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 the numeric mean of the prime numbers in a matrix.
Indexed Probability Table
Find the sum of the elements in the "second" diagonal
Back to basics 2 - Function Path
Return the Nth Output from an Input Command
Make a 1 hot vector
Great Circle Distance
Set a Soroban Abacus
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