\u96c6：\u5728main\u65b9\u6cd5\u4e2d，\u6211\u4eec\u9996\u5148\u8bfb\u53d6\u670d\u52a1\u5668\u6570\u91cfn，\u7136\u540e\u521b\u5efa\u4e00\u4e2a\u5927\u5c0f\u4e3an\u7684\u5e76\u67e5\u96c6\u3002<\/p>\n<\/li>\n

  • \n

    \u8bfb\u53d6\u77e9\u9635\u6570\u636e\u5e76\u5408\u5e76\u96c6\u5408：\u6211\u4eec\u904d\u5386\u77e9\u9635，\u5bf9\u4e8e\u6bcf\u4e2amatrix[i][j] == 1\u4e14i != j\u7684\u60c5\u51b5，\u8c03\u7528union\u65b9\u6cd5\u5c06\u670d\u52a1\u5668i\u548c\u670d\u52a1\u5668j\u6240\u5c5e\u7684\u96c6\u5408\u5408\u5e76\u3002<\/p>\n<\/li>\n

  • \n

    \u8ba1\u7b97\u5e76\u8f93\u51fa\u9700\u8981\u5e7f\u64ad\u7684\u670d\u52a1\u5668\u6570\u91cf：\u6700\u540e，\u6211\u4eec\u8c03\u7528countComponents\u65b9\u6cd5\u8ba1\u7b97\u8fde\u901a\u5206\u91cf\u7684\u6570\u91cf，\u5e76\u8f93\u51fa\u7ed3\u679c\u3002\u8fd9\u4e2a\u6570\u91cf\u5c31\u662f\u9700\u8981\u5e7f\u64ad\u7684\u6700\u5c11\u670d\u52a1\u5668\u6570\u91cf\u3002<\/p>\n<\/li>\n

    \u4e03\u3001\u8fd0\u884c\u793a\u4f8b\u89e3\u6790<\/h4>\n

    \u4ee5\u4e0b\u662f\u5bf9ServerBroadcast\u7c7b\u53ca\u5176main\u65b9\u6cd5\u7684\u8be6\u7ec6\u8fd0\u884c\u793a\u4f8b\u89e3\u6790\u6b65\u9aa4：<\/p>\n

