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.
Replace NaNs with the number that appears to its left in the row.
Number of toolboxes?
Flip the main diagonal of a matrix
Is A the inverse of B?
06 - Matrix Equations 1
Alternately upper-lower case
index of n^2 in magic(n)
execute the declaration in strings and return value
Find the index of n in magic(n)
most frequent character
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