Covering some basic topics I haven't seen elsewhere on Cody.
Return the number of punctuation characters in the input variable.
193 Solvers
Number of 1s in a binary string
1231 Solvers
631 Solvers
Find nearest prime number less than input number
182 Solvers
Given a matrix, return the last eigen value
138 Solvers
Solution 51377
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.