This commit is contained in:
Rh4096 2024-12-02 23:23:48 +07:00
parent f20f8c9018
commit be9ade3ca0
4 changed files with 135 additions and 55 deletions

View file

@ -1,5 +1 @@
use aoc2024::solutions::day_1::part_two;
fn main() {
println!("{}", part_two());
}
fn main() {}

View file

@ -1,9 +1,16 @@
use std::collections::HashMap;
const INPUT: &str = include_str!("../../input/day1.txt");
use super::AocSolution;
pub fn part_one() -> u64 {
let (mut left, mut right) = INPUT
#[derive(Clone, Copy)]
pub struct AocDayOneSolution;
impl AocSolution for AocDayOneSolution {
type Output = u64;
const INPUT: &str = include_str!("../../input/day1.txt");
fn part_one(&self) -> Self::Output {
let (mut left, mut right) = Self::INPUT
.lines()
.filter_map(|s| s.split_once(' ').map(|(s, x)| (s.trim(), x.trim())))
.filter_map(
@ -25,13 +32,12 @@ pub fn part_one() -> u64 {
.zip(right)
.map(|(l, r)| if l > r { l - r } else { r - l })
.sum()
}
pub fn part_two() -> u64 {
}
fn part_two(&self) -> Self::Output {
let mut cache = HashMap::<u64, u64>::new();
let mut similarity_score = 0;
let (left, right) = INPUT
let (left, right) = Self::INPUT
.lines()
.filter_map(|s| s.split_once(' ').map(|(s, x)| (s.trim(), x.trim())))
.filter_map(
@ -57,4 +63,5 @@ pub fn part_two() -> u64 {
}
similarity_score
}
}

68
src/solutions/day_2.rs Normal file
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@ -0,0 +1,68 @@
use super::AocSolution;
#[derive(Clone, Copy)]
pub struct AocDayTwoSolution;
struct LevelValidator;
impl LevelValidator {
fn is_safe(&self, levels: &[i32]) -> bool {
let dec = levels[0] > levels[1];
for (cur, nxt) in levels.windows(2).map(|w| (w[0], w[1])) {
let diff = cur - nxt;
if diff == 0 || diff.abs() > 3 || (diff > 0) != dec {
return false;
}
}
true
}
fn is_safe_with_rem(&self, levels: &[i32]) -> bool {
for i in 0..levels.len() {
let mut lvl = levels[0..i].to_vec();
lvl.extend_from_slice(&levels[(i + 1)..]);
if self.is_safe(&lvl) {
return true;
}
}
false
}
}
impl AocSolution for AocDayTwoSolution {
type Output = usize;
const INPUT: &str = include_str!("../../input/day2.txt");
fn part_one(&self) -> Self::Output {
let validator = LevelValidator;
Self::INPUT
.lines()
.map(|n| {
n.split_whitespace()
.filter_map(|x| x.parse::<i32>().ok())
.collect::<Vec<_>>()
})
.filter(|s| validator.is_safe(s))
.count()
}
fn part_two(&self) -> Self::Output {
let validator = LevelValidator;
Self::INPUT
.lines()
.map(|n| {
n.split_whitespace()
.filter_map(|x| x.parse::<i32>().ok())
.collect::<Vec<_>>()
})
.filter(|s| validator.is_safe(s) || validator.is_safe_with_rem(s))
.count()
}
}

View file

@ -1 +1,10 @@
pub mod day_1;
pub mod day_2;
pub trait AocSolution {
type Output;
const INPUT: &str;
fn part_one(&self) -> Self::Output;
fn part_two(&self) -> Self::Output;
}