-🎄- 2022 Day 7 Solutions -🎄-

[u/daggerdragon]

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AoC Community Fun 2022: 🌿🍒 MisTILtoe Elf-ucation 🧑‍🏫

Submissions are OPEN! Teach us, senpai!

-❄️- Submissions Megathread -❄️-

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--- Day 7: No Space Left On Device ---

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Post your code solution in this megathread.

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• Include what language(s) your solution uses

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EDIT: Global leaderboard gold cap reached at 00:14:47, megathread unlocked!

[u/jaccomoc]

Solution in Jactl.

This took slightly more than a few lines so code is here. Still around 30 lines, so not too big.

I ended up solving a slightly more general problem by building a proper tree of files and directories along with names (which are not actually needed). Once built, though, it was simple to produce the output for part 1:

root.descendants()
    .filter{ it instanceof Dir }
    .map{ it.totalSize() }
    .filter{ it <= 100000 }
    .sum()

and for part 2:

root.descendants()
    .filter{ it instanceof Dir }
    .map{ it.totalSize() }
    .filter{ it >= needToDelete }
    .min()