use crate::read;
use std::collections::HashSet;

fn check(chars: &[char], len: usize) -> usize {
    chars
        .windows(len)
        .enumerate()
        .find(|(_idx, w)| w.iter().collect::<HashSet<_>>().len() == len)
        .unwrap()
        .0
        + len
}

pub fn run() {
    let input = read("06");
    let chars = input.chars().collect::<Vec<_>>();

    #[cfg(feature = "part1")]
    {
        println!("Day 6, Part 01: {}", check(&chars, 4));
    }

    #[cfg(feature = "part2")]
    {
        println!("Day 6, Part 02: {}", check(&chars, 14));
    }
}