{"id":450,"date":"2026-02-23T00:08:47","date_gmt":"2026-02-22T16:08:47","guid":{"rendered":"https:\/\/jdoxk3.cn\/?p=450"},"modified":"2026-02-23T00:08:47","modified_gmt":"2026-02-22T16:08:47","slug":"%e4%bb%a3%e7%a0%81%e9%9a%8f%e6%83%b3%e5%bd%95%e7%ae%97%e6%b3%95%e8%ae%ad%e7%bb%83%e8%90%a5%e7%ac%ac%e5%8d%81%e5%85%ab%e5%a4%a9-530-%e4%ba%8c%e5%8f%89%e6%90%9c%e7%b4%a2%e6%a0%91%e7%9a%84%e6%9c%80","status":"publish","type":"post","link":"https:\/\/jdoxk3.cn\/index.php\/2026\/02\/23\/%e4%bb%a3%e7%a0%81%e9%9a%8f%e6%83%b3%e5%bd%95%e7%ae%97%e6%b3%95%e8%ae%ad%e7%bb%83%e8%90%a5%e7%ac%ac%e5%8d%81%e5%85%ab%e5%a4%a9-530-%e4%ba%8c%e5%8f%89%e6%90%9c%e7%b4%a2%e6%a0%91%e7%9a%84%e6%9c%80\/","title":{"rendered":"\u4ee3\u7801\u968f\u60f3\u5f55\u7b97\u6cd5\u8bad\u7ec3\u8425\u7b2c\u5341\u516b\u5929 | 530.\u4e8c\u53c9\u641c\u7d22\u6811\u7684\u6700\u5c0f\u7edd\u5bf9\u5dee\uff0c501.\u4e8c\u53c9\u641c\u7d22\u6811\u4e2d\u7684\u4f17\u6570\uff0c236.\u4e8c\u53c9\u6811\u7684\u6700\u8fd1\u516c\u5171\u7956\u5148"},"content":{"rendered":"\n<h1 class=\"wp-block-heading\">\u524d\u8a00<\/h1>\n\n\n\n<p>\u4eca\u5929\u662f\u7b97\u6cd5\u8bad\u7ec3\u8425\u7684\u7b2c\u5341\u516b\u5929\uff08\u5e76\u4e0d\u662f\uff09\uff0c\u672c\u6587\u7684\u64b0\u5199\u65f6\u95f4\u5b9e\u9645\u4e0a\u5df2\u7ecf\u662f\u5bf9\u4e8e\u8bad\u7ec3\u8425\u7b2c\u4e09\u5341\u56db\u5929\u4e86\uff0c\u7531\u4e8e\u5bd2\u5047\u65f6\u95f4\u592a\u957f\uff0c\u60f0\u6027\u96be\u4ee5\u907f\u514d\u5730\u653e\u5927\u5230\u4e86\u6700\u5927\u5316\u3002<\/p>\n\n\n\n<p>\u5e9f\u8bdd\u4e0d\u591a\u8bf4\uff0c\u603b\u4e4b\u8fd8\u662f\u5e0c\u671b\u5728\u5f00\u5b66\u524d\u80fd\u628a\u6587\u6863\u8fdb\u5ea6\u8ffd\u56de\u6765\u5427&#8230;..<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">530.\u4e8c\u53c9\u641c\u7d22\u6811\u7684\u6700\u5c0f\u7edd\u5bf9\u5dee<\/h1>\n\n\n\n<p>\u9898\u76ee\u94fe\u63a5\uff1a<a href=\"https:\/\/leetcode.cn\/problems\/minimum-absolute-difference-in-bst\/\">530. \u4e8c\u53c9\u641c\u7d22\u6811\u7684\u6700\u5c0f\u7edd\u5bf9\u5dee<\/a><\/p>\n\n\n\n<p>\u9898\u76ee\u63cf\u8ff0\uff1a<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u7ed9\u4f60\u4e00\u4e2a\u4e8c\u53c9\u641c\u7d22\u6811\u7684\u6839\u8282\u70b9 <code>root<\/code> \uff0c\u8fd4\u56de <strong>\u6811\u4e2d\u4efb\u610f\u4e24\u4e0d\u540c\u8282\u70b9\u503c\u4e4b\u95f4\u7684\u6700\u5c0f\u5dee\u503c<\/strong> \u3002<\/p>\n\n\n\n<p>\u5dee\u503c\u662f\u4e00\u4e2a\u6b63\u6570\uff0c\u5176\u6570\u503c\u7b49\u4e8e\u4e24\u503c\u4e4b\u5dee\u7684\u7edd\u5bf9\u503c\u3002<\/p>\n<\/blockquote>\n\n\n\n<h2 