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.
Back to basics 16 - byte order
Replace multiples of 5 with NaN
Equal to their cube
Celsius to Fahrenheit converter
Toolbox check part 3
Back to basics 9 - Indexed References
Back to basics 6 - Column Vector
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