Probably not the most efficient implementation, because part 1 took >1 ms and part 2 >4ms, but the code was simple enough. def part1(input) do input # ... |> Enum.map(fn {a, b} -> hd(a -- a -- b) end) |> Enum.map(&score/1) |> Enum.sum() end defp score(<<lower::utf8>>) whe…

Same solution as many for part one and two , using String.codepoints and MapSet.intersection!

Some ideas from @Aetherus solution. part 1 start = System.monotonic_time(:microsecond) File.stream!("input.txt") |> Stream.map(&String.trim/1) |> Stream.map(&:binary.bin_to_list/1) |> Stream.map(&Enum.split(&1, div(length(&1), 2))) |> Stream.map(fn {f, r} -> hd(f -- f -- r) end) |> Stream.map(fn …

Amazing! :exploding_head: I’ve learned a lot from this, thanks for sharing..

Yea ok there are some elegant solutions in here, wow :exploding_head: Made me almost not post mine :see_no_evil: Regardless, I had some fun with and learned about String.myers_difference and Enum.frequencies :smile: defmodule ExAOC2022.Day3 do @input "./lib/day3_input.txt" def puzzle1() do …

I made a small change to the ReqAOC fetch! function signature because I thought it looked nicer :slight_smile: Originally I was going to handle the session token behind the scenes, but Livebook is soooo good that the explicit version arguably provides better UX: Mix.install([ {:req_aoc, github: …

When I tested earlier today I had no problem, but now I’m getting “(Argument Error) unknown registry: Req.Finch” when I try to compile. Any idea what that’s about?

Not a specific idea, but anytime I have issues like that in Livebook first I try closing and re-opening the session and if that doesn’t working then I try forcing a reinstall with Mix.install(packages, force: true).

Same advice, different command: rm -rf _build && mix compile :slight_smile:

Yeah, I’ve tried that same error. Full error output: Compiling 1 file (.ex) 22:17:30.446 [warning] Failed to lookup telemetry handlers. Ensure the telemetry application has been started. 22:17:30.455 [warning] Failed to lookup telemetry handlers. Ensure the telemetry application has been started.…

Advent Of Code 2022 - Day 3

Learning Resources Coding Challenges

stevensonmt December 4, 2022, 6:12am 25

Not using in Livebook but just a regular project with req_aoc added to the deps in mix.exs.