AOC day 3
Any elixir enjoyers tell me why this solution doesn't work for aoc day 3? I tried to use a parser combinator lib (NimbleParsec) cause my one true love haskell would've handled this in 1 loc lemon squeezy with parsec
defmodule Aoc24.Day3 do
import NimbleParsec
def run do
File.read!("inputs/day3.txt") |> String.replace(~r/\s+/, "") |> process()
end
mul_parser =
ignore(string("mul("))
|> concat(integer(min: 1, max: 3))
|> ignore(string(","))
|> concat(integer(min: 1, max: 3))
|> ignore(string(")"))
|> reduce({List, :to_tuple, []})
mem_parser =
repeat(
choice([
mul_parser,
utf8_string([not: ?m], min: 1) |> ignore()
])
)
defparsec(:parse_memory, mem_parser)
def process(input) do
{:ok, parsed, _, _, _, _} = parse_memory(input)
Enum.map(parsed, fn {x, y} -> x * y end)
|> Enum.sum()
|> IO.inspect()
end
end
4d
:quality(85)/https://cdn.upit.com/j0diaijevi0zhu1u9x8q03df.jpeg)
:quality(85)/https://cdn.upit.com/w0092fbv5fasyei8qztjq9nj.jpeg)
:quality(85)/https://cdn.upit.com/w0092fbv5fasyei8qztjq9nj.jpeg)
