noriok https://blog.hatena.ne.jp/noriok/ C#練習日記 https://noriok.hatenadiary.jp/ PE C# sage Problem 42 using System; using System.Collections.Generic; using System.IO; using System.Text.RegularExpressions; using System.Linq; class PE042 { static bool IsTriangleWord(string word) { int sum = word.Select(c => c - 'A' + 1).Sum(); int n = 0; for (int i = 1; ; i++) { n += i; if (n > sum) return … 190 <iframe src="https://hatenablog-parts.com/embed?url=https%3A%2F%2Fnoriok.hatenadiary.jp%2Fentry%2F2014%2F09%2F06%2F220018" title="Project Euler 42 - C#練習日記" class="embed-card embed-blogcard" scrolling="no" frameborder="0" style="display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;"></iframe> http://cdn-ak.f.st-hatena.com/images/fotolife/n/noriok/20140906/20140906211853.png Hatena Blog https://hatena.blog 2014-09-06 22:00:18 rich https://noriok.hatenadiary.jp/entry/2014/09/06/220018 1.0 100%