Snippet

advent_of_code/2024_3.rb

Code:

# Advent of Code 2024, Day 3: Mull It Over

# https://adventofcode.com/2024/day/3

require_relative './helpers.rb'

def parse_mul(data)
  data.split("mul").map { |a|
    a.scan(/^\(\d+,\d+\)/).map { |m|
      m[1..-2].split(",").map(&:to_i).inject(:*)
    }
  }.flatten
end

def part_one(data)
  parse_mul(data).sum
end

def part_two(data)
  parse_mul(data.split("do()").map { |d| d.split("don't()")[0] }.join).sum
end

def solve(data)
  data = data.join
  [part_one(data), part_two(data)]
end

puts solve(get_dataset(year: 2024, day: 3, type: 'example'))
puts solve(get_dataset(year: 2024, day: 3, type: 'example_2'))
puts solve(get_dataset(year: 2024, day: 3, type: 'input'))

Output: