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.
Who Has the Most Change?
Find the longest sequence of 1's in a binary sequence.
Matrix indexing with two vectors of indices
04 - Scalar Equations 2
05 - Vector Equations 2
Reverse the Words (not letters) of a String
First N Perfect Squares
Read a Soroban Abacus
Check to see if a Sudoku Puzzle is Solved
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