Completed day 10
This commit is contained in:
parent
21a0815fd7
commit
f5aa9aad9b
313
inputs/10.txt
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313
inputs/10.txt
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||||
position=<-31631, 21317> velocity=< 3, -2>
|
||||
position=< 42532, -31649> velocity=<-4, 3>
|
||||
31
inputs/10_test.txt
Normal file
31
inputs/10_test.txt
Normal file
@ -0,0 +1,31 @@
|
||||
position=< 9, 1> velocity=< 0, 2>
|
||||
position=< 7, 0> velocity=<-1, 0>
|
||||
position=< 3, -2> velocity=<-1, 1>
|
||||
position=< 6, 10> velocity=<-2, -1>
|
||||
position=< 2, -4> velocity=< 2, 2>
|
||||
position=<-6, 10> velocity=< 2, -2>
|
||||
position=< 1, 8> velocity=< 1, -1>
|
||||
position=< 1, 7> velocity=< 1, 0>
|
||||
position=<-3, 11> velocity=< 1, -2>
|
||||
position=< 7, 6> velocity=<-1, -1>
|
||||
position=<-2, 3> velocity=< 1, 0>
|
||||
position=<-4, 3> velocity=< 2, 0>
|
||||
position=<10, -3> velocity=<-1, 1>
|
||||
position=< 5, 11> velocity=< 1, -2>
|
||||
position=< 4, 7> velocity=< 0, -1>
|
||||
position=< 8, -2> velocity=< 0, 1>
|
||||
position=<15, 0> velocity=<-2, 0>
|
||||
position=< 1, 6> velocity=< 1, 0>
|
||||
position=< 8, 9> velocity=< 0, -1>
|
||||
position=< 3, 3> velocity=<-1, 1>
|
||||
position=< 0, 5> velocity=< 0, -1>
|
||||
position=<-2, 2> velocity=< 2, 0>
|
||||
position=< 5, -2> velocity=< 1, 2>
|
||||
position=< 1, 4> velocity=< 2, 1>
|
||||
position=<-2, 7> velocity=< 2, -2>
|
||||
position=< 3, 6> velocity=<-1, -1>
|
||||
position=< 5, 0> velocity=< 1, 0>
|
||||
position=<-6, 0> velocity=< 2, 0>
|
||||
position=< 5, 9> velocity=< 1, -2>
|
||||
position=<14, 7> velocity=<-2, 0>
|
||||
position=<-3, 6> velocity=< 2, -1>
|
||||
1
inputs/10_test_one.txt
Normal file
1
inputs/10_test_one.txt
Normal file
@ -0,0 +1 @@
|
||||
position=< 0, 1> velocity=< 0, 0>
|
||||
247
src/day10.rs
Normal file
247
src/day10.rs
Normal file
@ -0,0 +1,247 @@
|
||||
extern crate regex;
|
||||
|
||||
use std::collections::HashSet;
|
||||
use std::error::Error;
|
||||
use std::fmt;
|
||||
use std::fs;
|
||||
use std::result;
|
||||
use std::str::FromStr;
|
||||
|
||||
use regex::Regex;
|
||||
|
||||
type Result<T> = result::Result<T, Box<Error>>;
|
||||
|
||||
const INPUT: &str = "inputs/10.txt";
|
||||
|
||||
#[derive(Debug, PartialEq, Clone)]
|
||||
struct Vector {
|
||||
x: i32,
|
||||
y: i32,
|
||||
}
|
||||
|
||||
#[derive(Debug, PartialEq)]
|
||||
struct Point {
|
||||
position: Vector,
|
||||
velocity: Vector,
|
||||
}
|
||||
|
||||
impl FromStr for Point {
|
||||
type Err = Box<Error>;
|
||||
|
||||
fn from_str(s: &str) -> Result<Point> {
|
||||
lazy_static! {
|
||||
static ref RE: Regex = Regex::new(concat!(
|
||||
r"position=<(?P<position_x>(\s|-)?\d+), (?P<position_y>(\s|-)?\d+)> ",
|
||||
r"velocity=<(?P<velocity_x>(\s|-)?\d+), (?P<velocity_y>(\s|-)?\d+)>"
|
||||
))
|
||||
.unwrap();
|
||||
}
|
||||
|
||||
let captures = match RE.captures(s) {
|
||||
None => {
|
||||
return Err(From::from("Malformed points, no fields could be found"));
|
||||
}
|
||||
Some(captures) => captures,
|
||||
};
|
||||
|
||||
Ok(Point {
|
||||
