You've got a pretty good ELO, and are brave for publishing it. How often do you play?
give nth decimal place of pi
First non-zero element in each column
Angle between two vectors
Reindex a vector
Mirror, mirror on the wall, who is fairest of them all?
Generalised Hamming Number
BLOCK x3 (Version 4)
Two functions (to be sure)
Find indices of diagonal elements
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