    1. \u521d\u59cb\u5316<\/h5>\n
      \n
    • \u670d\u52a1\u5668\u6570\u91cf：\u9996\u5148，\u7a0b\u5e8f\u901a\u8fc7Scanner\u8bfb\u53d6\u670d\u52a1\u5668\u6570\u91cfn，\u8fd9\u91cc\u662f3\u3002<\/li>\n
    • \u77e9\u9635\u521d\u59cb\u5316：\u7136\u540e，\u7a0b\u5e8f\u521d\u59cb\u5316\u4e00\u4e2an x n\u7684\u77e9\u9635matrix，\u7528\u4e8e\u8868\u793a\u670d\u52a1\u5668\u4e4b\u95f4\u7684\u8fde\u63a5\u5173\u7cfb\u3002<\/li>\n<\/ul>\n
      2. \u8f93\u5165\u77e9\u9635\u6570\u636e<\/h5>\n
        \n
      • \u7528\u6237\u8f93\u5165\u77e9\u9635\u7684\u6bcf\u4e00\u884c\u6570\u636e，\u8fd9\u91cc\u8f93\u5165\u7684\u662f：1 0 0
        \n0 1 0
        \n0 0 1\n <\/li>\n
      • \u7a0b\u5e8f\u5c06\u8fd9\u4e9b\u6570\u636e\u89e3\u6790\u4e3a\u6574\u6570，\u5e76\u586b\u5145\u5230matrix\u4e2d\u3002\u586b\u5145\u540e\u7684\u77e9\u9635\u8868\u793a\u5982\u4e0b：matrix[0][0] = 1, matrix[0][1] = 0, matrix[0][2] = 0
        \nmatrix[1][0] = 0, matrix[1][1] = 1, matrix[1][2] = 0
        \nmatrix[2][0] = 0, matrix[2][1] = 0, matrix[2][2] = 1\n <\/li>\n<\/ul>\n
        3. \u6df1\u5ea6\u4f18\u5148\u641c\u7d22（DFS）\u51c6\u5907<\/h5>\n
          \n
        • \u521b\u5efa\u4e00\u4e2a\u5e03\u5c14\u6570\u7ec4visited，\u957f\u5ea6\u4e3an，\u7528\u4e8e\u8bb0\u5f55\u6bcf\u4e2a\u670d\u52a1\u5668\u662f\u5426\u5df2\u88ab\u8bbf\u95ee\u3002\u521d\u59cb\u65f6，\u6240\u6709\u670d\u52a1\u5668\u90fd\u672a\u88ab\u8bbf\u95ee，\u56e0\u6b64visited\u6570\u7ec4\u7684\u6240\u6709\u5143\u7d20\u90fd\u8bbe\u7f6e\u4e3afalse\u3002<\/li>\n<\/ul>\n
          4. \u6267\u884cDFS\u5e76\u8ba1\u7b97\u8fde\u901a\u5206\u91cf<\/h5>\n
            \n
          • \u7a0b\u5e8f\u904d\u5386\u6bcf\u4e2a\u670d\u52a1\u5668（\u5373\u904d\u5386matrix\u7684\u6bcf\u4e00\u884c\u548c\u6bcf\u4e00\u5217），\u5e76\u5bf9\u6bcf\u4e2a\u672a\u8bbf\u95ee\u7684\u670d\u52a1\u5668\u6267\u884cDFS\u3002<\/li>\n
          • \u5bf9\u4e8e\u7b2c\u4e00\u4e2a\u670d\u52a1\u5668（\u7d22\u5f15\u4e3a0），\u7531\u4e8e\u5b83\u672a\u88ab\u8bbf\u95ee，\u7a0b\u5e8f\u4ece\u5b83\u5f00\u59cb\u8fdb\u884cDFS：\n
              \n
            • \u6807\u8bb0\u670d\u52a1\u56680\u4e3a\u5df2\u8bbf\u95ee\u3002<\/li>\n
            • \u68c0\u67e5\u670d\u52a1\u56680\u4e0e\u6240\u6709\u5176\u4ed6\u670d\u52a1\u5668\u7684\u8fde\u63a5\u5173\u7cfb：\n
                \n
              • \u670d\u52a1\u56680\u4e0e\u670d\u52a1\u56681\u65e0\u8fde\u63a5（matrix[0][1] = 0），\u56e0\u6b64\u4e0d\u7ee7\u7eed\u641c\u7d22\u3002<\/li>\n
              • \u670d\u52a1\u56680\u4e0e\u670d\u52a1\u56682\u65e0\u8fde\u63a5（matrix[0][2] = 0），\u56e0\u6b64\u4e0d\u7ee7\u7eed\u641c\u7d22\u3002<\/li>\n<\/ul>\n<\/li>\n
              • \u7531\u4e8e\u6ca1\u6709\u8fdb\u4e00\u6b65\u7684\u8fde\u63a5，DFS\u7ed3\u675f，\u4f46\u627e\u5230\u4e86\u4e00\u4e2a\u65b0\u7684\u8fde\u901a\u5206\u91cf（\u53ea\u5305\u542b\u670d\u52a1\u56680）\u3002<\/li>\n<\/ul>\n<\/li>\n
