day6

Mix.install([
  {:kino, "~> 0.7.0"}
])

Input

input = Kino.Input.textarea("Data")

Part 1

Biggest difficulty here was figuring I actually need to add 4 at the end, because i’m reading the full current chunk. You don’t really consider that fact when you’re using Enum.chunk_every/3

input
|> Kino.Input.read()
|> String.split("", trim: true)
|> Enum.chunk_every(4, 1)
|> Enum.find_index(&(&1 == Enum.uniq(&1)))
|> Kernel.+(4)

Part 2

Somewhat disappointing part 2. All it took to do this in elixir was to change the chunk size.

input
|> Kino.Input.read()
|> String.split("", trim: true)
|> Enum.chunk_every(14, 1)
|> Enum.find_index(&(&1 == Enum.uniq(&1)))
|> Kernel.+(14)