Julia: Get GCD of Numbers

GCD stands for Greatest Common divisor.  GCD(a1, a2…aN) is a positive number N, which divides all a1,a2…aN with remainder 0.

gcd(a1, a2…aN)
Return GCD of numbers a1, a2…aN. Return zero if a1, a2..aN are zeros.

julia> gcd(10, 15, 25)
5

julia> gcd(10, 0)
10

julia> gcd(10, 20, 0)
10

julia> gcd(0, 0, 0)
0

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