position: Vector {
|
||||
x: captures["position_x"].trim_start().parse()?,
|
||||
y: captures["position_y"].trim_start().parse()?,
|
||||
},
|
||||
velocity: Vector {
|
||||
x: captures["velocity_x"].trim_start().parse()?,
|
||||
y: captures["velocity_y"].trim_start().parse()?,
|
||||
},
|
||||
})
|
||||
}
|
||||
}
|
||||
|
||||
#[derive(Debug, PartialEq)]
|
||||
struct Sky {
|
||||
points: Vec<Point>,
|
||||
}
|
||||
|
||||
impl FromStr for Sky {
|
||||
type Err = Box<Error>;
|
||||
|
||||
fn from_str(s: &str) -> Result<Sky> {
|
||||
Ok(Sky {
|
||||
points: s
|
||||
.trim_end()
|
||||
.split('\n')
|
||||
.map(|line| line.parse().unwrap())
|
||||
.collect(),
|
||||
})
|
||||
}
|
||||
}
|
||||
|
||||
impl Sky {
|
||||
fn point_spread(&self) -> (Vector, Vector) {
|
||||
let mut min = self.points[0].position.clone();
|
||||
let mut max = self.points[0].position.clone();
|
||||
|
||||
for point in self.points.iter() {
|
||||
if point.position.x < min.x {
|
||||
min.x = point.position.x;
|
||||
}
|
||||
if point.position.y < min.y {
|
||||
min.y = point.position.y;
|
||||
}
|
||||
if point.position.x > max.x {
|
||||
max.x = point.position.x;
|
||||
}
|
||||
if point.position.y > max.y {
|
||||
max.y = point.position.y;
|
||||
}
|
||||
}
|
||||
|
||||
(min, max)
|
||||
}
|
||||
|
||||
fn move_points(&mut self, seconds: i32) {
|
||||
for point in self.points.iter_mut() {
|
||||
point.position.x += point.velocity.x * seconds;
|
||||
point.position.y += point.velocity.y * seconds;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
impl fmt::Display for Sky {
|
||||
#[allow(clippy::write_with_newline)]
|
||||
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
|
||||
let (min, max) = self.point_spread();
|
||||
let points_set: HashSet<(i32, i32)> = self
|
||||
.points
|
||||
.iter()
|
||||
.map(|point| (point.position.x, point.position.y))
|
||||
.collect();
|
||||
|
||||
for y in min.y..=max.y {
|
||||
for x in min.x..=max.x {
|
||||
if points_set.contains(&(x, y)) {
|
||||
write!(f, "#")?;
|
||||
} else {
|
||||
write!(f, ".")?;
|
||||
}
|
||||
}
|
||||
write!(f, "\n")?;
|
||||
}
|
||||
Ok(())
|
||||
}
|
||||
}
|
||||
|
||||
pub fn solve_parts() -> Result<(String, u32)> {
|
||||
let mut sky = read_points_file(INPUT)?;
|
||||
let (min, max) = sky.point_spread();
|
||||
let mut min_spread = Vector {
|
||||
x: (max.x - min.x).abs(),
|
||||
y: (max.y - min.y).abs(),
|
||||
};
|
||||
let mut seconds = 0;
|
||||
|
||||
loop {
|
||||
sky.move_points(1);
|
||||
let (min, max) = sky.point_spread();
|
||||
let spread_x = (max.x - min.x).abs();
|
||||
let spread_y = (max.y - min.y).abs();
|
||||
|
||||
if spread_x > min_spread.x && spread_y > min_spread.y {
|
||||
sky.move_points(-1);
|
||||
return Ok((format!("{}", &sky), seconds));
|
||||
}
|
||||
|
||||
if spread_x < min_spread.x {
|
||||
min_spread.x = spread_x
|
||||
}
|
||||
if spread_y < min_spread.y {
|
||||
min_spread.y = spread_y
|
||||
}
|
||||
seconds += 1;
|
||||
}
|
||||
}
|
||||
|
||||
fn read_points_file(filename: &str) -> Result<Sky> {
|
||||
let points = fs::read_to_string(filename)?;
|
||||
Ok(points.parse()?)
