FYI: The fastest solution mentioned at the problem description uses a lookup-table. Don't beat yourself too much.
Hello, William. I like very much the originality & especially the efficiency of your approach here. Am I correct in thinking that the existing code would struggle to correctly decode a message that was encoded from (say) "Beware of the Sasquatch Man's involvement in Operation Phoenix"? [I don't want to explain this, to avoid giving too many clues to others. But I hope you get my point.] Although I am confident you could tweak your code (if necessary) to handle such cases. —DIV
Remove the polynomials that have positive real elements of their roots.
Distance walked 3D
Who knows the last digit of pi?
Min of a Matrix
Arrange the names in alphabetical order (1)
Rate of event occurence: find percentiles of the distribution (for smallish rates)
Monte Carlo integration: area of a polygon
Seemingly impossible problem
The twelve days of Christmas
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