class=\"wp-block-heading\">\u601d\u8def<\/h2>\n\n\n\n<p>\u8fd9\u9053\u9898\u6211\u7684\u601d\u8def\u6bd4\u8f83\u7b80\u5355\uff0c\u4f7f\u7528\u5c42\u5e8f\u904d\u5386\u5c06\u4e8c\u53c9\u6811\u6240\u6709\u8282\u70b9\u4fdd\u5b58\u4e0b\u6765\uff0c\u6700\u540e\u5c06\u4fdd\u5b58\u4e0b\u6765\u7684\u6570\u503c\u6392\u5e8f\u904d\u5386\u627e\u5230\u6700\u5c0f\u5dee\u503c\u3002\uff08\u56de\u5934\u770b\u8fd9\u6837\u505a\u6709\u70b9\u7b28\uff0c\u660e\u660e\u5bf9\u4e8c\u53c9\u641c\u7d22\u6811\u4e2d\u5e8f\u904d\u5386\u76f4\u63a5\u5c31\u662f\u5f97\u5230\u4e00\u4e2a\u6709\u5e8f\u7684\u6570\u7ec4\uff09<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u5b8c\u6574\u5b9e\u73b0\u4ee3\u7801<\/h2>\n\n\n\n<pre class=\"wp-block-code\"><code># Definition for a binary tree node.\n# class TreeNode:\n#     def __init__(self, val=0, left=None, right=None):\n#         self.val = val\n#         self.left = left\n#         self.right = right\nclass Solution:\n    def getMinimumDifference(self, root: Optional&#91;TreeNode]) -> int:\n        if not root:\n            return\n        queue = collections.deque(&#91;root])\n        ans = inf\n        arr = &#91;]\n        while queue:\n            levelSize = len(queue)\n            for _ in range(levelSize):\n                node = queue.popleft()\n                arr.append(node.val)\n                if node.left:\n                    queue.append(node.left)\n                if node.right:\n                    queue.append(node.right)\n        \n        arr.sort()\n        for i in range(1, len(arr)):\n            ans = min(ans, abs(arr&#91;i] - arr&#91;i - 1]))\n        return ans<\/code><\/pre>\n\n\n\n<h1 class=\"wp-block-heading\">501.\u4e8c\u53c9\u641c\u7d22\u6811\u4e2d\u7684\u4f17\u6570<\/h1>\n\n\n\n<p>\u9898\u76ee\u94fe\u63a5\uff1a<a href=\"https:\/\/leetcode.cn\/problems\/find-mode-in-binary-search-tree\/\">501. \u4e8c\u53c9\u641c\u7d22\u6811\u4e2d\u7684\u4f17\u6570<\/a><\/p>\n\n\n\n<p>\u9898\u76ee\u63cf\u8ff0\uff1a<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u7ed9\u4f60\u4e00\u4e2a\u542b\u91cd\u590d\u503c\u7684\u4e8c\u53c9\u641c\u7d22\u6811\uff08BST\uff09\u7684\u6839\u8282\u70b9 <code>root<\/code> \uff0c\u627e\u51fa\u5e76\u8fd4\u56de BST \u4e2d\u7684\u6240\u6709 <a href=\"https:\/\/baike.baidu.com\/item\/%E4%BC%97%E6%95%B0\/44796\">\u4f17\u6570<\/a>\uff08\u5373\uff0c\u51fa\u73b0\u9891\u7387\u6700\u9ad8\u7684\u5143\u7d20\uff09\u3002<\/p>\n\n\n\n<p>\u5982\u679c\u6811\u4e2d\u6709\u4e0d\u6b62\u4e00\u4e2a\u4f17\u6570\uff0c\u53ef\u4ee5\u6309 <strong>\u4efb\u610f\u987a\u5e8f<\/strong> \u8fd4\u56de\u3002<\/p>\n\n\n\n<p>\u5047\u5b9a BST \u6ee1\u8db3\u5982\u4e0b\u5b9a\u4e49\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u7ed3\u70b9\u5de6\u5b50\u6811\u4e2d\u6240\u542b\u8282\u70b9\u7684\u503c <strong>\u5c0f\u4e8e\u7b49\u4e8e<\/strong> \u5f53\u524d\u8282\u70b9\u7684\u503c<\/li>\n\n\n\n<li>\u7ed3\u70b9\u53f3\u5b50\u6811\u4e2d\u6240\u542b\u8282\u70b9\u7684\u503c <strong>\u5927\u4e8e\u7b49\u4e8e<\/strong> \u5f53\u524d\u8282\u70b9\u7684\u503c<\/li>\n\n\n\n<li>\u5de6\u5b50\u6811\u548c\u53f3\u5b50\u6811\u90fd\u662f\u4e8c\u53c9\u641c\u7d22\u6811<\/li>\n<\/ul>\n<\/blockquote>\n\n\n\n<h2 class=\"wp-block-heading\">\u601d\u8def<\/h2>\n\n\n\n<p>\u9762\u5bf9\u8fd9\u79cd\u9700\u8981\u904d\u5386\u4e8c\u53c9\u6811\u4e2d\u6240\u6709\u5143\u7d20\u7684\u60c5\u51b5\uff0c\u4e4b\u524d\u5237\u9898\u7684\u65f6\u5019\u660e\u663e\u504f\u5411\u4f7f\u7528\u5c42\u5e8f\u904d\u5386\uff0c\u8fd9\u91cc\u7684\u505a\u6cd5\u4f9d\u65e7\u662f\u4f7f\u7528\u5c42\u5e8f\u904d\u5386\u5bf9\u6811\u7684\u8282\u70b9\u503c\u8fdb\u884c\u8bb0\u5f55\uff0c\u8bb0\u5f55\u7684\u540c\u65f6\u4f7f\u7528\u4e00\u4e2a\u5b57\u5178\u6765\u8bb0\u5f55\u6570\u91cf\uff0c\u6700\u540e\u8f93\u51fa\u6700\u5927\u6570\u91cf\u7684\u503c\u5373\u4e3a\u4f17\u6570\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u5b8c\u6574\u4ee3\u7801\u5b9e\u73b0<\/h2>\n\n\n\n<pre class=\"wp-block-code\"><code># Definition for a binary tree node.\n# class TreeNode:\n#     def __init__(self, val=0, left=None, right=None):\n#         self.val = val\n#         self.left = left\n#         self.right = right\nclass Solution:\n    def findMode(self, root: Optional&#91;TreeNode]) -> List&#91;int]:\n        if not root:\n            return \n            \n        queue = collections.deque(&#91;root])\n        map1 = {}\n        ans = &#91;]\n        while queue:\n            levelSize = len(queue)\n            for _ in range(levelSize):\n                node = queue.popleft()\n                map1&#91;node.val] = map1.get(node.val, 0) + 1\n                if node.left: queue.append(node.left)\n                if node.right: queue.append(node.right)\n        max1 = max(map1.values())\n        for idx, val in map1.items():\n            if val == max1:\n                ans.append(idx)\n        return ans<\/code><\/pre>\n\n\n\n<h1 class=\"wp-block-heading\">236.\u4e8c\u53c9\u6811\u7684\u6700\u8fd1\u516c\u5171\u7956\u5148<\/h1>\n\n\n\n<p>\u9898\u76ee\u94fe\u63a5\uff1a<a href=\"https:\/\/leetcode.cn\/problems\/lowest-common-ancestor-of-a-binary-tree\/\">236. \u4e8c\u53c9\u6811\u7684\u6700\u8fd1\u516c\u5171\u7956\u5148<\/a><\/p>\n\n\n\n<p>\u9898\u76ee\u63cf\u8ff0\uff1a<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u7ed9\u5b9a\u4e00\u4e2a\u4e8c\u53c9\u6811, \u627e\u5230\u8be5\u6811\u4e2d\u4e24\u4e2a\u6307\u5b9a\u8282\u70b9\u7684\u6700\u8fd1\u516c\u5171\u7956\u5148\u3002<\/p>\n\n\n\n<p><a