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.
peta to nano (x-ray)
Vectorizing, too easy or too hard?
Flag largest magnitude swings as they occur
Find out missing number from a vector of 9 elements
Equal to their cube
Back to basics 21 - Matrix replicating
Back to basics 11 - Max Integer
Back to basics 25 - Valid variable names
Back to basics 7 - Equal NaNs
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