Groupon面经Prepare: Max Cycle Length - neverlandly - 博客园



Groupon面经Prepare: Max Cycle Length - neverlandly - 博客园

题目是遇到偶数/2,遇到奇数 *3 + 1的题目,然后找一个range内所有数字的max cycle length。对于一个数字,比如说44,按照题目的公式不停计算,过程是 44, 22, 11, 8, 9 ,1(瞎起的),从44到1的这个sequence的长度,叫做cycle length。然后题目是给一个range,比如[2,300],求这里面所有数字的cycle length的最大值。follow up跑1到1 million


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