Given a number, return the number of closed 'circles' in the base 10 numerical representation.
Note: the number 4 has no circles
8819 -> 5
Interpolating on a string (the ASCII values) is an interesting idea even though the long interpolation string could be reduced by subtracting '0', but at the expense of a "longer" solution.
Back to basics 12 - Input Arguments
Add two numbers
05 - Vector Equations 1
Guess the Coefficients!
Lychrel Number Test (Inspired by Project Euler Problem 55)
Determine if a Given Number is a Triangle Number
THE CALCULATOR OF LOVE
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