Needs more test cases, having arrays with more than 4 elements.
This is definitely cheating.
I couldn't resist... :o) Sorry!!!
In an act of protest, this answer includes the oxford comma. ;)
Hear, hear, the only way to prevent lexical ambiguity is the Oxford comma. As proof, I submit a friendly panda (eats, shoots and leaves) versus an unfriendly guest (eats, shoot, and leaves).
Find the sum of all the numbers of the input vector
Sort numbers by outside digits
Calculate the Hamming distance between two strings
Make a 1 hot vector
Find a Pythagorean triple
Create different color vectors.
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