{"provider_name":"Hatena Blog","image_url":null,"description":"\u914d\u5217\u306e\u7a4d\u548c\u6f14\u7b97\u306e\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0 \u300c\u7279\u5225\u306a\u914d\u5217\u300d\u304c\u4e0e\u3048\u3089\u308c\u308b\u306e\u3067\u7a4d\u548c\u6f14\u7b97\u3092\u884c\u3063\u3066\u5024\u3092\u8fd4\u3059\u3002\u300c\u7279\u5225\u306a\u914d\u5217\u300d\u306f\u6570\u5024\u3042\u308b\u3044\u306f\u300c\u7279\u5225\u306a\u914d\u5217\u300d\u3092\u3082\u3064\u3002\u300c\u7279\u5225\u306a\u914d\u5217\u300d\u5185\u306e\u6570\u5024\u3092\u3059\u3079\u3066\u52a0\u7b97\u3059\u308b\u304c\u3001\u30cd\u30b9\u30c8\u30ec\u30d9\u30eb\u306b\u5fdc\u3058\u3066\u305d\u306e\u548c\u3092\u4e57\u7b97\u3059\u308b\u3002 \u4f8b\u3048\u3070\u3001 [x, y] \u2192 x + y [x, [y, z]] \u2192 x + 2(y + z) [1, [2, [3, 4]]] \u2192 1 + 2 * (2 + 3 * (3 + 4)) \u2192 47 \u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u5b9f\u88c5(1) $O(n)$ \u518d\u5e30\u95a2\u6570\u3092\u5225\u9014\u4f5c\u308b\u306e\u304c\u697d\u3002\u898b\u305f\u307e\u3093\u307e\u3067\u3001\u914d\u5217\u306a\u3089depth\u306b1\u3092\u52a0\u3048\u3066\u518d\u5e30\u95a2\u6570\u3092\u5b9f\u884c\u3057\u3001\u6570\u5024\u306a\u3089\u52a0\u7b97\u3059\u308b\u3002 function productSum(a\u2026","title":"\u914d\u5217\u306e\u7a4d\u548c\u6f14\u7b97\u306e\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0","author_url":"https://blog.hatena.ne.jp/uraway/","categories":["algorithm"],"html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Furaway.hatenablog.com%2Fentry%2F2020%2F02%2F19%2F070000\" title=\"\u914d\u5217\u306e\u7a4d\u548c\u6f14\u7b97\u306e\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0 - \u6587\u7cfb\u30d7\u30ed\u30b0\u30e9\u30de\u30fc\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","height":"190","version":"1.0","published":"2020-02-19 07:00:00","blog_title":"\u6587\u7cfb\u30d7\u30ed\u30b0\u30e9\u30de\u30fc","author_name":"uraway","width":"100%","blog_url":"https://uraway.hatenablog.com/","url":"https://uraway.hatenablog.com/entry/2020/02/19/070000","type":"rich","provider_url":"https://hatena.blog"}