{"categories":["Ruby","ProjectEuler"],"image_url":null,"provider_url":"https://hatena.blog","blog_title":"\u6bdb\u306e\u306f\u3048\u305f\u3088\u3046\u306a\u3082\u306e","type":"rich","provider_name":"Hatena Blog","published":"2008-08-23 00:00:00","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fgomi-box.hatenablog.com%2Fentry%2F20080823%2FPE_P8\" title=\"Problem 8 - \u6bdb\u306e\u306f\u3048\u305f\u3088\u3046\u306a\u3082\u306e\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","author_url":"https://blog.hatena.ne.jp/gomi-box/","width":"100%","url":"https://gomi-box.hatenablog.com/entry/20080823/PE_P8","title":"Problem 8","author_name":"gomi-box","version":"1.0","height":"190","blog_url":"https://gomi-box.hatenablog.com/","description":"\u4ee5\u4e0b\u306e1000\u6841\u306e\u6570\u5b57\u304b\u30895\u3064\u306e\u9023\u7d9a\u3059\u308b\u6570\u5b57\u3092\u53d6\u308a\u51fa\u3057\u3066\u305d\u306e\u7a4d\u3092\u8a08\u7b97\u3059\u308b\u3002\u305d\u306e\u3088\u3046\u306a\u7a4d\u306e\u4e2d\u3067\u6700\u5927\u306e\u3082\u306e\u306e\u5024\u306f\u3044\u304f\u3089\u304b Problem 8 - PukiWiki def make_array(num) array = [] while num > 0 num,tmp = num.divmod(10) array.unshift(tmp) end return array end target = 73167176531330624919225119674426574742355349194934969835203127745063262395783180169848018694788518438\u2026"}