{"image_url":null,"blog_title":"sirocco \u306e\u66f8\u3044\u3066\u3082\u3059\u3050\u306b\u5fd8\u308c\u308b\u30e1\u30e2","provider_name":"Hatena Blog","version":"1.0","blog_url":"https://sirocco.hatenadiary.org/","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fsirocco.hatenadiary.org%2Fentry%2F20100103%2F1262474543\" title=\"\u5e38\u306b\u5b50\u3088\u308a\u3082\u89aa\u304c\u5927\u304d\u3044\uff08\u5c0f\u3055\u3044\uff09\u5024\u306e\u4e8c\u5206\u6728\u3092\u30d2\u30fc\u30d7\u3068\u3044\u3046\u3002 - sirocco \u306e\u66f8\u3044\u3066\u3082\u3059\u3050\u306b\u5fd8\u308c\u308b\u30e1\u30e2\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","description":"\u5e38\u306b\u5b50\u3088\u308a\u3082\u89aa\u304c\u5927\u304d\u3044\uff08\u5c0f\u3055\u3044\uff09\u5024\u306e\u4e8c\u5206\u6728\u3092\u30d2\u30fc\u30d7\u3068\u3044\u3046\u30022\u5206\u6728\u3092\u914d\u5217\u3067\u8868\u73fe\u3059\u308b\u3068\u5404\u8981\u7d20\u306e\u4f4d\u7f6e\u95a2\u4fc2\u306f n \u306e\u89aa\u306f n - 1 / 2 n \u306e\u5de6\u306e\u5b50\u306f 2 * n + 1 n \u306e\u53f3\u306e\u5b50\u306f 2 * (n + 1) \u3068\u306a\u308b\u3002 0 | +--+--+ 1 2 | | +-+-+ +-+-+ | | | | 3 4 5 6 [0,1,2,3,4,5,6] S\u5f0f\u3067\u8868\u73fe\u3059\u308b\u3068\u4ee5\u4e0b\u306b\u306a\u308b\u3002 (0 ;; 0 \u306b\u306f 1 \u3068 2 \u306e\u5b50\u304c\u3042\u308b\u3002 (1 (3 * *) (4 * *)) (2 (5 * *) (6 * *)))\u30d2\u30fc\u30d7\u306e\u6761\u4ef6\u3092\u6e80\u305f\u3057\u306a\u304c\u3089\u30c7\u30fc\u30bf\u3092\u8ffd\u52a0\u3057\u3066\u3044\u304f\u3002 def parent(n); (n - 1)\u2026","provider_url":"https://hatena.blog","width":"100%","author_url":"https://blog.hatena.ne.jp/sirocco/","height":"190","categories":["Ruby","Algorithm"],"url":"https://sirocco.hatenadiary.org/entry/20100103/1262474543","type":"rich","author_name":"sirocco","title":"\u5e38\u306b\u5b50\u3088\u308a\u3082\u89aa\u304c\u5927\u304d\u3044\uff08\u5c0f\u3055\u3044\uff09\u5024\u306e\u4e8c\u5206\u6728\u3092\u30d2\u30fc\u30d7\u3068\u3044\u3046\u3002","published":"2010-01-03 08:22:23"}