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December 2, 2015 14:35
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「シェル芸勉強会の前座的な手抜き」の解答例
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「シェル芸勉強会の前座的な手抜き」の解答例 | |
問題URL: http://techlion.jp/archives/9691 | |
問題 | |
連結したら素数になるという素数のペアを、ワンライナーでなるべくたくさん挙げてみましょう。 | |
例: 2と3(連結したら23で素数。) | |
解答例 | |
$ echo {2..100}" "{2..100} | factor | sed -rz 's/([^\n]+)\n([^\n]+)\n/\1 \2\n/g' | awk 'NF==4{print $2,$4;system("factor "$2$4)}' | sed -rz 's/([^\n]+)\n([^\n]+)\n/\1 \2\n/g' | awk 'NF==4{print $1,$2}' | |
2 3 | |
2 11 | |
2 23 | |
2 29 | |
2 41 | |
2 71 | |
2 83 | |
3 7 | |
3 11 | |
3 13 | |
(...中略...) | |
83 53 | |
83 89 | |
89 23 | |
89 29 | |
89 41 | |
89 71 | |
97 7 | |
97 19 | |
97 43 | |
97 67 |
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