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June 2018 Update

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Ingy döt Net 2018-06-22 20:57:24 +00:00
parent ba8067c3b7
commit 22f33d4004
5278 changed files with 84726 additions and 14379 deletions
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15
Task/Digital-root/Julia/digital-root.julia
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@ -1,15 +1,14 @@
function digitalroot{S<:Integer,T<:Integer}(n::S, bs::T=10)
-1 < n && 1 < bs || throw(DomainError())
ds = n
pers = 0
while bs <= ds
function digitalroot(n::Integer, bs::Integer=10)
if n < 0 || bs < 2 throw(DomainError()) end
ds, pers = n, 0
while bs ≤ ds
ds = sum(digits(ds, bs))
pers += 1
end
return (pers, ds)
return pers, ds
end
for i in {627615, 39390, 588225, 393900588225, big(2)^100}
(pers, ds) = digitalroot(i)
for i in [627615, 39390, 588225, 393900588225, big(2) ^ 100]
pers, ds = digitalroot(i)
println(i, " has persistence ", pers, " and digital root ", ds)
end