bjorng

Erlang Core Team

Advent of Code 2019 - Day 3

Note: This topic is to talk about Day 3 of the Advent of Code 2019 .

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29 comments

#2019 #advent-of-code

34 2528 29

2019-12-08 19:59:10 UTC

Most Liked

bjorng

Erlang Core Team

Here is my solution.

Post #2

sasajuric

Author of Elixir In Action

Today was a bit finicky. Here’s my take.

Post #3

ferd

Author of Property-Based Testing with PropEr, LYSE, & Erlang in Anger

Here’s my erlang take on day 3:

Post #12

NobbZ

Todays solution is a bit earlier as usual for me, as I currently can’t do office work as we have an internet outage. Doing this per mobile connection sharing right now.

Solution is at github, as usual.

gitlab.com

NobbZ/aoc_ex/blob/master/lib/y2019/d3.ex

defmodule AocEx.Y2019.D3 do
  use AocEx.Boilerplate,
    transform: fn raw ->
      raw
      |> String.split()
      |> Enum.map(fn line ->
        line
        |> String.split(",")
        |> Enum.map(fn
          "U" <> num -> {:up, String.to_integer(num)}
          "R" <> num -> {:right, String.to_integer(num)}
          "D" <> num -> {:down, String.to_integer(num)}
          "L" <> num -> {:left, String.to_integer(num)}
        end)
      end)
    end

  def part1(input \\ processed()) do
    [wire1, wire2] =
      input

This file has been truncated. show original

Implementation is pretty straight forward after one has realised that we are basically just dealing with 2 sets and we want to know where they intersect

Though code clean up has to wait, as I have to attend to a meeting in a couple of minutes, which we will hold as scheduled despite the internet problem.

Post #5

JEG2

Author of Designing Elixir Systems with OTP

My solution.

Post #21

Where Next?

View thread on forum (has 29 responses!)

2019

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Home Learning Resources>Coding Challenges

#2019 #advent-of-code

34 2530 29

Last post

Advent of Code 2019 - Day 3

bjorng

Advent of Code 2019 - Day 3

Most Liked

bjorng

sasajuric

ferd

NobbZ

JEG2

Where Next?

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