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.
Least common multiple of many numbers
Bottles of beer
Back to basics 8 - Matrix Diagonals
Cell Counting: How Many Draws?
The Bomb Problem
Generate N equally spaced intervals between -L and L
First N Perfect Squares
Next Higher Power of B
THE CALCULATOR OF LOVE
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