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cargo fmt

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Daniel S. 2020-12-03 15:10:04 +01:00
parent 0bb5d960e5
commit 336a03055d
5 changed files with 187 additions and 168 deletions
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43
src/day1.rs
View file

@ -1,37 +1,46 @@
use aoc_runner_derive::{aoc,aoc_generator};
use aoc_runner_derive::{aoc, aoc_generator};
#[aoc_generator(day1)]
pub fn input_generator(input: &str) -> Vec<usize> {
input.lines().map(|l| l.trim().parse()).collect::<Result<Vec<usize>,_>>().unwrap()
input
.lines()
.map(|l| l.trim().parse())
.collect::<Result<Vec<usize>, _>>()
.unwrap()
}
#[aoc(day1, part1)]
pub fn solve_part1(input: &Vec<usize>) -> usize {
let mut input=input.clone();
let mut input = input.clone();
input.sort();
for (i1,v1) in input.iter().enumerate() {
if v1>&2020 {break;}
for v2 in input.iter().skip(i1+1) {
if (v1+v2)==2020 {
return v1*v2;
for (i1, v1) in input.iter().enumerate() {
if v1 > &2020 {
break;
}
for v2 in input.iter().skip(i1 + 1) {
if (v1 + v2) == 2020 {
return v1 * v2;
}
}
}
panic!("No pair summed to 20202!");
}
#[aoc(day1, part2)]
pub fn solve_part2(input: &Vec<usize>) -> usize {
let mut input=input.clone();
let mut input = input.clone();
input.sort();
for (i1,v1) in input.iter().enumerate() {
if v1>&2020 {break;}
for (i2,v2) in input.iter().enumerate().skip(i1+1) {
if (v1+v2)>2020 {break;}
for v3 in input.iter().skip(i2+1) {
if (v1+v2+v3)==2020 {
return v1*v2*v3;
for (i1, v1) in input.iter().enumerate() {
if v1 > &2020 {
break;
}
for (i2, v2) in input.iter().enumerate().skip(i1 + 1) {
if (v1 + v2) > 2020 {
break;
}
for v3 in input.iter().skip(i2 + 1) {
if (v1 + v2 + v3) == 2020 {
return v1 * v2 * v3;
}
}
}

71
src/day2.rs
View file

@ -1,68 +1,75 @@
use aoc_runner_derive::{aoc,aoc_generator};
use aoc_runner_derive::{aoc, aoc_generator};
#[derive(Debug,PartialEq,Eq,Ord,PartialOrd)]
#[derive(Debug, PartialEq, Eq, Ord, PartialOrd)]
pub struct Rule {
min: usize,
max: usize,
ch: char,
pw: String
pw: String,
}
impl Rule {
fn is_valid_part1(&self) -> bool {
let n=self.pw.chars().filter(|c| *c==self.ch).count();
return n>=self.min && n<=self.max;
let n = self.pw.chars().filter(|c| *c == self.ch).count();
return n >= self.min && n <= self.max;
}
fn is_valid_part2(&self) -> bool {
let idx_1=self.min-1;
let idx_2=self.max-1;
let idx_1 = self.min - 1;
let idx_2 = self.max - 1;
let chars: Vec<char> = self.pw.chars().collect();
return (chars.get(idx_1)==Some(&self.ch))^(chars.get(idx_2)==Some(&self.ch))
return (chars.get(idx_1) == Some(&self.ch)) ^ (chars.get(idx_2) == Some(&self.ch));
}
}
#[aoc_generator(day2)]
pub fn input_generator(input: &str) -> Vec<Rule> {
input.lines().map(|l| {
let mut ws = l.trim().split_whitespace();
let range= ws.next().unwrap();
let ch= ws.next().unwrap().trim_end_matches(|c| c==':').chars().next().unwrap();
let pw= ws.next().unwrap().to_owned();
let (r_min, r_max) = {
let mut r=range.split('-');
let r_min=r.next().unwrap().parse().unwrap();
let r_max=r.next().unwrap().parse().unwrap();
(r_min,r_max)
};
Rule {
min:r_min,
max:r_max,
ch,
pw
}
}).collect::<Vec<Rule>>()
input
.lines()
.map(|l| {
let mut ws = l.trim().split_whitespace();
let range = ws.next().unwrap();
let ch = ws
.next()
.unwrap()
.trim_end_matches(|c| c == ':')
.chars()
.next()
.unwrap();
let pw = ws.next().unwrap().to_owned();
let (r_min, r_max) = {
let mut r = range.split('-');
let r_min = r.next().unwrap().parse().unwrap();
let r_max = r.next().unwrap().parse().unwrap();
(r_min, r_max)
};
Rule {
min: r_min,
max: r_max,
ch,
pw,
}
})
.collect::<Vec<Rule>>()
}
#[aoc(day2, part1)]
pub fn solve_part1(input: &Vec<Rule>) -> usize {
let mut total=0;
let mut total = 0;
for rule in input {
if rule.is_valid_part1() {
total+=1;
total += 1;
}
}
total
}
#[aoc(day2, part2)]
pub fn solve_part2(input: &Vec<Rule>) -> usize {
let mut total=0;
let mut total = 0;
for rule in input {
if rule.is_valid_part2() {
total+=1;
total += 1;
}
}
total
}

61
src/day3.rs
View file

@ -1,54 +1,57 @@
use aoc_runner_derive::{aoc,aoc_generator};
use aoc_runner_derive::{aoc, aoc_generator};
pub struct Forest {
slice: Vec<Vec<bool>>,
}
impl Forest {
fn get(&self, x: usize,y: usize) -> Option<bool> {
self.slice.get(y).map(|line| line.get(x%line.len())).flatten().cloned()
fn get(&self, x: usize, y: usize) -> Option<bool> {
self.slice
.get(y)
.map(|line| line.get(x % line.len()))
.flatten()
.cloned()
}
}
#[aoc_generator(day3)]
pub fn input_generator(input: &str) -> Forest {
let slice=input.lines().map(|l| l.chars().map(|c| c=='#').collect()).collect();
Forest{
slice
}
let slice = input
.lines()
.map(|l| l.chars().map(|c| c == '#').collect())
.collect();
Forest { slice }
}
#[aoc(day3,part1)]
#[aoc(day3, part1)]
pub fn solve_part1(input: &Forest) -> usize {
let mut sum: usize=0;
let dx=3;
let dy=1;
let mut pos=(0,0);
while let Some(tree) = input.get(pos.0,pos.1) {
let mut sum: usize = 0;
let dx = 3;
let dy = 1;
let mut pos = (0, 0);
while let Some(tree) = input.get(pos.0, pos.1) {
if tree {
sum+=1;
sum += 1;
}
pos.0+=dx;
pos.1+=dy;
};
pos.0 += dx;
pos.1 += dy;
}
sum
}
#[aoc(day3,part2)]
#[aoc(day3, part2)]
pub fn solve_part2(input: &Forest) -> usize {
let mut prod: usize = 1;
for (dx,dy) in &[(1,1),(3,1),(5,1),(7,1),(1,2)] {
let mut sum: usize=0;
let mut pos=(0,0);
while let Some(tree) = input.get(pos.0,pos.1) {
for (dx, dy) in &[(1, 1), (3, 1), (5, 1), (7, 1), (1, 2)] {
let mut sum: usize = 0;
let mut pos = (0, 0);
while let Some(tree) = input.get(pos.0, pos.1) {
if tree {
sum+=1;
sum += 1;
}
pos.0+=dx;
pos.1+=dy;
};
prod*=sum;
pos.0 += dx;
pos.1 += dy;
}
prod *= sum;
}
prod
}