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.
Find all elements less than 0 or greater than 10 and replace them with NaN
Reverse the elements of an array
Make a 1 hot vector
Generalized N-Cards Problem
Pull the variable y_correct from the Caller's Workspace
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