RosettaCodeData/Task/Left-factorials/Julia/left-factorials.julia
2018-06-22 20:57:24 +00:00

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leftfactorial(n::Integer) = n ≤ 0 ? zero(n) : sum(factorial, 0:n-1)
@show leftfactorial.(0:10)
@show ndigits.(leftfactorial.(big.(1000:1000:10_000)))