Note that all solutions (which passed the limited test suite with small size) involving only pair-wise gcd calculations are indeed incorrect. Those solutions include the following ones: 1) min(gcd(a,min(a))); 2) min(gcd(a(1), a)); 3) min(min(bsxfun(@gcd,a,a.'))); To eliminate these incorrect solutions, please simply add a test case with a = [21 15 35].
2 b | ~ 2 b
Back to basics 18 - justification
Cody Matlab Version
Divisors of an integer
03 - Matrix Variables 3
chance in percent for minimum K heads when a good coin is tossed N times?
Compress strings (not springs)
Energy of a photon
Volume of this donut
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