费马素性检验
发布时间:2020-12-17 04:07:08 所属栏目:百科 来源:网络整理
导读:今天PHP站长网 52php.cn把收集自互联网的代码分享给大家,仅供参考。 def fermat(num,iter) #num is the number to test,iter is the maximum number of iterations (higher is more accurate) rand = 1+rand(num-1) for
以下代码由PHP站长网 52php.cn收集自互联网 现在PHP站长网小编把它分享给大家,仅供参考 def fermat(num,iter) #num is the number to test,iter is the maximum number of iterations (higher is more accurate) rand = 1+rand(num-1) for i in 1..iter if (rand**(num-1))%num == 0 return false else rand = 1+rand(num-1) end end return true end #Example puts fermat(16,100) #=>false puts fermat(7,100) #=>true puts fermat(221,100) #=>Counterexample. Called a Fermat Liar. Returns true (if the iter is low enough (usually)) actually is composite 以上内容由PHP站长网【52php.cn】收集整理供大家参考研究 如果以上内容对您有帮助,欢迎收藏、点赞、推荐、分享。 (编辑:李大同) 【声明】本站内容均来自网络,其相关言论仅代表作者个人观点,不代表本站立场。若无意侵犯到您的权利,请及时与联系站长删除相关内容! |