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feat: Day 1

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Jan-Bulthuis 2025-12-01 06:21:24 +01:00
parent f5788b2825
commit 91d9d7b1dc
7 changed files with 368 additions and 1 deletions
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3
.gitignore vendored
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*/target/ */target/
*/input/ */input/
*.out *.out
.direnv

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aoc_2025/Cargo.lock generated Normal file
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aoc_2025/Cargo.toml Normal file
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[package]
name = "aoc_2025"
version = "0.1.0"
edition = "2024"
[dependencies]
hashbrown = "0.16.1"
num = "0.4.3"
num-modular = "0.6.1"
topological-sort = "0.2.2"
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aoc_2025/README.md Normal file
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```bash
bacon test -- dayN
```

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aoc_2025/src/day1.rs Normal file
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use crate::AoC;
use winnow::{
Parser, Result,
ascii::{digit1, multispace0},
combinator::{alt, preceded, repeat},
};
type Parsed = Vec<Side>;
enum Side {
Left(i64),
Right(i64),
}
const AOC: AoC<Parsed> = AoC::new(parse, part1, part2);
fn parse(input: String) -> Parsed {
let mut input: &str = input.as_str();
repeat(1.., parse_line).parse_next(&mut input).unwrap()
}
fn parse_line(input: &mut &str) -> Result<Side> {
preceded(multispace0, alt((parse_left, parse_right))).parse_next(input)
}
fn parse_left(input: &mut &str) -> Result<Side> {
preceded("L", digit1.parse_to())
.map(Side::Left)
.parse_next(input)
}
fn parse_right(input: &mut &str) -> Result<Side> {
preceded("R", digit1.parse_to())
.map(Side::Right)
.parse_next(input)
}
fn part1(input: &Parsed) -> String {
let mut res = 0;
let mut pos = 50i64;
for change in input {
match change {
Side::Left(dx) => pos = (pos + 100 - dx) % 100,
Side::Right(dx) => pos = (pos + dx) % 100,
}
if pos == 0 {
res += 1
}
}
format!("{res}")
}
fn part2(input: &Parsed) -> String {
let input = input
.iter()
.flat_map(|side| match side {
Side::Left(dx) => (0..*dx).map(|i| Side::Left(1)).collect::<Vec<Side>>(),
Side::Right(dx) => (0..*dx).map(|i| Side::Right(1)).collect::<Vec<Side>>(),
})
.collect::<Vec<Side>>();
let mut res = 0;
let mut pos = 50i64;
for change in input {
match change {
Side::Left(dx) => pos = (pos + 100 - dx) % 100,
Side::Right(dx) => pos = (pos + dx) % 100,
}
if pos == 0 {
res += 1
}
}
format!("{res}")
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn part1_test() {
AOC.assert1(
"L68
L30
R48
L5
R60
L55
L1
L99
R14
L82",
"3",
);
}
#[test]
fn part1_solve() {
AOC.assert1(include_str!("../input/day1.txt"), "982");
}
#[test]
fn part2_test() {
AOC.assert2(
"L68
L30
R48
L5
R60
L55
L1
L99
R14
L82",
"6",
);
}
#[test]
fn part2_solve() {
AOC.assert2(include_str!("../input/day1.txt"), "6106");
}
}

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aoc_2025/src/lib.rs Normal file
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#![allow(dead_code)]
#![allow(unused)]
mod day1;
struct AoC<T> {
parse: fn(String) -> T,
part1: fn(&T) -> String,
part2: fn(&T) -> String,
}
impl<T> AoC<T> {
const fn new(parse: fn(String) -> T, part1: fn(&T) -> String, part2: fn(&T) -> String) -> Self {
Self {
parse,
part1,
part2,
}
}
fn assert1(&self, input: &str, output: &str) {
let parsed = (self.parse)(input.into());
assert_eq!((self.part1)(&parsed), output);
}
fn assert2(&self, input: &str, output: &str) {
let parsed = (self.parse)(input.into());
assert_eq!((self.part2)(&parsed), output);
}
fn apply(&self, input: &str) {
let parsed = (self.parse)(input.into());
println!("Part 1: {}", (self.part1)(&parsed));
println!("Part 2: {}", (self.part2)(&parsed));
}
}

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aoc_2025/src/template.rs Normal file
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use crate::AoC;
use winnow::{Parser, Result};
type Parsed = String;
const AOC: AoC<Parsed> = AoC::new(parse, part1, part2);
fn parse(input: String) -> Parsed {
let mut input: &str = input.as_str();
String::new()
}
fn part1(input: &Parsed) -> String {
let res = 0;
format!("{res}")
}
fn part2(input: &Parsed) -> String {
let res = 0;
format!("{res}")
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn part1_test() {
AOC.assert1("", "");
}
#[test]
fn part1_solve() {
AOC.assert1(include_str!("../input/day1.txt"), "");
}
// #[test]
// fn part2_test() {
// AOC.assert2("", "");
// }
// #[test]
// fn part2_solve() {
// AOC.assert2(include_str!("../input/day1.txt"), "");
// }
}