{"width":"100%","height":"190","published":"2012-01-12 00:00:00","url":"https://inamori.hateblo.jp/entry/20120112/p1","author_url":"https://blog.hatena.ne.jp/inamori/","title":"Scala\u3067Project Euler\uff08125\uff09","description":"Problem 85\u524d\u3005\u56de\u306e\u65b9\u6cd5\u3060\u3068\u8a08\u7b97\u91cf\u306f\u3060\u3044\u305f\u3044O(N1/4)\u306b\u306a\u308a\u307e\u3059\u3002\u3060\u304b\u3089\u30011032\u304f\u3089\u3044\u304c\u8996\u91ce\u306b\u5165\u3063\u3066\u304d\u307e\u3059\u3002Scala\u306fBigInt\u3092\u4f7f\u3046\u3068\u9045\u304f\u306a\u308b\u306e\u3067\u3001\u578b\u3092\u6c7a\u3081\u308b\u306e\u306f\u91cd\u8981\u3067\u3059\u3002m\u306fInt\u3067\u5341\u5206\u3067\u3059\u3002n\u306fLong\u304c\u5fc5\u8981\u3067\u3059\u3002\u305d\u308c\u304b\u3089\u3001sqrt\u3067\u3059\u304c\u3001\u3053\u308c\u306f\u5f15\u6570\u304c\u5927\u304d\u304f\u306a\u308b\u3068Double\u3067\u306e\u8a08\u7b97\u3067\u306f\u4e0d\u5341\u5206\u306b\u306a\u308a\u307e\u3059\u3002\u4f8b\u3048\u3070\u3001 scala> sqrt((BigInt(1e16.toLong) - 1).toDouble).toInt res3: Int = 100000000 \u9593\u9055\u3063\u3066\u307e\u3059\u306d\u3002\u3053\u308c\u306f\u3001Double\u306esqrt\u306e\u7d50\u679c\u3092\u521d\u671f\u5024\u306b\u3057\u3066\u3044\u3064\u3082\u306e\u7e70\u308a\u8fd4\u3057\u8a08\u7b97\u3092\u3059\u308b\u3068\u901f\u3044\u3067\u3057\u3087\u3046\u3002\u2026","image_url":null,"html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Finamori.hateblo.jp%2Fentry%2F20120112%2Fp1\" title=\"Scala\u3067Project Euler\uff08125\uff09 - inamori\u2019s diary\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","categories":["Scala"],"type":"rich","version":"1.0","provider_name":"Hatena Blog","author_name":"inamori","blog_title":"inamori\u2019s diary","provider_url":"https://hatena.blog","blog_url":"https://inamori.hateblo.jp/"}