Covering some basic topics I haven't seen elsewhere on Cody.
Return the number of punctuation characters in the input variable.
Trouble in the test suite :)
I think the problem is with Cody itself today. It's doing weird things. If you submit this solution again it fails.
Find the numeric mean of the prime numbers in a matrix.
letter yes yes & letter no no
Convert from Base 10 to base 5
Find the logic
Back to basics 21 - Matrix replicating
Back to basics 8 - Matrix Diagonals
Back to basics 20 - singleton dimensions
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