ayato0211 https://blog.hatena.ne.jp/ayato0211/ (define -ayalog '()) https://ayato.hateblo.jp/ JavaScript いや、遊んでたら普通に昨日の記録超えた…。 console.time('xxx'); var max = 0, val, result; function collatz2(n){ var m = n, count = 0; while(m !== 1){ count++; m = (m & 1) ? (m<<1)+m+1 : m >> 1; } return count; } for(var i=2; i<=100001; i++){ val = collatz2(i); if(val > max){ max = val; result = i; } } console.log(result… 190 <iframe src="https://hatenablog-parts.com/embed?url=https%3A%2F%2Fayato.hateblo.jp%2Fentry%2F20141117%2F1416232930" title="コラッツの問題その2 - (define -ayalog &#39;())" class="embed-card embed-blogcard" scrolling="no" frameborder="0" style="display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;"></iframe> Hatena Blog https://hatena.blog 2014-11-17 23:02:10 rich https://ayato.hateblo.jp/entry/20141117/1416232930 1.0 100%