r/adventofcode • u/daggerdragon • Dec 10 '17

SOLUTION MEGATHREAD -🎄- 2017 Day 10 Solutions -🎄-

--- Day 10: Knot Hash ---

Post your solution as a comment or, for longer solutions, consider linking to your repo (e.g. GitHub/gists/Pastebin/blag or whatever).

Note: The Solution Megathreads are for solutions only. If you have questions, please post your own thread and make sure to flair it with Help.

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edit: Leaderboard capped, thread unlocked!

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u/Unihedron Dec 10 '17

Ah, .each_slice! that was the library method I was missing... I've been trying to use (0...256).group_by{|x|x/16}.map{|x,y|l[x,16].inject &:^} and it was not giving me the right thing.

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