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.
Find best placement for ordered dominoes (harder)
"Low : High - Low : High - Turn around " -- Create a subindices vector
Back to basics - mean of corner elements of a matrix
Back to basics 13 - Input variables
Back to basics 4 - Search Path
Back to basics 24 - Symbolic variables
Back to basics 23 - Triangular matrix
Back to basics 8 - Matrix Diagonals
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