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.
surface of a spherical planet
Rotate input square matrix 90 degrees CCW without rot90
05 - Vector Equations 3
Determine the square root
Back to basics 18 - justification
Back to basics 13 - Input variables
7 segment LED display
Toolbox check part 3
Back to basics 8 - Matrix Diagonals
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