{"id":2538,"date":"2022-02-02T16:43:25","date_gmt":"2022-02-02T08:43:25","guid":{"rendered":"http:\/\/139.9.1.231\/?p=2538"},"modified":"2022-02-02T16:43:26","modified_gmt":"2022-02-02T08:43:26","slug":"leetcodeday226","status":"publish","type":"post","link":"http:\/\/139.9.1.231\/index.php\/2022\/02\/02\/leetcodeday226\/","title":{"rendered":"leetcodeday226&#8211;\u7ffb\u8f6c\u4e8c\u53c9\u6811"},"content":{"rendered":"\n<p>\u7ed9\u4f60\u4e00\u68f5\u4e8c\u53c9\u6811\u7684\u6839\u8282\u70b9&nbsp;<code>root<\/code>&nbsp;\uff0c\u7ffb\u8f6c\u8fd9\u68f5\u4e8c\u53c9\u6811\uff0c\u5e76\u8fd4\u56de\u5176\u6839\u8282\u70b9\u3002<\/p>\n\n\n\n<p><strong>\u793a\u4f8b 1\uff1a<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-image is-style-default\"><img src=\"https:\/\/assets.leetcode.com\/uploads\/2021\/03\/14\/invert1-tree.jpg\" alt=\"\"\/><\/figure>\n\n\n\n<pre class=\"wp-block-code\"><code><strong>\u8f93\u5165\uff1a<\/strong>root = &#91;4,2,7,1,3,6,9]\n<strong>\u8f93\u51fa\uff1a<\/strong>&#91;4,7,2,9,6,3,1]<\/code><\/pre>\n\n\n\n<pre class=\"wp-block-code\"><code># &#91;226] \u7ffb\u8f6c\u4e8c\u53c9\u6811\r\n#\r\n\r\n# @lc code=start\r\n# Definition for a binary tree node.\r\n# class TreeNode:\r\n#     def __init__(self, val=0, left=None, right=None):\r\n#         self.val = val\r\n#         self.left = left\r\n#         self.right = right\r\nclass Solution:\r\n    def invertTree(self, root: TreeNode) -> TreeNode:\r\n        \r\n        def traversal(root: TreeNode):\r\n            if root == None:\r\n                return\r\n            rev=root.left\r\n            root.left=root.right\r\n            root.right=rev\r\n            traversal(root.left)    # \u5de6\r\n            traversal(root.right)   # \u53f3\r\n\r\n        traversal(root)\r\n        return root\r\n# @lc code=end<\/code><\/pre>\n\n\n\n<figure class=\"wp-block-image size-full is-style-default\"><img loading=\"lazy\" width=\"793\" height=\"254\" src=\"http:\/\/139.9.1.231\/wp-content\/uploads\/2022\/02\/image-12.png\" alt=\"\" class=\"wp-image-2539\" srcset=\"http:\/\/139.9.1.231\/wp-content\/uploads\/2022\/02\/image-12.png 793w, http:\/\/139.9.1.231\/wp-content\/uploads\/2022\/02\/image-12-300x96.png 300w, http:\/\/139.9.1.231\/wp-content\/uploads\/2022\/02\/image-12-768x246.png 768w\" sizes=\"(max-width: 793px) 100vw, 793px\" \/><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>\u7ed9\u4f60\u4e00\u68f5\u4e8c\u53c9\u6811\u7684\u6839\u8282\u70b9&nbsp;root&nbsp;\uff0c\u7ffb\u8f6c\u8fd9\u68f5\u4e8c\u53c9\u6811\uff0c\u5e76\u8fd4\u56de\u5176\u6839\u8282\u70b9\u3002 \u793a\u4f8b 1\uff1a<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[6],"tags":[],"_links":{"self":[{"href":"http:\/\/139.9.1.231\/index.php\/wp-json\/wp\/v2\/posts\/2538"}],"collection":[{"href":"http:\/\/139.9.1.231\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/139.9.1.231\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/139.9.1.231\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/139.9.1.231\/index.php\/wp-json\/wp\/v2\/comments?post=2538"}],"version-history":[{"count":1,"href":"http:\/\/139.9.1.231\/index.php\/wp-json\/wp\/v2\/posts\/2538\/revisions"}],"predecessor-version":[{"id":2540,"href":"http:\/\/139.9.1.231\/index.php\/wp-json\/wp\/v2\/posts\/2538\/revisions\/2540"}],"wp:attachment":[{"href":"http:\/\/139.9.1.231\/index.php\/wp-json\/wp\/v2\/media?parent=2538"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/139.9.1.231\/index.php\/wp-json\/wp\/v2\/categories?post=2538"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/139.9.1.231\/index.php\/wp-json\/wp\/v2\/tags?post=2538"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}