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SOLUTION MEGATHREAD-🎄- 2019 Day 3 Solutions -🎄-(self.adventofcode)
submitted 6 years, 1 month ago* (edited 14 minutes after) by daggerdragon to /r/adventofcode (134.8k)
since 6 years, 1 month ago
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I'm having performance solutions, and I see you are using Set vs Array. Is there a big difference between the two in performance?
EDIT: Oh boy. It does! Iterating over 150k items in an array and comparing is terrible compared to using Set :) TIL
" Please do NOT post your full code (unless it is very short) "