              • \u63a5\u4e0b\u6765，\u7a0b\u5e8f\u68c0\u67e5\u670d\u52a1\u56681（\u7d22\u5f15\u4e3a1），\u5b83\u4e5f\u672a\u88ab\u8bbf\u95ee：\n
                  \n
                • \u6807\u8bb0\u670d\u52a1\u56681\u4e3a\u5df2\u8bbf\u95ee\u3002<\/li>\n
                • \u68c0\u67e5\u670d\u52a1\u56681\u4e0e\u6240\u6709\u5176\u4ed6\u670d\u52a1\u5668\u7684\u8fde\u63a5\u5173\u7cfb：\n
                    \n
                  • \u670d\u52a1\u56681\u4e0e\u670d\u52a1\u56680\u65e0\u8fde\u63a5（\u56e0\u4e3a0\u5df2\u88ab\u8bbf\u95ee\u8fc7，\u6240\u4ee5\u8fd9\u91cc\u5b9e\u9645\u4e0a\u4e0d\u4f1a\u7ee7\u7eed\u641c\u7d22，\u4f46\u903b\u8f91\u4e0a\u5b83\u4eec\u65e0\u76f4\u63a5\u8fde\u63a5）\u3002<\/li>\n
                  • \u670d\u52a1\u56681\u4e0e\u670d\u52a1\u56682\u65e0\u8fde\u63a5（matrix[1][2] = 0），\u56e0\u6b64\u4e0d\u7ee7\u7eed\u641c\u7d22\u3002<\/li>\n<\/ul>\n<\/li>\n
                  • \u540c\u6837，DFS\u7ed3\u675f，\u627e\u5230\u4e86\u53e6\u4e00\u4e2a\u65b0\u7684\u8fde\u901a\u5206\u91cf（\u53ea\u5305\u542b\u670d\u52a1\u56681）\u3002<\/li>\n<\/ul>\n<\/li>\n
                  • \u6700\u540e，\u7a0b\u5e8f\u68c0\u67e5\u670d\u52a1\u56682（\u7d22\u5f15\u4e3a2），\u5b83\u540c\u6837\u672a\u88ab\u8bbf\u95ee：\n
                      \n
                    • \u6807\u8bb0\u670d\u52a1\u56682\u4e3a\u5df2\u8bbf\u95ee\u3002<\/li>\n
                    • \u68c0\u67e5\u670d\u52a1\u56682\u4e0e\u6240\u6709\u5176\u4ed6\u670d\u52a1\u5668\u7684\u8fde\u63a5\u5173\u7cfb，\u4f46\u53d1\u73b0\u90fd\u6ca1\u6709\u76f4\u63a5\u8fde\u63a5（\u6216\u8005\u5df2\u7ecf\u88ab\u8bbf\u95ee\u8fc7）\u3002<\/li>\n
                    • DFS\u7ed3\u675f，\u627e\u5230\u4e86\u6700\u540e\u4e00\u4e2a\u65b0\u7684\u8fde\u901a\u5206\u91cf（\u53ea\u5305\u542b\u670d\u52a1\u56682）\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n
                      5. \u8ba1\u7b97\u7ed3\u679c<\/h5>\n
                        \n
                      • \u6bcf\u6b21DFS\u5b8c\u6210\u540e，\u8fde\u901a\u5206\u91cf\u7684\u6570\u91cf（\u5373\u9700\u8981\u5e7f\u64ad\u7684\u670d\u52a1\u5668\u6570\u91cf）\u589e\u52a01\u3002<\/li>\n
                      • \u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d，\u6709\u4e09\u4e2a\u72ec\u7acb\u7684\u8fde\u901a\u5206\u91cf（\u6bcf\u4e2a\u670d\u52a1\u5668\u5404\u81ea\u4e3a\u4e00\u4e2a\u5206\u91cf），\u56e0\u6b64broadcastCount\u6700\u7ec8\u4e3a3\u3002<\/li>\n<\/ul>\n
                        6. \u8f93\u51fa\u7ed3\u679c<\/h5>\n
                          \n
                        • \u7a0b\u5e8f\u8f93\u51fa\u9700\u8981\u5e7f\u64ad\u7684\u670d\u52a1\u5668\u6570\u91cf，\u8fd9\u91cc\u662f3\u3002<\/li>\n<\/ul>\n
                          \u603b\u7ed3<\/h5>\n