href=\"https:\/\/baike.baidu.com\/item\/%E6%9C%80%E8%BF%91%E5%85%AC%E5%85%B1%E7%A5%96%E5%85%88\/8918834?fr=aladdin\">\u767e\u5ea6\u767e\u79d1<\/a>\u4e2d\u6700\u8fd1\u516c\u5171\u7956\u5148\u7684\u5b9a\u4e49\u4e3a\uff1a\u201c\u5bf9\u4e8e\u6709\u6839\u6811 T \u7684\u4e24\u4e2a\u8282\u70b9 p\u3001q\uff0c\u6700\u8fd1\u516c\u5171\u7956\u5148\u8868\u793a\u4e3a\u4e00\u4e2a\u8282\u70b9 x\uff0c\u6ee1\u8db3 x \u662f p\u3001q \u7684\u7956\u5148\u4e14 x \u7684\u6df1\u5ea6\u5c3d\u53ef\u80fd\u5927\uff08<strong>\u4e00\u4e2a\u8282\u70b9\u4e5f\u53ef\u4ee5\u662f\u5b83\u81ea\u5df1\u7684\u7956\u5148<\/strong>\uff09\u3002\u201d<\/p>\n<\/blockquote>\n\n\n\n<h2 class=\"wp-block-heading\">\u601d\u8def<\/h2>\n\n\n\n<p>\u8fd9\u9053\u9898\u5f53\u65f6\u505a\u7684\u65f6\u5019\u5c31\u89c9\u5f97\u6709\u70b9\u96be\u60f3\u5230\uff0c\u73b0\u5728\u518d\u770b\u4f9d\u65e7\u89c9\u5f97\u6709\u70b9\u62bd\u8c61\u3002<\/p>\n\n\n\n<p>\u6211\u4eec\u5728\u8fd9\u91cc\u9700\u8981\u4f7f\u7528\u5230\u4e00\u4e9b\u56de\u6eaf\u7684\u6280\u5de7\uff0c\u5904\u7406\u903b\u8f91\u5927\u81f4\u4e3a\uff1a\u5224\u65ad\u5de6\u5b50\u6811\u548c\u53f3\u5b50\u6811\u4e2d\u6709\u6ca1\u6709\u627e\u5230p\u6216q\uff0c\u5982\u679c\u5de6\u53f3\u5b50\u6811\u4e2d\u540c\u65f6\u627e\u5230\uff0c\u90a3\u4e48\u8bf4\u660e\u5f53\u524d\u8282\u70b9\u5c31\u662f\u6211\u4eec\u9700\u8981\u7684\u76ee\u6807\uff0c\u5411\u4e0a\u8fd4\u56de\u5373\u53ef\uff1b\u5982\u679c\u5de6\u5b50\u6811\u4e2d\u627e\u5230\uff0c\u90a3\u4e48\u8fd4\u56de\u5de6\u5b50\u6811\uff1b\u5982\u679c\u53f3\u5b50\u6811\u4e2d\u627e\u5230\uff0c\u8fd4\u56de\u53f3\u5b50\u6811\u3002\u4e00\u8d9f\u56de\u6eaf\u4e0b\u6765\uff0c\u7531\u4e8e\u662f\u81ea\u5e95\u5411\u4e0a\uff0c\u6240\u4ee5\u6211\u4eec\u4e0d\u5fc5\u62c5\u5fc3\u6700\u7ec8\u8fd4\u56de\u7684\u503c\u662f\u5426\u662f\u6700\u8fd1\u7684\u516c\u5171\u7956\u5148\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u6574\u4f53\u4ee3\u7801\u5b9e\u73b0<\/h2>\n\n\n\n<pre class=\"wp-block-code\"><code># Definition for a binary tree node.\n# class TreeNode:\n#     def __init__(self, x):\n#         self.val = x\n#         self.left = None\n#         self.right = None\n\nclass Solution:\n    def lowestCommonAncestor(self, root: 'TreeNode', p: 'TreeNode', q: 'TreeNode') -> 'TreeNode':\n        if root == p or root == q:\n            return root\n        if not root:\n            return root\n        left = self.lowestCommonAncestor(root.left, p, q)\n        right = self.lowestCommonAncestor(root.right, p, q)\n        if left != None and