I think the description and test suite on this problem is slightly off. When I see 'union' I already assume that no duplicates are permitted and order is irrelevant.
Make a checkerboard matrix
What's Your BMI?
find the maximum element of the matrix
Tiling a matrix
02 - Vector Variables 5
Alternately upper-lower case
index of n^2 in magic(n)
most frequent character
Find the index of n in magic(n)
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