AOC2022/day1/src/main.rs
2022-12-02 19:24:31 -05:00

37 lines
919 B
Rust

use std::fs::File;
use std::io::{BufReader, BufRead, Error, Read};
fn main() -> Result<(), Error> {
let path = "input.txt";
let input = File::open(path)?;
let mut buffered = BufReader::new(input);
let mut biggest_value: i32 = 0;
let mut counter: i32 = 0;
let mut vec: Vec<i32> = Vec::new();
let mut p = buffered.by_ref().lines().peekable();
while let Some(i) = p.next() {
let number: i32 = i?.parse().unwrap_or(0);
counter = counter + number;
if number == 0 {
if counter > biggest_value { biggest_value = counter };
vec.push(counter);
counter = 0;
};
};
if counter > biggest_value { biggest_value = counter };
vec.push(counter);
vec.sort();
println!("{}", biggest_value);
let last3 = vec.as_slice()[vec.len()-3..].to_vec();
println!("{:?}", last3.iter().sum::<i32>());
Ok(())
}