                          \u5bf9\u4e8e\u8f93\u5165\u7684\u77e9\u9635：<\/p>\n

                          1 0 0
                          \n0 1 0
                          \n0 0 1<\/p>\n

                          \u6bcf\u4e2a\u670d\u52a1\u5668\u90fd\u5404\u81ea\u72ec\u7acb，\u6ca1\u6709\u670d\u52a1\u5668\u4e4b\u95f4\u662f\u76f4\u63a5\u8fde\u901a\u7684\u3002\u56e0\u6b64，\u9700\u8981\u4e09\u4e2a\u670d\u52a1\u5668\u6765\u8fdb\u884c\u5e7f\u64ad，\u4ee5\u786e\u4fdd\u6240\u6709\u670d\u52a1\u5668\u90fd\u80fd\u63a5\u6536\u5230\u4fe1\u606f\u3002<\/p>\n

                          \u516b\u3001\u6ce8\u610f\u4e8b\u9879<\/h4>\n
                        • \u8f93\u5165\u9a8c\u8bc1：\u5728\u5b9e\u9645\u5e94\u7528\u4e2d，\u9700\u8981\u5bf9\u8f93\u5165\u8fdb\u884c\u9a8c\u8bc1，\u786e\u4fdd\u8f93\u5165\u7684\u77e9\u9635\u662f\u5408\u6cd5\u7684N\u00d7N\u77e9\u9635，\u4e14\u5143\u7d20\u662f0\u62161\u3002<\/li>\n
                        • \u6027\u80fd\u4f18\u5316：\u5bf9\u4e8e\u5927\u89c4\u6a21\u7684\u8f93\u5165，\u53ef\u4ee5\u8003\u8651\u4f7f\u7528\u66f4\u9ad8\u6548\u7684\u6570\u636e\u7ed3\u6784\u548c\u7b97\u6cd5\u6765\u4f18\u5316\u6027\u80fd\u3002\u4f8b\u5982，\u53ef\u4ee5\u4f7f\u7528\u90bb\u63a5\u8868\u6765\u8868\u793a\u56fe，\u4ee5\u51cf\u5c11\u7a7a\u95f4\u590d\u6742\u5ea6\u3002<\/li>\n
                        • \u8fb9\u754c\u60c5\u51b5：\u9700\u8981\u6ce8\u610f\u5904\u7406\u8fb9\u754c\u60c5\u51b5，\u4f8b\u5982\u5f53N\u4e3a1\u65f6，\u53ea\u9700\u8981\u5411\u552f\u4e00\u7684\u4e00\u53f0\u670d\u52a1\u5668\u53d1\u9001\u5e7f\u64ad\u5373\u53ef\u3002<\/li>\n

                          \u7efc\u4e0a\u6240\u8ff0，\u534e\u4e3aOD\u673a\u8bd5\u4e2d\u7684\u201c\u670d\u52a1\u5668\u5e7f\u64ad\u201d\u9898\u76ee\u662f\u4e00\u4e2a\u5178\u578b\u7684\u56fe\u8bba\u95ee\u9898，\u53ef\u4ee5\u901a\u8fc7\u904d\u5386\u8fde\u901a\u5206\u91cf\u6765\u89e3\u51b3\u3002\u638c\u63e1\u6df1\u5ea6\u4f18\u5148\u641c\u7d22\u6216\u5e7f\u5ea6\u4f18\u5148\u641c\u7d22\u7b49\u56fe\u8bba\u7b97\u6cd5\u662f\u89e3\u51b3\u8fd9\u7c7b\u95ee\u9898\u7684\u5173\u952e\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

