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.
Sort a list of complex numbers based on far they are from the origin.
Project Euler: Problem 6, Natural numbers, squares and sums.
ASCII Birthday Cake
Pig Latin to English Translator
First N Perfect Squares
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