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First time writing Elixir. It's probably janky af.
I've had some help from AI to get some pointers along the way. I'm not competing in any way, just trying to learn and have fun.
~~Part 2 is currently not working, and I can't figure out why.
I'm trying to just remove everything from "don't()" to "do()" and just pass the rest through the working solution for part 1. Should work, right?
Any pointers?~~
edit; working solution:
defmodule Three do
def get_input do
File.read!("./input.txt")
end
def extract_operations(input) do
Regex.scan(~r/mul\((\d{1,3}),(\d{1,3})\)/, input)
|> Enum.map(fn [_op, num1, num2] ->
num1 = String.to_integer(num1)
num2 = String.to_integer(num2)
[num1 * num2]
end)
end
def sum_products(ops) do
List.flatten(ops)
|> Enum.filter(fn x -> is_integer(x) end)
|> Enum.sum()
end
def part1 do
extract_operations(get_input())
|> sum_products()
end
def part2 do
String.split(get_input(), ~r/don\'t\(\)[\s\S]*?do\(\)/)
|> Enum.map(&extract_operations/1)
|> sum_products()
end
end
IO.puts("part 1: #{Three.part1()}")
IO.puts("part 2: #{Three.part2()}")
Part 2 is currently not working, and I can’t figure out why. I’m trying to just remove everything from “don’t()” to “do()” and just pass the rest through the working solution for part 1. Should work, right?
I think I had the same issue. Consider what happens if there isn't a do() after a don't().