johannes/advent-of-rust-2024
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cleanup

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Johannes
2024-12-03 06:25:49 +01:00
parent 328d695e30
commit f872d60381
1 changed files with 6 additions and 13 deletions
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19
src/day03.rs
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@@ -11,15 +11,11 @@ pub fn day_main() {
type RiddleResult = i64; type RiddleResult = i64;
fn part1(input: &str) -> RiddleResult { fn part1(input: &str) -> RiddleResult {
let r = regex::Regex::new(r"mul\(\d{1,3},\d{1,3}\)").unwrap(); let r = regex::Regex::new(r"mul\((\d{1,3}),(\d{1,3})\)").unwrap();
r.captures_iter(input) r.captures_iter(input)
.map(|c| { .map(|c| {
let s = c.get(0).unwrap().as_str(); let a: i64 = c.get(1).unwrap().as_str().parse().unwrap();
println!("{s}"); let b: i64 = c.get(2).unwrap().as_str().parse().unwrap();
let x = s.strip_prefix("mul(").unwrap().strip_suffix(")").unwrap();
let (a, b) = x.split_once(',').unwrap();
let a: i64 = a.parse().unwrap();
let b: i64 = b.parse().unwrap();
a * b a * b
}) })
.sum() .sum()
@@ -32,21 +28,18 @@ enum Statement {
} }
fn part2(input: &str) -> RiddleResult { fn part2(input: &str) -> RiddleResult {
let r = regex::Regex::new(r"do\(\)|don't\(\)|mul\(\d{1,3},\d{1,3}\)").unwrap(); let r = regex::Regex::new(r"do\(\)|don't\(\)|mul\((\d{1,3}),(\d{1,3})\)").unwrap();
let statements = r let statements = r
.captures_iter(input) .captures_iter(input)
.map(|c| { .map(|c| {
let s = c.get(0).unwrap().as_str(); let s = c.get(0).unwrap().as_str();
println!("{s}");
match s { match s {
"do()" => Statement::Enable, "do()" => Statement::Enable,
"don't()" => Statement::Disable, "don't()" => Statement::Disable,
_ => { _ => {
let x = s.strip_prefix("mul(").unwrap().strip_suffix(")").unwrap(); let a: i64 = c.get(1).unwrap().as_str().parse().unwrap();
let (a, b) = x.split_once(',').unwrap(); let b: i64 = c.get(2).unwrap().as_str().parse().unwrap();
let a: i64 = a.parse().unwrap();
let b: i64 = b.parse().unwrap();
Statement::Number(a * b) Statement::Number(a * b)
} }
} }