{"id":335,"date":"2020-09-26T10:27:42","date_gmt":"2020-09-26T02:27:42","guid":{"rendered":"http:\/\/39.96.58.60\/?p=335"},"modified":"2022-10-18T16:39:50","modified_gmt":"2022-10-18T08:39:50","slug":"leetcode-257-%e4%ba%8c%e5%8f%89%e6%a0%91%e7%9a%84%e6%89%80%e6%9c%89%e8%b7%af%e5%be%84","status":"publish","type":"post","link":"http:\/\/www.yatenglg.cn\/blog\/?p=335","title":{"rendered":"Leetcode 257. \u4e8c\u53c9\u6811\u7684\u6240\u6709\u8def\u5f84"},"content":{"rendered":"<p>\u7ed9\u5b9a\u4e00\u4e2a\u4e8c\u53c9\u6811\uff0c\u8fd4\u56de\u6240\u6709\u4ece\u6839\u8282\u70b9\u5230\u53f6\u5b50\u8282\u70b9\u7684\u8def\u5f84\u3002<\/p>\n<p><strong>\u8bf4\u660e:<\/strong>&nbsp;\u53f6\u5b50\u8282\u70b9\u662f\u6307\u6ca1\u6709\u5b50\u8282\u70b9\u7684\u8282\u70b9\u3002<\/p>\n<p><strong>\u793a\u4f8b:<\/strong><\/p>\n<pre><strong>\u8f93\u5165:<\/strong>\n\n\n\n   1\n\n \/   \\\n\n2     3\n\n \\\n\n  5\n\n\n\n<strong>\u8f93\u51fa:<\/strong> [\"1-&gt;2-&gt;5\", \"1-&gt;3\"]\n\n\n\n<strong>\u89e3\u91ca:<\/strong> \u6240\u6709\u6839\u8282\u70b9\u5230\u53f6\u5b50\u8282\u70b9\u7684\u8def\u5f84\u4e3a: 1-&gt;2-&gt;5, 1-&gt;3<\/pre>\n<p>**\u96be\u5ea6**: Easy<\/p>\n<p>**\u6807\u7b7e**: \u6811\u3001 \u6df1\u5ea6\u4f18\u5148\u641c\u7d22\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\uff1a28 ms, \u5728\u6240\u6709 Python3 \u63d0\u4ea4\u4e2d\u51fb\u8d25\u4e8699.78% \u7684\u7528\u6237\n\u5185\u5b58\u6d88\u8017\uff1a13.9 MB, \u5728\u6240\u6709 Python3 \u63d0\u4ea4\u4e2d\u51fb\u8d25\u4e865.78% \u7684\u7528\u6237\n\n\u89e3\u9898\u601d\u8def\uff1a\n    \u56de\u6eaf\n\"\"\"\n\n\n# 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 binaryTreePaths(self, root: TreeNode) -&gt; List[str]:\n        result = []\n\n        def find(root, current: list):\n            if root == None:    # \u5982\u679c\u5f53\u524d\u8282\u70b9\u662fnone\uff0c\u5219\u7ec8\u6b62\n                return\n\n            current.append(root.val)    # \u4e0d\u662fnone\uff0c\u5c06\u5f53\u524d\u8282\u70b9\u6dfb\u52a0\u5230\u5f53\u524d\u5217\u8868\u4e2d\n\n            if root.left == None and root.right == None:    # \u5f53\u524d\u8282\u70b9\u662f\u53f6\u8282\u70b9\u65f6\uff0c\u5c06\u5f53\u524d\u5217\u8868\u6dfb\u52a0\u5230\u6700\u7ec8\u7ed3\u679c\u4e2d\n                result.append('-&gt;'.join([str(n) for n in current]))\n\n            find(root.left, current)    # \u904d\u5386\u5de6\u5b50\u6811\n            find(root.right, current)   # \u904d\u5386\u53f3\u5b50\u6811\n            current.pop()               # \u56de\u6eaf\n\n        find(root, [])\n        return result<\/code><\/pre>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>\u7ed9\u5b9a\u4e00\u4e2a\u4e8c\u53c9\u6811\uff0c\u8fd4\u56de\u6240\u6709\u4ece\u6839\u8282\u70b9\u5230\u53f6\u5b50\u8282\u70b9\u7684\u8def\u5f84\u3002 \u8bf4\u660e:&nbsp;\u53f6\u5b50\u8282\u70b9\u662f\u6307\u6ca1\u6709\u5b50\u8282\u70b9\u7684\u8282\u70b9\u3002 \u793a\u4f8b: &#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","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\/335"}],"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=335"}],"version-history":[{"count":1,"href":"http:\/\/www.yatenglg.cn\/blog\/index.php?rest_route=\/wp\/v2\/posts\/335\/revisions"}],"predecessor-version":[{"id":336,"href":"http:\/\/www.yatenglg.cn\/blog\/index.php?rest_route=\/wp\/v2\/posts\/335\/revisions\/336"}],"wp:attachment":[{"href":"http:\/\/www.yatenglg.cn\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=335"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.yatenglg.cn\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=335"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.yatenglg.cn\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=335"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}