Create a square matrix of multiples
Remove white space from the string
Make a 1 hot vector
Number of digits in an integer
Flip the vector from right to left
How many trades represent all the profit?
Project Euler: Problem 2, Sum of even Fibonacci
Find perfect placement of non-rotating dominoes (easier)
Project Euler: Problem 7, Nth prime
String substitution, sub problem to cryptoMath
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