day 10 solution
parent
93e8aef6c0
commit
50eefc8230
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@ -0,0 +1,95 @@
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[[package]]
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name = "aho-corasick"
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name = "memchr"
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@ -0,0 +1,8 @@
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[package]
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name = "day10"
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version = "0.1.0"
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authors = ["Andrew Coleman <penguincoder@gmail.com>"]
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edition = "2018"
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[dependencies]
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regex = "1"
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@ -0,0 +1,334 @@
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|
||||
position=< 11115, 32854> velocity=<-1, -3>
|
||||
position=< 11116, 11077> velocity=<-1, -1>
|
||||
position=<-32441, 54637> velocity=< 3, -5>
|
||||
position=< 43746, -10692> velocity=<-4, 1>
|
||||
position=< 21964, -32470> velocity=<-2, 3>
|
||||
position=<-32473, -43356> velocity=< 3, 4>
|
||||
position=<-10697, -54246> velocity=< 1, 5>
|
||||
position=<-21569, 54637> velocity=< 2, -5>
|
||||
position=< 54656, -10698> velocity=<-5, 1>
|
||||
position=<-54217, 54632> velocity=< 5, -5>
|
||||
position=<-32439, 21971> velocity=< 3, -2>
|
||||
position=< 11107, 32854> velocity=<-1, -3>
|
||||
position=<-54215, -10696> velocity=< 5, 1>
|
||||
position=<-10646, 32857> velocity=< 1, -3>
|
||||
position=<-32444, 32862> velocity=< 3, -3>
|
||||
position=<-21593, 11084> velocity=< 2, -1>
|
||||
position=< 32882, -32475> velocity=<-3, 3>
|
||||
position=<-54248, -43358> velocity=< 5, 4>
|
||||
position=< 32851, 11081> velocity=<-3, -1>
|
||||
position=<-10700, 43743> velocity=< 1, -4>
|
||||
position=<-21565, 32853> velocity=< 2, -3>
|
||||
position=<-32447, -21582> velocity=< 3, 2>
|
||||
position=<-43349, 54636> velocity=< 4, -5>
|
||||
position=< 54676, -54249> velocity=<-5, 5>
|
||||
position=< 32897, -10699> velocity=<-3, 1>
|
||||
position=<-43316, -54247> velocity=< 4, 5>
|
||||
position=<-21593, -32471> velocity=< 2, 3>
|
||||
position=< 43740, -10695> velocity=<-4, 1>
|
||||
position=<-43312, 43745> velocity=< 4, -4>
|
||||
position=< 21999, -43356> velocity=<-2, 4>
|
||||
position=<-54220, 32860> velocity=< 5, -3>
|
||||
position=< 22015, -32469> velocity=<-2, 3>
|
||||
position=< 21980, 43741> velocity=<-2, -4>
|
||||
position=< 32884, 11080> velocity=<-3, -1>
|
||||
position=< 43760, -21587> velocity=<-4, 2>
|
||||
position=<-43349, 32858> velocity=< 4, -3>
|
||||
position=< 21991, -21579> velocity=<-2, 2>
|
||||
position=<-43353, -43355> velocity=< 4, 4>
|
||||
position=<-32421, -21583> velocity=< 3, 2>
|
||||
position=< 43788, -21578> velocity=<-4, 2>
|
||||
position=<-54233, -21587> velocity=< 5, 2>
|
||||
position=< 43788, -43355> velocity=<-4, 4>
|
||||
position=<-54225, 54636> velocity=< 5, -5>
|
||||
position=<-54225, -32471> velocity=< 5, 3>
|
||||
position=< 54631, -32473> velocity=<-5, 3>
|
||||
position=< 11111, 21970> velocity=<-1, -2>
|
||||
position=<-21550, -21580> velocity=< 2, 2>
|
||||
position=<-32456, 32853> velocity=< 3, -3>
|
||||
position=<-43327, -43360> velocity=< 4, 4>
|
||||
position=<-10685, -10691> velocity=< 1, 1>
|
||||
position=< 43759, 32856> velocity=<-4, -3>
|
||||
position=< 32887, 21969> velocity=<-3, -2>
|
||||
position=< 43743, -32473> velocity=<-4, 3>
|
||||
position=< 32847, 54635> velocity=<-3, -5>
|
||||
position=<-54198, -32475> velocity=< 5, 3>
|
||||
position=<-21545, -43359> velocity=< 2, 4>
|
||||
position=< 22007, -32471> velocity=<-2, 3>
|
||||
position=<-21537, -43363> velocity=< 2, 4>
|
||||
position=< 21994, -21587> velocity=<-2, 2>
|
||||
position=< 54623, -54250> velocity=<-5, 5>
|
||||
