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].
Find all elements less than 0 or greater than 10 and replace them with NaN
Distance walked 2D
Set some matrix elements to zero
Getting the indices from a matrix
A Simple Tide Gauge with MATLAB
How many jokers?
Multiply a column by a row
Looking for Squares
letter yes yes & letter no no
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