Nadvent of Code - 2022 Day 3

As a warmup for this year's Advent of Code, I'm re-reading and posting my solutions to last year's challenges. You can read, run and edit today's solution by following the post link.

This challenge was about rucksack packing but, rather than the classic computer science problem, it only required finding the common character between different strings. I chose to simply drop the strings into Sets and find the intersection.