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.
Inner product of two vectors
Back to basics 1 - Saving
Spot the outlier
Create incrementing array
Back to basics 6 - Column Vector
Back to basics 14 - Keywords
Back to basics 21 - Matrix replicating
Back to basics 23 - Triangular matrix
Back to basics 22 - Rotate a matrix
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