{"id":717,"date":"2020-06-25T02:27:41","date_gmt":"2020-06-24T18:27:41","guid":{"rendered":"http:\/\/www.guanhaobo.cn\/?p=717"},"modified":"2020-06-25T02:27:41","modified_gmt":"2020-06-24T18:27:41","slug":"jz17-%e6%a0%91%e7%9a%84%e5%ad%90%e7%bb%93%e6%9e%84","status":"publish","type":"post","link":"https:\/\/www.guanhaobo.cn\/?p=717","title":{"rendered":"JZ17 \u2014 \u6811\u7684\u5b50\u7ed3\u6784"},"content":{"rendered":"

\u9898\u76ee\u63cf\u8ff0<\/h3>\n

\u8f93\u5165\u4e24\u68f5\u4e8c\u53c9\u6811A\uff0cB\uff0c\u5224\u65adB\u662f\u4e0d\u662fA\u7684\u5b50\u7ed3\u6784\u3002\uff08ps\uff1a\u6211\u4eec\u7ea6\u5b9a\u7a7a\u6811\u4e0d\u662f\u4efb\u610f\u4e00\u4e2a\u6811\u7684\u5b50\u7ed3\u6784\uff09<\/p>\n

\u9898\u76ee\u5206\u6790<\/h3>\n

\u5224\u65adB\u662f\u4e0d\u662fA\u7684\u5b50\u7ed3\u6784<\/code>\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u7b56\u7565\uff1a
\n1. A\u6216B\u4e3a\u7a7a\uff0c\u8fd4\u56de\u5047
\n2. \u5224\u65adA\u548cB\u662f\u5426\u76f8\u540c<\/code>
\n3. \u5224\u65adB\u662f\u4e0d\u662fA\u7684\u5de6\u5b50\u6811<\/code>\u7684\u5b50\u7ed3\u6784
\n4. \u5224\u65adB\u662f\u4e0d\u662fA\u7684\u53f3\u5b50\u6811<\/code>\u7684\u5b50\u7ed3\u6784
\n5. 234\u4e09\u6761\u6ee1\u8db3\u5176\u4e00\u5219\u8fd4\u56de\u771f\uff0c\u5426\u5219\u8fd4\u56de\u5047<\/p>\n

\u5224\u65adA\u548cB\u662f\u5426\u76f8\u540c<\/code>\uff0c\u5e76\u4e0d\u9700\u8981\u5b8c\u5168\u76f8\u540c\uff0c\u5373A\u7684\u4e0b\u9762\u53ef\u4ee5\u6bd4B\u591a\u4e00\u70b9\uff0c\u7b56\u7565\u5982\u4e0b\uff1a
\n1. B\u4e3a\u7a7a\u8fd4\u56de\u771f\uff0cA\u4e3a\u7a7a\u8fd4\u56de\u5047
\n2. \u5224\u65adA\u548cB\u5bf9\u5e94\u7684\u503c\u662f\u5426\u76f8\u540c
\n3. \u5224\u65adA\u7684\u5de6\u5b50\u6811<\/code>\u548cB\u7684\u5de6\u5b50\u6811<\/code>\u662f\u5426\u76f8\u540c
\n4. \u5224\u65adA\u7684\u53f3\u5b50\u6811<\/code>\u548cB\u7684\u53f3\u5b50\u6811<\/code>\u662f\u5426\u76f8\u540c
\n5. 234\u4e09\u6761\u90fd\u76f8\u540c\u8fd4\u56de\u771f\uff0c\u5426\u5219\u8fd4\u56de\u5047<\/p>\n

C++<\/h3>\n
\/*\nstruct TreeNode {\n    int val;\n    struct TreeNode *left;\n    struct TreeNode *right;\n    TreeNode(int x) :\n            val(x), left(NULL), right(NULL) {\n    }\n};*\/\nclass Solution\n{\npublic:\n    bool HasSubtree(TreeNode *pRoot1, TreeNode *pRoot2)\n    {\n        if (!pRoot2 || !pRoot1)\n            return false;\n        \/\/\u524d\u5e8f\u904d\u5386\n        return dfs(pRoot1, pRoot2) || HasSubtree(pRoot1->left, pRoot2) || HasSubtree(pRoot1->right, pRoot2);\n    }\n\n    bool dfs(TreeNode *pRoot1, TreeNode *pRoot2)\n    {\n        if (!pRoot2)\n            return true;\n        if (!pRoot1)\n            return false;\n        return pRoot1->val == pRoot2->val && dfs(pRoot1->left, pRoot2->left) && dfs(pRoot1->right, pRoot2->right);\n    }\n};\n<\/code><\/pre>\n
Java<\/h3>\n
\/**\npublic class TreeNode {\n    int val = 0;\n    TreeNode left = null;\n    TreeNode right = null;\n\n    public TreeNode(int val) {\n        this.val = val;\n\n    }\n\n}\n*\/\npublic class Solution {\n    public boolean HasSubtree(TreeNode root1, TreeNode root2) {\n        if (root1 == null || root2 == null)\n            return false;\n        return dfs(root1, root2) || HasSubtree(root1.left, root2) || HasSubtree(root1.right, root2);\n    }\n\n    private boolean dfs(TreeNode root1, TreeNode root2) {\n        if (root2 == null)\n            return true;\n        if (root1 == null)\n            return false;\n        return root1.val == root2.val && dfs(root1.left, root2.left) && dfs(root1.right, root2.right);\n    }\n}\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"
\u9898\u76ee\u63cf\u8ff0 \u8f93\u5165\u4e24\u68f5\u4e8c\u53c9\u6811A\uff0cB\uff0c\u5224\u65adB\u662f\u4e0d\u662fA\u7684\u5b50\u7ed3\u6784\u3002\uff08ps\uff1a\u6211\u4eec\u7ea6\u5b9a\u7a7a\u6811\u4e0d\u662f\u4efb\u610f\u4e00\u4e2a\u6811\u7684\u5b50\u7ed3\u6784\uff09 \u9898\u76ee\u5206\u6790 […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5],"tags":[39],"class_list":["post-717","post","type-post","status-publish","format-standard","hentry","category-algo","tag-offer"],"_links":{"self":[{"href":"https:\/\/www.guanhaobo.cn\/index.php?rest_route=\/wp\/v2\/posts\/717","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.guanhaobo.cn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.guanhaobo.cn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.guanhaobo.cn\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.guanhaobo.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=717"}],"version-history":[{"count":0,"href":"https:\/\/www.guanhaobo.cn\/index.php?rest_route=\/wp\/v2\/posts\/717\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.guanhaobo.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=717"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.guanhaobo.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=717"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.guanhaobo.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=717"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}