|
||||
}
|
||||
|
||||
#[cfg(test)]
|
||||
mod tests {
|
||||
use super::*;
|
||||
|
||||
const TEST_INPUT_ONE: &str = "inputs/10_test_one.txt";
|
||||
const TEST_INPUT: &str = "inputs/10_test.txt";
|
||||
const TEST_POINT: Point = Point {
|
||||
position: Vector { x: 0, y: 1 },
|
||||
velocity: Vector { x: 0, y: 0 },
|
||||
};
|
||||
fn test_sky() -> Sky {
|
||||
Sky {
|
||||
points: vec![TEST_POINT],
|
||||
}
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn parses_string_to_point() {
|
||||
let point = "position=< 0, 1> velocity=< 0, 0>";
|
||||
assert_eq!(point.parse::<Point>().unwrap(), TEST_POINT);
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn reads_points_file() {
|
||||
assert_eq!(read_points_file(TEST_INPUT_ONE).unwrap(), test_sky());
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn displays_sky_with_one_point() {
|
||||
assert_eq!(format!("{}", test_sky()), ".\n#\n");
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn displays_sky() {
|
||||
let sky = read_points_file(TEST_INPUT).unwrap();
|
||||
print!("{}", &sky);
|
||||
assert_eq!(
|
||||
format!("{}", sky),
|
||||
concat!(
|
||||
"........#.............\n",
|
||||
"................#.....\n",
|
||||
".........#.#..#.......\n",
|
||||
"......................\n",
|
||||
"#..........#.#.......#\n",
|
||||
"...............#......\n",
|
||||
"....#.................\n",
|
||||
"..#.#....#............\n",
|
||||
".......#..............\n",
|
||||
"......#...............\n",
|
||||
"...#...#.#...#........\n",
|
||||
"....#..#..#.........#.\n",
|
||||
".......#..............\n",
|
||||
"...........#..#.......\n",
|
||||
"#...........#.........\n",
|
||||
"...#.......#..........\n",
|
||||
)
|
||||
);
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn displays_message_in_sky() {
|
||||
let mut sky = read_points_file(TEST_INPUT).unwrap();
|
||||
sky.move_points(3);
|
||||
print!("{}", &sky);
|
||||
assert_eq!(
|
||||
format!("{}", sky),
|
||||
concat!(
|
||||
"#...#..###\n",
|
||||
"#...#...#.\n",
|
||||
"#...#...#.\n",
|
||||
"#####...#.\n",
|
||||
"#...#...#.\n",
|
||||
"#...#...#.\n",
|
||||
"#...#...#.\n",
|
||||
"#...#..###\n",
|
||||
)
|
||||
);
|
||||
}
|
||||
}
|
||||
@ -12,6 +12,7 @@ mod day6;
|
||||
mod day7;
|
||||
mod day8;
|
||||
mod day9;
|
||||
mod day10;
|
||||
|
||||
fn main() {
|
||||
// println!("Day 1:");
|
||||
@ -38,7 +39,11 @@ fn main() {
|
||||
// println!("Day 8:");
|
||||
// println!("{}", day8::solve_part1().unwrap());
|
||||
// println!("{}", day8::solve_part2().unwrap());
|
||||
println!("Day 9:");
|
||||
// println!("Day 9:");
|
||||
// println!("{}", day9::solve_part1().unwrap());
|
||||
println!("{}", day9::solve_part2().unwrap());
|
||||
// println!("{}", day9::solve_part2().unwrap());
|
||||
println!("Day 10:");
|
||||
let parts = day10::solve_parts().unwrap();
|
||||
println!("{}", parts.0);
|
||||
println!("{}", parts.1);
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue
Block a user