love the "unique" command!
Do not cheat yourself,OK?
I added additional cases to the test suite, so this attempted solution is incorrect now.
First non-zero element in each column
Column norms of a matrix
Longest run of consecutive numbers
sum of non-primes
Flip the vector from right to left
Tune your guitar
Are you in or are you out?
The Hitchhiker's Guide to MATLAB
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