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Ingy döt Net 2023-07-01 11:58:00 -04:00
parent 7387c8f97b
commit cb5bb5e222
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Task/Digital-root/Julia/digital-root.julia Normal file
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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
end
for i in [627615, 39390, 588225, 393900588225, big(2) ^ 100]
pers, ds = digitalroot(i)
println(i, " has persistence ", pers, " and digital root ", ds)
end