{"id":545,"date":"2020-09-26T10:54:14","date_gmt":"2020-09-26T02:54:14","guid":{"rendered":"http:\/\/39.96.58.60\/?p=545"},"modified":"2022-10-18T16:38:54","modified_gmt":"2022-10-18T08:38:54","slug":"leetcode-530-%e4%ba%8c%e5%8f%89%e6%90%9c%e7%b4%a2%e6%a0%91%e7%9a%84%e6%9c%80%e5%b0%8f%e7%bb%9d%e5%af%b9%e5%b7%ae","status":"publish","type":"post","link":"http:\/\/www.yatenglg.cn\/blog\/?p=545","title":{"rendered":"Leetcode 530. \u4e8c\u53c9\u641c\u7d22\u6811\u7684\u6700\u5c0f\u7edd\u5bf9\u5dee"},"content":{"rendered":"<p>\u7ed9\u4f60\u4e00\u68f5\u6240\u6709\u8282\u70b9\u4e3a\u975e\u8d1f\u503c\u7684\u4e8c\u53c9\u641c\u7d22\u6811\uff0c\u8bf7\u4f60\u8ba1\u7b97\u6811\u4e2d\u4efb\u610f\u4e24\u8282\u70b9\u7684\u5dee\u7684\u7edd\u5bf9\u503c\u7684\u6700\u5c0f\u503c\u3002<\/p>\n<p>&nbsp;<\/p>\n<p><strong>\u793a\u4f8b\uff1a<\/strong><\/p>\n<pre><strong>\u8f93\u5165\uff1a<\/strong>\n\n\n\n   1\n\n    \\\n\n     3\n\n    \/\n\n   2\n\n\n\n<strong>\u8f93\u51fa\uff1a<\/strong>\n\n1\n\n\n\n<strong>\u89e3\u91ca\uff1a\n\n<\/strong>\u6700\u5c0f\u7edd\u5bf9\u5dee\u4e3a 1\uff0c\u5176\u4e2d 2 \u548c 1 \u7684\u5dee\u7684\u7edd\u5bf9\u503c\u4e3a 1\uff08\u6216\u8005 2 \u548c 3\uff09\u3002\n\n<\/pre>\n<p>&nbsp;<\/p>\n<p><strong>\u63d0\u793a\uff1a<\/strong><\/p>\n<ul>\n<li>\u6811\u4e2d\u81f3\u5c11\u6709 2 \u4e2a\u8282\u70b9\u3002<\/li>\n<li>\u672c\u9898\u4e0e 783 <a href=\"https:\/\/leetcode-cn.com\/problems\/minimum-distance-between-bst-nodes\/\">https:\/\/leetcode-cn.com\/problems\/minimum-distance-between-bst-nodes\/<\/a> \u76f8\u540c<\/li>\n<\/ul>\n<p>**\u96be\u5ea6**: Easy<\/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\uff1a60 ms, \u5728\u6240\u6709 Python3 \u63d0\u4ea4\u4e2d\u51fb\u8d25\u4e8695.72% \u7684\u7528\u6237\n\u5185\u5b58\u6d88\u8017\uff1a15.4 MB, \u5728\u6240\u6709 Python3 \u63d0\u4ea4\u4e2d\u51fb\u8d25\u4e8644.12% \u7684\u7528\u6237\n\n\u89e3\u9898\u601d\u8def\uff1a\n    \u4e2d\u5e8f\u904d\u5386\n\"\"\"\nclass Solution:\n    def getMinimumDifference(self, root: TreeNode) -&gt; int:\n        self.result = self.val = float('inf')   # \u8bb0\u5f55\u6700\u7ec8\u7ed3\u679c\uff0c\u4ee5\u53ca\u5f53\u524d\u8282\u70b9\u503c\n        def find(root):\n            if root:\n                l = find(root.left)     # \u5148\u904d\u5386\u5de6\u5b50\u6811\n                if l:\n                    self.result = min(abs(self.val-l.val), self.result) # \u5224\u65ad\u8282\u70b9\u5dee\u503c\u7edd\u5bf9\u503c\uff0c\u66f4\u65b0\u6700\u5c0f\u503c\n                    self.val = l.val\n\n                self.result = min(abs(self.val - root.val), self.result)    # \u6839\u8282\u70b9\n                self.val = root.val\n\n                r = find(root.right)    # \u53f3\u5b50\u6811\n                if r:\n                    self.result = min(abs(self.val - r.val), self.result)\n                    self.val = r.val\n\n        find(root)\n        return int(self.result)<\/code><\/pre>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>\u7ed9\u4f60\u4e00\u68f5\u6240\u6709\u8282\u70b9\u4e3a\u975e\u8d1f\u503c\u7684\u4e8c\u53c9\u641c\u7d22\u6811\uff0c\u8bf7\u4f60\u8ba1\u7b97\u6811\u4e2d\u4efb\u610f\u4e24\u8282\u70b9\u7684\u5dee\u7684\u7edd\u5bf9\u503c\u7684\u6700\u5c0f\u503c\u3002 &nbsp; \u793a\u4f8b\uff1a \u8f93\u5165&#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\/545"}],"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=545"}],"version-history":[{"count":1,"href":"http:\/\/www.yatenglg.cn\/blog\/index.php?rest_route=\/wp\/v2\/posts\/545\/revisions"}],"predecessor-version":[{"id":546,"href":"http:\/\/www.yatenglg.cn\/blog\/index.php?rest_route=\/wp\/v2\/posts\/545\/revisions\/546"}],"wp:attachment":[{"href":"http:\/\/www.yatenglg.cn\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=545"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.yatenglg.cn\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=545"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.yatenglg.cn\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=545"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}