Rakarake/aoc2
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

2025 day1 par2

Browse source
This commit is contained in:
Rakarake 2025-12-01 15:37:00 +01:00
parent 1f2d6a2d01
commit ab95fe9024
1 changed files with 54 additions and 18 deletions
Download patch file Download diff file Expand all files Collapse all files

72
aoc2025/day1.rs
View file

@ -1,7 +1,6 @@
use utils::load_string;
const TEST_INPUT: &str =
"L68
const TEST_INPUT: &str = "L68
L30
R48
L5
@ -12,7 +11,7 @@ L99
R14
L82";
const START: u32 = 50;
const START: i32 = 50;
enum Rotation {
Left(u32),
@ -20,41 +19,78 @@ enum Rotation {
}
fn parse(input: &str) -> Vec<Rotation> {
input.lines().map(|l| {
input
.lines()
.map(|l| {
let (indicator, number) = l.split_at(1);
match indicator {
"L" => Rotation::Left(number.parse().unwrap()),
"R" => Rotation::Right(number.parse().unwrap()),
_ => panic!("hey!")
_ => panic!("hey!"),
}
}).collect()
})
.collect()
}
fn gaby() -> (u32, u32) {
let input = TEST_INPUT;
let input = &load_string("inputs/2025/day1.input");
//let input = TEST_INPUT;
let mut current_rotation = START;
let mut result_part1: u32 = 0;
let mut result_part2: u32 = 0;
for roation in parse(input).iter() {
match roation {
Rotation::Left(amount) => {
// overflows to the left
let new = (current_rotation as i32) - *amount as i32;
current_rotation = new.rem_euclid(100) as u32;
result_part2 += ((new.abs() + if new < 0 {100} else {0}) / 100) as u32;
},
Rotation::Right(amount) => {
// overflows to the right
let new = (current_rotation as i32) + *amount as i32;
current_rotation = new.rem_euclid(100) as u32;
result_part2 += (new / 100) as u32;
},
for _ in 0..*amount {
current_rotation -= 1;
if current_rotation < 0 {
current_rotation = 99;
}
if current_rotation == 0 {
result_part2 += 1;
}
}
}
Rotation::Right(amount) => {
for _ in 0..*amount {
current_rotation += 1;
if current_rotation >= 100 {
current_rotation = 0;
}
if current_rotation == 0 {
result_part2 += 1;
}
}
}
}
if current_rotation == 0 {
result_part1 += 1;
}
}
//for roation in parse(input).iter() {
// match roation {
// Rotation::Left(amount) => {
// // overflows to the left
// let new = (current_rotation as i32) - *amount as i32;
// result_part2 += (((new.abs() + if new <= 0 { 100 } else { 0 }) / 100)
// + if current_rotation == 0 { -1 } else { 0 })
// .max(0) as u32;
// current_rotation = new.rem_euclid(100) as u32;
// }
// Rotation::Right(amount) => {
// // overflows to the right
// let new = (current_rotation as i32) + *amount as i32;
// result_part2 +=
// ((new / 100) + if current_rotation == 0 { -1 } else { 0 }).max(0) as u32;
// current_rotation = new.rem_euclid(100) as u32;
// }
// }
// if current_rotation == 0 {
// result_part1 += 1;
// }
//}
(result_part1, result_part2)
}