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シェルのワンライナーで素数を求める

shell

Last updated at 2014-07-26Posted at 2014-07-26

シェルのワンライナーで素数を求める

factorコマンド使えば簡単にできるのに気付いた

$ for i in {1..100} ; do test "${i}" = "$(factor $i | sed 's/[0-9]*: *//' | sed '/^$/d')" && echo $i ; done
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