{"provider_name":"Hatena Blog","published":"2020-02-18 16:41:02","title":"# LeetCode Hard 145. Binary Tree Postorder Traversal","version":"1.0","blog_title":"Neunomizu\u306e\u65e5\u8a18","categories":["leetcode"],"image_url":"https://i.imgur.com/BOl1ucs.png","height":"190","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fpropyon.hateblo.jp%2Fentry%2F2020%2F02%2F18%2F164102\" title=\"# LeetCode Hard 145. Binary Tree Postorder Traversal - Neunomizu\u306e\u65e5\u8a18\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","blog_url":"https://propyon.hateblo.jp/","url":"https://propyon.hateblo.jp/entry/2020/02/18/164102","width":"100%","description":"tags: leetcode \u98a8\u90aa\u306f\u6cbb\u3063\u305f\u3051\u3069\uff0c\u82b1\u7c89\u75c7\u304c\u30ad\u30c4\u30a4\uff0e \u6b21\u306e\u7dcf\u7406\u5927\u81e3\u306f\u82b1\u7c89\u75c7\u3092\u64b2\u6ec5\u3057\u3066\u307b\u3057\u3044\uff0e \u554f\u984c Explore Problems \u30a2\u30a4\u30c7\u30a2 \u6728\u3092\u63a2\u7d22\u3059\u308b\u969b\u306e\u9806\u5e8f\u3068\u3057\u3066\u4ee5\u4e0b\u306e\u56f3\u3088\u3046\u306b Inorder(\u5de6\u2192\u6839\u2192\u53f3) Preorder(\u6839\u2192\u5de6\u2192\u53f3) Postorder(\u5de6\u2192\u53f3\u2192\u6839) \u304c\u3042\u308a\u307e\u3059 \u30ce\u30fc\u30c9\u304c5\u3064\u306e\u6728\u306e\u5834\u5408\u3092\u56f3\u793a\u3059\u308b\u3068\u4ee5\u4e0b\u306e\u901a\u308a\u3067\u3059 \u89e3\u6cd51(recursive) Inorder\u3068Preorder\u3068\u540c\u3058\u8981\u9818\u3067\u3084\u308b\u3060\u3051\u3067\u3059\uff0e Postorder\u306f\u5de6\uff0c\u53f3\uff0c\u6839\u306e\u9806\u756a\u306b\u7b54\u3048\u306e\u914d\u5217\u306b\u683c\u7d0d\u3057\u307e\u3059\uff0e \u8a08\u7b97\u91cf \u30ce\u30fc\u30c9\u306e\u6570\u3092$N$\u3068\u3057\u307e\u3059\uff0e \u6642\u9593\u8a08\u7b97\u91cf $O(N)$ \u7a7a\u9593\u8a08\u7b97\u91cf \u518d\u5e30\u306e\u6df1\u3055\u3092\u8003\u2026","type":"rich","author_name":"sosodemonai","provider_url":"https://hatena.blog","author_url":"https://blog.hatena.ne.jp/sosodemonai/"}