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.
radius of a spherical planet
Compute a dot product of two vectors x and y
Permute diagonal and antidiagonal
Is this triangle right-angled?
Return the 'Size' of a String of Code
Test if a Number is a Palindrome without using any String Operations
Return the Nth Output from an Input Command
Next Higher Power of B
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