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day02 task2 - still poor but working 😓

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Thomas Ruoff
2021-12-30 23:05:14 +01:00
parent 5479ab9be8
commit e659170d7e
1 changed files with 17 additions and 10 deletions
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27
day02/src/main.rs
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@@ -3,8 +3,9 @@ use std::io::{self, BufRead};
use std::path::Path; use std::path::Path;
fn main() { fn main() {
let mut depth = 0; let mut depth: i32 = 0;
let mut pos_h = 0; let mut pos_h: i32 = 0;
let mut aim: i32 = 0;
if let Ok(lines) = read_lines("./data/input") { if let Ok(lines) = read_lines("./data/input") {
for line in lines { for line in lines {
if let Ok(str) = line { if let Ok(str) = line {
@@ -12,21 +13,27 @@ fn main() {
let direction = words[0]; let direction = words[0];
let number = words[1].parse::<i32>().unwrap(); let number = words[1].parse::<i32>().unwrap();
match direction { if direction == "down" {
"down" => depth = depth + number, aim += number;
"up" => depth = depth - number, } else if direction == "up" {
"forward" => pos_h = pos_h + number, aim -= number;
_ => eprintln!("UNKNOWN!!!!!"), } else if direction == "forward" {
depth += number * aim;
pos_h += number;
} else {
eprintln!("UNKNOWN!!!!!")
} }
} }
} }
} }
println!("{}", depth * pos_h); let result = depth * pos_h;
println!("{}", result);
} }
fn read_lines<P>(filename: P) -> io::Result<io::Lines<io::BufReader<File>>> fn read_lines<P>(filename: P) -> io::Result<io::Lines<io::BufReader<File>>>
where P: AsRef<Path>, { where
P: AsRef<Path>,
{
let file = File::open(filename)?; let file = File::open(filename)?;
Ok(io::BufReader::new(file).lines()) Ok(io::BufReader::new(file).lines())
} }