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.
Select every other element of a vector
Reverse the vector
Back to basics 2 - Function Path
Add two numbers
Determine the square root
Back to basics 22 - Rotate a matrix
Back to basics 21 - Matrix replicating
Back to basics 3 - Temp Directory
Back to basics 9 - Indexed References
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