@goc3, for cases with multiple inputs, you might wanna sort the answers for each case.
@Dyuman Joshi: each answer is invariant with respect to input order.
I don't remember why I wrote it here but this comment doesn't belong to this question. My Apologies.
Return the first and last characters of a character array
Magic is simple (for beginners)
Wind Chill Computation
Find the 9's Complement
Scrabble Scores - 2
Word Distance - Sum
Rule of mixtures (composites) - lower bound
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