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Ingy döt Net 2023-07-01 11:58:00 -04:00
parent 7387c8f97b
commit cb5bb5e222
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Task/Modular-inverse/Julia/modular-inverse-1.julia Normal file
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invmod(a, b)

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Task/Modular-inverse/Julia/modular-inverse-2.julia Normal file
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function modinv{T<:Integer}(a::T, b::T)
b0 = b
x0, x1 = zero(T), one(T)
while a > 1
q = div(a, b)
a, b = b, a % b
x0, x1 = x1 - q * x0, x0
end
x1 < 0 ? x1 + b0 : x1
end
modinv(a::Integer, b::Integer) = modinv(promote(a,b)...)