Primality by trial division: Difference between revisions
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'1'*n !~ /^1?$|^(11+?)\1+$/ |
'1'*n !~ /^1?$|^(11+?)\1+$/ |
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end</lang> |
end</lang> |
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=={{header|Scala}}== |
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<lang scala>def isPrime(n: Int) = n > 1 && (Iterator.from(2) takeWhile (d => d * d <= n) forall (n % _ != 0))</lang> |
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=={{header|Scheme}}== |
=={{header|Scheme}}== |
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