June 2018 Update
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Task/Almost-prime/Factor/almost-prime.factor
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Task/Almost-prime/Factor/almost-prime.factor
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USING: formatting fry kernel lists lists.lazy locals
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math.combinatorics math.primes.factors math.ranges sequences ;
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IN: rosetta-code.almost-prime
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: k-almost-prime? ( n k -- ? )
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'[ factors _ <combinations> [ product ] map ]
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[ [ = ] curry ] bi any? ;
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:: first10 ( k -- seq )
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10 0 lfrom [ k k-almost-prime? ] lfilter ltake list>array ;
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5 [1,b] [ dup first10 "K = %d: %[%3d, %]\n" printf ] each
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