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.
Select every other element of a vector
Find state names that start with the letter N
Find a subset that divides the vector into equal halves
Flag largest magnitude swings as they occur
Sum the Digits of a Number
Give the Shortest Path Through The Maze
Make a 1 hot vector
Square Digits Number Chain Terminal Value (Inspired by Project Euler Problem 92)
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