src/day15pt1.rs


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fn hash(s: String) -> u64 {
    let mut sum: u64 = 0;
    for c in s.chars() {
        sum += c as u64;
        sum *= 17;
        sum %= 256;
    }
    return sum;
}

pub fn main() {
    let txt = std::fs::read_to_string("./input/day15.txt").unwrap();

    let mut sum: u64 = 0;
    let input = txt.trim().split(",");
    for s in input {
        sum += hash(s.to_string());
    }

    println!("{}", sum);
}