Eban numbers: Difference between revisions
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Thundergnat (talk | contribs) m (→{{header|Perl 6}}: Better output formatting, trap some edge case errors.) |
Thundergnat (talk | contribs) (→{{header|Perl 6}}: modify to accept multi-letter 'bans', note OEIS sequences covered) |
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Modular approach, very little is hard coded. Change the order of magnitude limits to adjust the search/display ranges. Change the letter given to the nban sub to change which letter to disallow. |
Modular approach, very little is hard coded. Change the order of magnitude limits to adjust the search/display ranges. Change the letter given to the nban sub to change which letter to disallow. |
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Demonstrate for e-ban and t-ban. |
Demonstrate for e-ban and t-ban. Will handle multi-character 'bans' as well. |
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Directly find : |
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:* [[oeis:A006933|OEIS Numbers without e]]: Eban |
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:* [[oeis:A089589|OEIS Numbers without i]]: Iban |
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:* [[oeis:A089590|OEIS Numbers without u]]: Uban |
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:* [[oeis:A008521|OEIS Numbers without o]]: Oban |
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:* [[oeis:A008523|OEIS Numbers without t]]: Tban |
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:* [[oeis:A072954|OEIS Numbers without a, i, l, t]]: TALIban |
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<lang perl6>use Lingua::EN::Numbers::Cardinal; |
<lang perl6>use Lingua::EN::Numbers::Cardinal; |
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sub nban ($seq, $n = 'e') { ($seq).map: { next if .&cardinal.contains($n); $_ } } |
sub nban ($seq, $n = 'e') { ($seq).map: { next if .&cardinal.contains(any($n.comb)); $_ } } |
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sub comma { $^i.flip.comb(3).join(',').flip } |
sub comma { $^i.flip.comb(3).join(',').flip } |
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