Don’t know why the regex ~r/[\W && [^\.]]/x does not work in Elixir. It works pretty well in Ruby. Anyway, here is my solution: Aetherus/advent-of-code/blob/master/2023/day-03.livemd # Advent of Code 2023 Day 3 ```elixir Mix.install([ {:kino_aoc, "~> 0.1.5"} ]) ``` ## Section <…

I like it, it’s very concise. Mine is quite long, and this does not even contains the code for the Grid helper :smiley: defmodule AdventOfCode.Y23.Day3 do alias AoC.Input, warn: false def read_file(file, _part) do Input.stream!(file, trim: true) end def parse_input(input, _part) do …

Wow this one. Not a dataset I’d like to traverse at midnight. But I love LiveBook. I really do. defmodule AdventOfCode.Y2023.Day03 do alias AdventOfCode.Helpers.{InputReader, Transformers} def input, do: InputReader.read_from_file(2023, 3) def run(input \\ input()) do input = parse(inpu…

This one took me two hours continuously to get working. contains_symbol = fn s -> match = Regex.match?(~r/[^\d.]/, s) match end grab_numbers = fn line -> Regex.scan(~r/\d+/, line, return: :index) |> Enum.map(fn [{index, len}] -> {index, len, line |> String.slice(index, len) |> Integer.…

I’m not proud of this code, but hey, it works and it’s fast. mexicat/aoc-2023/blob/main/lib/aoc/day_03.ex defmodule AoC.Day03 do @dirs [{1, 0}, {0, 1}, {-1, 0}, {0, -1}, {1, 1}, {-1, 1}, {-1, -1}, {1, -1}] def part1(input) do {lines, chars} = parse_input(input, ~r/[^0-9.]/)…

I got tripped up on an off-by-one error with my ranges in part 1. That’s what I get for staying up late to do this one. midouest/advent-of-code-2023/blob/main/notebooks/day03.livemd # Day 3 ```elixir Mix.install([ {:req, "~> 0.4.5"}, {:kino, "~> 0.11.3"} ]) ``` ## Input ```el…

Not super happy about that one, I guess the parser emission could’ve been more elegant aerosol/aoc/blob/main/lib/advent_of_code/day_03.ex defmodule AdventOfCode.Day03 do defmodule Parser do import NimbleParsec number = integer(min: 1, max: 3) |> post_traverse(…

Performance of list_adjecent_numbers is bad but it works… :upside_down_face: pehbehbeh/adventofcode/blob/main/2023/03.livemd  # Advent of Code 2023 - Day 03 ```elixir Mix.install([ {:kino, "~> 0.11.0"} ]) …

My beginner’s solution, Day 3 part 1. My focus was on readability. How I did? defmodule Day03 do def part1(input) do # " 467.. # ...*. # ..35 " schematic = input |> String.split("\n") |> Enum.map(&String.graphemes/1) # [ ["4", "6", "7", ".", "."], # [".", "."…

Preprocessing: defmodule Day03 do def parse_line("", {_, _, acc}), do: acc def parse_line("." <> rest, {x, y, acc}), do: parse_line(rest, {x + 1, y, acc}) def parse_line(<<c>> <> _ = str, {x, y, items}) when c in ?0..?9 do {num, rest} = Integer.parse(str) len = floor(:math.log10(num)…

Advent of Code 2023 - Day 3

Learning Questions & Discussions Coding Challenges

Aetherus December 3, 2023, 7:05am 3

I’m not satisfied with my Part 2, either. It costs 300ms to run on my computer