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.
Get the area codes from a list of phone numbers
Back to basics 15 - classes
Find the nearest integer
Create a two dimensional zero matrix
Back to basics 11 - Max Integer
Back to basics 22 - Rotate a matrix
Back to basics 15 - Benchmark
Back to basics 21 - Matrix replicating
Back to basics 12 - Input Arguments
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