adventofcode/days/2024/03.rs

use advent_of_code::include_aoc;
use advent_of_code::strings::parsenumber;
use regex::{Captures, Regex};

include_aoc!(2024, 03);

fn parse_part1(input: Vec<Captures<'_>>) -> u32 {
    let mut sum = 0;
    let (mut i, mut j): (u32, u32);
    for capture in input {
        i = parsenumber(capture.name("i").unwrap().as_str());
        j = parsenumber(capture.name("j").unwrap().as_str());
        sum += i * j
    }
    sum
}

fn parse_part2(input: Vec<Captures<'_>>) -> u32 {
    let mut sum = 0;
    let mut parse = true;
    let (mut i, mut j): (u32, u32);
    for capture in input {
        match (capture.get(1).unwrap().as_str(), parse) {
            ("do()", _) => parse = true,
            ("don't()", _) => parse = false,
            (_, true) => {
                i = parsenumber(capture.name("i").unwrap().as_str());
                j = parsenumber(capture.name("j").unwrap().as_str());
                sum += i * j
            },
            (_, _) => {},
        }
    }
    sum
}

fn main() {
    let part1 = Regex::new(r"mul\((?<i>\d{1,3}),(?<j>\d{1,3})\)").unwrap();
    let part2 = Regex::new(r"(mul\((?<i>\d{1,3}),(?<j>\d{1,3})\)|do\(\)|don't\(\))").unwrap();
    let sum = parse_part1(part1.captures_iter(DATA).collect());
    println!("The Cleaned output is: {}", sum);
    let sum = parse_part2(part2.captures_iter(DATA).collect());
    println!("The Cleaned with check output is: {}", sum);
}