                          \u6587\u7ae0\u6d4f\u89c8\u9605\u8bfb2.1k\u6b21\uff0c\u70b9\u8d5e76\u6b21\uff0c\u6536\u85cf14\u6b21\u3002\u670d\u52a1\u5668\u4e4b\u95f4\u53ef\u4ee5\u901a\u8fc7\u7f51\u7edc\u8fdb\u884c\u8fde\u63a5\uff0c\u8fde\u63a5\u65b9\u5f0f\u5305\u62ec\u76f4\u63a5\u76f8\u8fde\u548c\u95f4\u63a5\u8fde\u63a5\u3002\u7ed9\u51fa\u4e00\u4e2aN\u00d7N\u7684\u6570\u7ec4\uff08\u77e9\u9635\uff09\uff0c\u4ee3\u8868N\u4e2a\u670d\u52a1\u5668\uff0cmatrix[i][j] == 1\u8868\u793a\u670d\u52a1\u5668i\u548c\u670d\u52a1\u5668j\u76f4\u63a5\u8fde\u63a5\uff0cmatrix[i][j] != 1\u8868\u793a\u670d\u52a1\u5668i\u548c\u670d\u52a1\u5668j\u4e0d\u76f4\u63a5\u8fde\u63a5\u3002matrix[i][i] == 1\uff0c\u5373\u670d\u52a1\u5668\u81ea\u5df1\u548c\u81ea\u5df1\u76f4\u63a5\u8fde\u63a5\u3002matrix[i][j] == matrix[j][i]\uff0c\u5373\u8fde\u63a5\u5173\u7cfb\u662f\u5bf9\u79f0\u7684\u3002_\u534e\u4e3aod \u670d\u52a1\u5668\u5e7f\u64ad<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[99,67,447,190,1813,43,427,44],"topic":[],"class_list":["post-23597","post","type-post","status-publish","format-standard","hentry","category-server","tag-java","tag-67","tag-od","tag-190","tag-1813","tag-43","tag-427","tag-44"],"yoast_head":"\n\u534e\u4e3aOD\u673a\u8bd5\u771f\u9898-\u670d\u52a1\u5668\u5e7f\u64ad - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.wsisp.com\/helps\/23597.html\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u534e\u4e3aOD\u673a\u8bd5\u771f\u9898-\u670d\u52a1\u5668\u5e7f\u64ad - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3\" \/>\n<meta property=\"og:description\" content=\"\u6587\u7ae0\u6d4f\u89c8\u9605\u8bfb2.1k\u6b21\uff0c\u70b9\u8d5e76\u6b21\uff0c\u6536\u85cf14\u6b21\u3002\u670d\u52a1\u5668\u4e4b\u95f4\u53ef\u4ee5\u901a\u8fc7\u7f51\u7edc\u8fdb\u884c\u8fde\u63a5\uff0c\u8fde\u63a5\u65b9\u5f0f\u5305\u62ec\u76f4\u63a5\u76f8\u8fde\u548c\u95f4\u63a5\u8fde\u63a5\u3002\u7ed9\u51fa\u4e00\u4e2aN\u00d7N\u7684\u6570\u7ec4\uff08\u77e9\u9635\uff09\uff0c\u4ee3\u8868N\u4e2a\u670d\u52a1\u5668\uff0cmatrix[i][j] == 1\u8868\u793a\u670d\u52a1\u5668i\u548c\u670d\u52a1\u5668j\u76f4\u63a5\u8fde\u63a5\uff0cmatrix[i][j] != 1\u8868\u793a\u670d\u52a1\u5668i\u548c\u670d\u52a1\u5668j\u4e0d\u76f4\u63a5\u8fde\u63a5\u3002matrix[i][i] == 1\uff0c\u5373\u670d\u52a1\u5668\u81ea\u5df1\u548c\u81ea\u5df1\u76f4\u63a5\u8fde\u63a5\u3002matrix[i][j] == matrix[j][i]\uff0c\u5373\u8fde\u63a5\u5173\u7cfb\u662f\u5bf9\u79f0\u7684\u3002_\u534e\u4e3aod \u670d\u52a1\u5668\u5e7f\u64ad\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.wsisp.com\/helps\/23597.html\" \/>\n<meta property=\"og:site_name\" content=\"\u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3\" \/>\n<meta property=\"article:published_time\" content=\"2025-04-19T00:07:14+00:00\" \/>\n<meta name=\"author\" content=\"admin\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u4f5c\u8005\" \/>\n\t<meta name=\"twitter:data1\" content=\"admin\" \/>\n\t<meta name=\"twitter:label2\" content=\"\u9884\u8ba1\u9605\u8bfb\u65f6\u95f4\" \/>\n\t<meta name=\"twitter:data2\" content=\"4 \u5206\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.wsisp.com\/helps\/23597.html\",\"url\":\"https:\/\/www.wsisp.com\/helps\/23597.html\",\"name\":\"\u534e\u4e3aOD\u673a\u8bd5\u771f\u9898-\u670d\u52a1\u5668\u5e7f\u64ad - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3\",\"isPartOf\":{\"@id\":\"https:\/\/www.wsisp.com\/helps\/#website\"},\"datePublished\":\"2025-04-19T00:07:14+00:00\",\"dateModified\":\"2025-04-19T00:07:14+00:00\",\"author\":{\"@id\":\"https:\/\/www.wsisp.com\/helps\/#\/schema\/person\/358e386c577a3ab51c4493330a20ad41\"},\"breadcrumb\":{\"@id\":\"https:\/\/www.wsisp.com\/helps\/23597.html#breadcrumb\"},\"inLanguage\":\"zh-Hans\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/www.wsisp.com\/helps\/23597.html\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/www.wsisp.com\/helps\/23597.html#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"\u9996\u9875\",\"item\":\"https:\/\/www.wsisp.com\/helps\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"\u534e\u4e3aOD\u673a\u8bd5\u771f\u9898---\u670d\u52a1\u5668\u5e7f\u64ad\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/www.wsisp.com\/helps\/#website\",\"url\":\"https:\/\/www.wsisp.com\/helps\/\",\"name\":\"\u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3\",\"description\":\"\u9999\u6e2f\u670d\u52a1\u5668_\u9999\u6e2f\u4e91\u670d\u52a1\u5668\u8d44\u8baf_\u670d\u52a1\u5668\u5e2e\u52a9\u6587\u6863_\u670d\u52a1\u5668\u6559\u7a0b\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/www.wsisp.com\/helps\/?s={search_term_string}\"},\"query-input\":\"required name=search_term_string\"}],\"inLanguage\":\"zh-Hans\"},{\"@type\":\"Person\",\"@id\":\"https:\/\/www.wsisp.com\/helps\/#\/schema\/person\/358e386c577a3ab51c4493330a20ad41\",\"name\":\"admin\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"zh-Hans\",\"@id\":\"https:\/\/www.wsisp.com\/helps\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/gravatar.wp-china-yes.net\/avatar\/?s=96&d=mystery\",\"contentUrl\":\"https:\/\/gravatar.wp-china-yes.net\/avatar\/?s=96&d=mystery\",\"caption\":\"admin\"},\"sameAs\":[\"http:\/\/wp.wsisp.com\"],\"url\":\"https:\/\/www.wsisp.com\/helps\/author\/admin\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"\u534e\u4e3aOD\u673a\u8bd5\u771f\u9898-\u670d\u52a1\u5668\u5e7f\u64ad - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.wsisp.com\/helps\/23597.html","og_locale":"zh_CN","og_type":"article","og_title":"\u534e\u4e3aOD\u673a\u8bd5\u771f\u9898-\u670d\u52a1\u5668\u5e7f\u64ad - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3","og_description":"\u6587\u7ae0\u6d4f\u89c8\u9605\u8bfb2.1k\u6b21\uff0c\u70b9\u8d5e76\u6b21\uff0c\u6536\u85cf14\u6b21\u3002\u670d\u52a1\u5668\u4e4b\u95f4\u53ef\u4ee5\u901a\u8fc7\u7f51\u7edc\u8fdb\u884c\u8fde\u63a5\uff0c\u8fde\u63a5\u65b9\u5f0f\u5305\u62ec\u76f4\u63a5\u76f8\u8fde\u548c\u95f4\u63a5\u8fde\u63a5\u3002\u7ed9\u51fa\u4e00\u4e2aN\u00d7N\u7684\u6570\u7ec4\uff08\u77e9\u9635\uff09\uff0c\u4ee3\u8868N\u4e2a\u670d\u52a1\u5668\uff0cmatrix[i][j] == 1\u8868\u793a\u670d\u52a1\u5668i\u548c\u670d\u52a1\u5668j\u76f4\u63a5\u8fde\u63a5\uff0cmatrix[i][j] != 1\u8868\u793a\u670d\u52a1\u5668i\u548c\u670d\u52a1\u5668j\u4e0d\u76f4\u63a5\u8fde\u63a5\u3002matrix[i][i] == 1\uff0c\u5373\u670d\u52a1\u5668\u81ea\u5df1\u548c\u81ea\u5df1\u76f4\u63a5\u8fde\u63a5\u3002matrix[i][j] == matrix[j][i]\uff0c\u5373\u8fde\u63a5\u5173\u7cfb\u662f\u5bf9\u79f0\u7684\u3002_\u534e\u4e3aod \u670d\u52a1\u5668\u5e7f\u64ad","og_url":"https:\/\/www.wsisp.com\/helps\/23597.html","og_site_name":"\u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3","article_published_time":"2025-04-19T00:07:14+00:00","author":"admin","twitter_card":"summary_large_image","twitter_misc":{"\u4f5c\u8005":"admin","\u9884\u8ba1\u9605\u8bfb\u65f6\u95f4":"4 \u5206"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/www.wsisp.com\/helps\/23597.html","url":"https:\/\/www.wsisp.com\/helps\/23597.html","name":"\u534e\u4e3aOD\u673a\u8bd5\u771f\u9898-\u670d\u52a1\u5668\u5e7f\u64ad - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3","isPartOf":{"@id":"https:\/\/www.wsisp.com\/helps\/#website"},"datePublished":"2025-04-19T00:07:14+00:00","dateModified":"2025-04-19T00:07:14+00:00","author":{"@id":"https:\/\/www.wsisp.com\/helps\/#\/schema\/person\/358e386c577a3ab51c4493330a20ad41"},"breadcrumb":{"@id":"https:\/\/www.wsisp.com\/helps\/23597.html#breadcrumb"},"inLanguage":"zh-Hans","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.wsisp.com\/helps\/23597.html"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/www.wsisp.com\/helps\/23597.html#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"\u9996\u9875","item":"https:\/\/www.wsisp.com\/helps"},{"@type":"ListItem","position":2,"name":"\u534e\u4e3aOD\u673a\u8bd5\u771f\u9898---\u670d\u52a1\u5668\u5e7f\u64ad"}]},{"@type":"WebSite","@id":"https:\/\/www.wsisp.com\/helps\/#website","url":"https:\/\/www.wsisp.com\/helps\/","name":"\u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3","description":"\u9999\u6e2f\u670d\u52a1\u5668_\u9999\u6e2f\u4e91\u670d\u52a1\u5668\u8d44\u8baf_\u670d\u52a1\u5668\u5e2e\u52a9\u6587\u6863_\u670d\u52a1\u5668\u6559\u7a0b","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.wsisp.com\/helps\/?s={search_term_string}"},"query-input":"required name=search_term_string"}],"inLanguage":"zh-Hans"},{"@type":"Person","@id":"https:\/\/www.wsisp.com\/helps\/#\/schema\/person\/358e386c577a3ab51c4493330a20ad41","name":"admin","image":{"@type":"ImageObject","inLanguage":"zh-Hans","@id":"https:\/\/www.wsisp.com\/helps\/#\/schema\/person\/image\/","url":"https:\/\/gravatar.wp-china-yes.net\/avatar\/?s=96&d=mystery","contentUrl":"https:\/\/gravatar.wp-china-yes.net\/avatar\/?s=96&d=mystery","caption":"admin"},"sameAs":["http:\/\/wp.wsisp.com"],"url":"https:\/\/www.wsisp.com\/helps\/author\/admin"}]}},"_links":{"self":[{"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/posts\/23597","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/comments?post=23597"}],"version-history":[{"count":0,"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/posts\/23597\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/media?parent=23597"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/categories?post=23597"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/tags?post=23597"},{"taxonomy":"topic","embeddable":true,"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/topic?post=23597"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}