{"id":453,"date":"2020-09-26T10:43:27","date_gmt":"2020-09-26T02:43:27","guid":{"rendered":"http:\/\/39.96.58.60\/?p=453"},"modified":"2022-10-18T16:39:14","modified_gmt":"2022-10-18T08:39:14","slug":"leetcode-701-%e4%ba%8c%e5%8f%89%e6%90%9c%e7%b4%a2%e6%a0%91%e4%b8%ad%e7%9a%84%e6%8f%92%e5%85%a5%e6%93%8d%e4%bd%9c","status":"publish","type":"post","link":"http:\/\/www.yatenglg.cn\/blog\/?p=453","title":{"rendered":"Leetcode 701. \u4e8c\u53c9\u641c\u7d22\u6811\u4e2d\u7684\u63d2\u5165\u64cd\u4f5c"},"content":{"rendered":"<p>\u7ed9\u5b9a\u4e8c\u53c9\u641c\u7d22\u6811\uff08BST\uff09\u7684\u6839\u8282\u70b9\u548c\u8981\u63d2\u5165\u6811\u4e2d\u7684\u503c\uff0c\u5c06\u503c\u63d2\u5165\u4e8c\u53c9\u641c\u7d22\u6811\u3002 \u8fd4\u56de\u63d2\u5165\u540e\u4e8c\u53c9\u641c\u7d22\u6811\u7684\u6839\u8282\u70b9\u3002 \u8f93\u5165\u6570\u636e\u4fdd\u8bc1\uff0c\u65b0\u503c\u548c\u539f\u59cb\u4e8c\u53c9\u641c\u7d22\u6811\u4e2d\u7684\u4efb\u610f\u8282\u70b9\u503c\u90fd\u4e0d\u540c\u3002<\/p>\n<p>\u6ce8\u610f\uff0c\u53ef\u80fd\u5b58\u5728\u591a\u79cd\u6709\u6548\u7684\u63d2\u5165\u65b9\u5f0f\uff0c\u53ea\u8981\u6811\u5728\u63d2\u5165\u540e\u4ecd\u4fdd\u6301\u4e3a\u4e8c\u53c9\u641c\u7d22\u6811\u5373\u53ef\u3002 \u4f60\u53ef\u4ee5\u8fd4\u56de\u4efb\u610f\u6709\u6548\u7684\u7ed3\u679c\u3002<\/p>\n<p>&nbsp;<\/p>\n<p>\u4f8b\u5982,&nbsp;<\/p>\n<pre>\u7ed9\u5b9a\u4e8c\u53c9\u641c\u7d22\u6811:\n\n\n\n        4\n\n       \/ \\\n\n      2   7\n\n     \/ \\\n\n    1   3\n\n\n\n\u548c \u63d2\u5165\u7684\u503c: 5\n\n<\/pre>\n<p>\u4f60\u53ef\u4ee5\u8fd4\u56de\u8fd9\u4e2a\u4e8c\u53c9\u641c\u7d22\u6811:<\/p>\n<pre>         4\n\n       \/   \\\n\n      2     7\n\n     \/ \\   \/\n\n    1   3 5\n\n<\/pre>\n<p>\u6216\u8005\u8fd9\u4e2a\u6811\u4e5f\u662f\u6709\u6548\u7684:<\/p>\n<pre>         5\n\n       \/   \\\n\n      2     7\n\n     \/ \\   \n\n    1   3\n\n         \\\n\n          4\n\n<\/pre>\n<p>&nbsp;<\/p>\n<p><strong>\u63d0\u793a\uff1a<\/strong><\/p>\n<ul>\n<li>\u7ed9\u5b9a\u7684\u6811\u4e0a\u7684\u8282\u70b9\u6570\u4ecb\u4e8e <code>0<\/code> \u548c <code>10^4<\/code> \u4e4b\u95f4<\/li>\n<li>\u6bcf\u4e2a\u8282\u70b9\u90fd\u6709\u4e00\u4e2a\u552f\u4e00\u6574\u6570\u503c\uff0c\u53d6\u503c\u8303\u56f4\u4ece <code>0<\/code> \u5230 <code>10^8<\/code><\/li>\n<li><code>-10^8 &lt;= val &lt;= 10^8<\/code><\/li>\n<li>\u65b0\u503c\u548c\u539f\u59cb\u4e8c\u53c9\u641c\u7d22\u6811\u4e2d\u7684\u4efb\u610f\u8282\u70b9\u503c\u90fd\u4e0d\u540c<\/li>\n<\/ul>\n<p>**\u96be\u5ea6**: Medium<\/p>\n<p>**\u6807\u7b7e**: \u6811\u3001<\/p>\n<div class=\"hcb_wrap\">\n<pre class=\"prism undefined-numbers lang-python\" data-lang=\"Python\"><code>\n# -*- coding: utf-8 -*-\n# @Author  : LG\n\n\"\"\"\n\u6267\u884c\u7528\u65f6\uff1a164 ms, \u5728\u6240\u6709 Python3 \u63d0\u4ea4\u4e2d\u51fb\u8d25\u4e8673.44% \u7684\u7528\u6237\n\u5185\u5b58\u6d88\u8017\uff1a15.5 MB, \u5728\u6240\u6709 Python3 \u63d0\u4ea4\u4e2d\u51fb\u8d25\u4e8681.96% \u7684\u7528\u6237\n\n\u89e3\u9898\u601d\u8def\uff1a\n    \u5728\u53f6\u8282\u70b9\u63d2\u5165\u63d2\u5165\u70b9\n\"\"\"\nclass Solution:\n    def insertIntoBST(self, root: TreeNode, val: int) -&gt; TreeNode:\n        insert_node = TreeNode(val) # \u5f85\u63d2\u5165\u7684\u8282\u70b9\n        def find(root):\n            if root.val &lt; val:  # \u5982\u679c\u5f53\u524d\u8282\u70b9\u503c\u5c0f\u4e8e\u63d2\u5165\u503c\uff0c\u904d\u5386\u53f3\u5b50\u6811\n                if root.right:  # \u5982\u679c\u53f3\u5b50\u6811\u5b58\u5728\uff0c\u904d\u5386\u53f3\u5b50\u6811\n                    find(root.right)\n                else:   # \u5982\u679c\u4e0d\u5b58\u5728\u53f3\u5b50\u6811\uff0c\u5f53\u524d\u8282\u70b9\u53f3\u8282\u70b9\u4e3a\u63d2\u5165\u8282\u70b9\n                    root.right = insert_node\n            else:   # \u5de6\u5b50\u6811\u540c\u5904\u7406\n                if root.left:\n                    find(root.left)\n                else:\n                    root.left = insert_node\n        if root:    # \u5982\u679c\u6811\u4e0d\u4e3a\u7a7a\uff0c \u5f00\u59cb\u904d\u5386\uff0c\u63d2\u5165\u63d2\u5165\u8282\u70b9\u70b9\n            find(root)\n            return root\n        else:   # \u5982\u679c\u5f53\u524d\u6811\u4e3a\u7a7a\uff0c\u5219\u76f4\u63a5\u8fd4\u56de\u5f85\u63d2\u5165\u8282\u70b9\n            return insert_node<\/code><\/pre>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>\u7ed9\u5b9a\u4e8c\u53c9\u641c\u7d22\u6811\uff08BST\uff09\u7684\u6839\u8282\u70b9\u548c\u8981\u63d2\u5165\u6811\u4e2d\u7684\u503c\uff0c\u5c06\u503c\u63d2\u5165\u4e8c\u53c9\u641c\u7d22\u6811\u3002 \u8fd4\u56de\u63d2\u5165\u540e\u4e8c\u53c9\u641c\u7d22\u6811\u7684\u6839\u8282\u70b9\u3002 \u8f93\u5165\u6570&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":[],"categories":[11,1],"tags":[],"_links":{"self":[{"href":"http:\/\/www.yatenglg.cn\/blog\/index.php?rest_route=\/wp\/v2\/posts\/453"}],"collection":[{"href":"http:\/\/www.yatenglg.cn\/blog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.yatenglg.cn\/blog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.yatenglg.cn\/blog\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.yatenglg.cn\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=453"}],"version-history":[{"count":1,"href":"http:\/\/www.yatenglg.cn\/blog\/index.php?rest_route=\/wp\/v2\/posts\/453\/revisions"}],"predecessor-version":[{"id":454,"href":"http:\/\/www.yatenglg.cn\/blog\/index.php?rest_route=\/wp\/v2\/posts\/453\/revisions\/454"}],"wp:attachment":[{"href":"http:\/\/www.yatenglg.cn\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=453"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.yatenglg.cn\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=453"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.yatenglg.cn\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=453"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}