Tip: This kind of problem that seems incredibly hard usually have a formula (someone already researched this). Find the formula, and solve the problem.
Extract leading non-zero digit
Count decimal digits of a number
Detect pair of equal values in a Matrix
Hamming Weight - Fast
REPMAT Enhancement - Faster for Large Row Replication of Vector
PACMAT - Ghosts maximize unique locations; 3 Lives
Kryptos - CIA Cypher Sculpture: Vignere Decryption
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