Descending primes: Difference between revisions
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(→{{header|Ruby}}: Add Ruby) |
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digits.combination(n).filter_map do |set| |
digits.combination(n).filter_map do |set| |
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candidate = set.join.to_i |
candidate = set.join.to_i |
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⚫ | |||
candidat |
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⚫ | |||
end.reverse |
end.reverse |
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end |
end |
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<pre>2,3,5,7,31,41,43,53,61,71,73,83,97,421,431,521,541,631,641,643,653,743,751,761,821,853,863,941,953,971,983,5431,6421,6521,7321,7541,7621,7643,8431,8521,8543,8641,8731,8741,8753,8761,9421,9431,9521,9631,9643,9721,9743,9851,9871,75431,76421,76541,76543,86531,87421,87541,87631,87641,87643,94321,96431,97651,98321,98543,98621,98641,98731,764321,865321,876431,975421,986543,987541,987631,8764321,8765321,9754321,9875321,97654321,98764321,98765431 |
<pre>2,3,5,7,31,41,43,53,61,71,73,83,97,421,431,521,541,631,641,643,653,743,751,761,821,853,863,941,953,971,983,5431,6421,6521,7321,7541,7621,7643,8431,8521,8543,8641,8731,8741,8753,8761,9421,9431,9521,9631,9643,9721,9743,9851,9871,75431,76421,76541,76543,86531,87421,87541,87631,87641,87643,94321,96431,97651,98321,98543,98621,98641,98731,764321,865321,876431,975421,986543,987541,987631,8764321,8765321,9754321,9875321,97654321,98764321,98765431 |
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</pre> |
</pre> |
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=={{header|Sidef}}== |
=={{header|Sidef}}== |
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<lang ruby>func primes_with_descending_digits(base = 10) { |
<lang ruby>func primes_with_descending_digits(base = 10) { |