right != None:\n            return root\n        if left != None and right == None:\n            return left\n        elif left == None and right != None:\n            return right\n        else:\n            return None<\/code><\/pre>\n\n\n\n<h1 class=\"wp-block-heading\">\u603b\u7ed3<\/h1>\n\n\n\n<p>\u4eca\u5929\u524d\u9762\u4e24\u9898\u4e3b\u8981\u89e3\u51b3\u601d\u8def\u662f\u5bf9\u6574\u68f5\u6811\u8fdb\u884c\u904d\u5386\uff0c\u5e76\u628a\u6570\u503c\u91c7\u96c6\uff0c\u6700\u540e\u5bf9\u91c7\u96c6\u4e0b\u6765\u7684\u6570\u503c\u8fdb\u884c\u5224\u65ad\u5904\u7406\u3002\u6700\u540e\u4e00\u9053\u9898\u7565\u5fae\u4f7f\u7528\u5230\u4e86\u4e00\u70b9\u56de\u6eaf\u7684\u6280\u5de7\uff0c\u5199\u8fd9\u7bc7\u6587\u7ae0\u7684\u65f6\u5019\u5df2\u7ecf\u5b8c\u6574\u628a\u56de\u6eaf\u7bc7\u7ae0\u7684\u9898\u76ee\u5237\u5b8c\uff0c\u6240\u4ee5\u73b0\u5728\u518d\u770b\u7406\u89e3\u96be\u5ea6\u5176\u5b9e\u6ca1\u6709\u521d\u89c1\u90a3\u4e48\u9ad8\uff0c\u4f46\u662f\u4f9d\u65e7\u503c\u5f97\u4e0b\u4e00\u6b21\u7684\u6df1\u7a76\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u524d\u8a00 \u4eca\u5929\u662f\u7b97\u6cd5\u8bad\u7ec3\u8425\u7684\u7b2c\u5341\u516b\u5929\uff08\u5e76\u4e0d\u662f\uff09\uff0c\u672c\u6587\u7684\u64b0\u5199\u65f6\u95f4\u5b9e\u9645\u4e0a\u5df2\u7ecf\u662f\u5bf9\u4e8e\u8bad\u7ec3\u8425\u7b2c\u4e09\u5341\u56db\u5929\u4e86\uff0c\u7531\u4e8e\u5bd2\u5047\u65f6\u95f4\u592a\u957f [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[11],"tags":[13,15,14],"class_list":["post-450","post","type-post","status-publish","format-standard","hentry","category-python","tag-python","tag-15","tag-14"],"_links":{"self":[{"href":"https:\/\/jdoxk3.cn\/index.php\/wp-json\/wp\/v2\/posts\/450","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/jdoxk3.cn\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/jdoxk3.cn\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/jdoxk3.cn\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/jdoxk3.cn\/index.php\/wp-json\/wp\/v2\/comments?post=450"}],"version-history":[{"count":1,"href":"https:\/\/jdoxk3.cn\/index.php\/wp-json\/wp\/v2\/posts\/450\/revisions"}],"predecessor-version":[{"id":451,"href":"https:\/\/jdoxk3.cn\/index.php\/wp-json\/wp\/v2\/posts\/450\/revisions\/451"}],"wp:attachment":[{"href":"https:\/\/jdoxk3.cn\/index.php\/wp-json\/wp\/v2\/media?parent=450"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/jdoxk3.cn\/index.php\/wp-json\/wp\/v2\/categories?post=450"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/jdoxk3.cn\/index.php\/wp-json\/wp\/v2\/tags?post=450"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}