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.
Sum all integers from 1 to 2^n
Swap the input arguments
Calculate the area of a triangle between three points
Given a 4x4 matrix, swap the two middle columns
Back to basics 7 - Equal NaNs
Back to basics 8 - Matrix Diagonals
Back to basics 14 - Keywords
Back to basics 16 - byte order
Back to basics 17 - white space
Choose a web site to get translated content where available and see local events and offers. Based on your location, we recommend that you select: .
You can also select a web site from the following list:
Select the China site (in Chinese or English) for best site performance. Other MathWorks country sites are not optimized for visits from your location.
Contact your local office