position=< 21983, -21583> velocity=<-2, 2>
|
||||
position=<-21556, -10692> velocity=< 2, 1>
|
||||
position=< 54628, 11080> velocity=<-5, -1>
|
||||
position=< 11127, -54242> velocity=<-1, 5>
|
||||
position=< 11079, -54250> velocity=<-1, 5>
|
||||
position=< 43767, -43354> velocity=<-4, 4>
|
||||
position=< 32884, 21969> velocity=<-3, -2>
|
||||
position=< 54631, 21966> velocity=<-5, -2>
|
||||
position=< 11132, -32475> velocity=<-1, 3>
|
||||
position=<-10645, 21965> velocity=< 1, -2>
|
||||
position=<-10697, 54629> velocity=< 1, -5>
|
||||
position=< 11115, 43749> velocity=<-1, -4>
|
||||
position=< 54676, 32857> velocity=<-5, -3>
|
||||
position=<-21533, -10695> velocity=< 2, 1>
|
||||
position=<-32455, -10699> velocity=< 3, 1>
|
||||
position=<-10649, -32474> velocity=< 1, 3>
|
||||
position=<-21569, -21581> velocity=< 2, 2>
|
||||
position=< 32863, -54244> velocity=<-3, 5>
|
||||
position=<-32425, -43362> velocity=< 3, 4>
|
||||
position=<-10652, 54632> velocity=< 1, -5>
|
||||
position=< 43792, 11077> velocity=<-4, -1>
|
||||
position=< 21996, 21973> velocity=<-2, -2>
|
||||
position=<-21556, -10696> velocity=< 2, 1>
|
||||
position=<-10700, -54242> velocity=< 1, 5>
|
||||
position=< 54672, -43358> velocity=<-5, 4>
|
||||
position=<-10660, 54638> velocity=< 1, -5>
|
||||
position=<-21560, 54634> velocity=< 2, -5>
|
||||
position=<-10697, -10695> velocity=< 1, 1>
|
||||
position=< 11079, 32854> velocity=<-1, -3>
|
||||
position=<-54220, -10694> velocity=< 5, 1>
|
||||
position=<-54252, -10694> velocity=< 5, 1>
|
||||
position=< 43759, 54631> velocity=<-4, -5>
|
||||
position=<-54249, 11083> velocity=< 5, -1>
|
||||
position=< 21979, 11079> velocity=<-2, -1>
|
||||
position=< 21983, 54629> velocity=<-2, -5>
|
||||
position=<-54257, 43750> velocity=< 5, -4>
|
||||
position=< 32852, 11084> velocity=<-3, -1>
|
||||
position=< 32852, 32853> velocity=<-3, -3>
|
||||
position=<-21585, -43358> velocity=< 2, 4>
|
||||
position=<-54244, -32475> velocity=< 5, 3>
|
||||
position=< 21983, 21974> velocity=<-2, -2>
|
||||
position=< 32871, -54242> velocity=<-3, 5>
|
||||
position=< 21991, -43357> velocity=<-2, 4>
|
||||
position=<-54248, 54634> velocity=< 5, -5>
|
||||
position=< 32882, -21587> velocity=<-3, 2>
|
||||
position=< 43796, -10699> velocity=<-4, 1>
|
||||
position=< 11114, -21580> velocity=<-1, 2>
|
||||
position=<-10688, -21578> velocity=< 1, 2>
|
||||
position=<-10700, 11082> velocity=< 1, -1>
|
||||
position=<-43327, 11080> velocity=< 4, -1>
|
||||
position=< 54660, -43357> velocity=<-5, 4>
|
||||
position=< 11099, 21969> velocity=<-1, -2>
|
||||
position=<-43353, -54244> velocity=< 4, 5>
|
||||
position=<-10653, 43742> velocity=< 1, -4>
|
||||
position=< 21994, -10694> velocity=<-2, 1>
|
||||
position=< 43740, -10691> velocity=<-4, 1>
|
||||
position=< 32871, -10695> velocity=<-3, 1>
|
||||
position=< 32900, 54635> velocity=<-3, -5>
|
||||
position=<-21545, -21578> velocity=< 2, 2>
|
||||
position=< 43767, 11081> velocity=<-4, -1>
|
||||
position=<-54244, -32475> velocity=< 5, 3>
|
||||
position=<-32454, -21587> velocity=< 3, 2>
|
||||
position=<-32422, -21587> velocity=< 3, 2>
|
||||
position=<-43361, -32468> velocity=< 4, 3>
|
||||
|
|
@ -0,0 +1,102 @@
|
|||
extern crate regex;
|
||||
|
||||
use regex::Regex;
|
||||
use std::collections::HashSet;
|
||||
use std::fs::File;
|
||||
use std::io::{BufRead, BufReader};
|
||||
use std::iter::Iterator;
|
||||
|
||||
#[derive(Debug)]
|
||||
struct Point {
|
||||
x: i32,
|
||||
y: i32,
|
||||
x_velocity: i32,
|
||||
y_velocity: i32
|
||||
}
|
||||
|
||||
fn bounding_box(points: &Vec<Point>) -> (i32, i32, i32, i32) {
|
||||
let mut min_x = std::i32::MAX;
|
||||
let mut min_y = std::i32::MAX;
|
||||
let mut max_x = std::i32::MIN;
|
||||
let mut max_y = std::i32::MIN;
|
||||
|
||||
for p in points.iter() {
|
||||
if min_x > p.x { min_x = p.x };
|
||||
if min_y > p.y { min_y = p.y };
|
||||
if max_x < p.x { max_x = p.x };
|
||||
if max_y < p.y { max_y = p.y };
|
||||
}
|
||||
|
||||
(min_x, min_y, max_x, max_y)
|
||||
}
|
||||
|
||||
fn tick(points: &mut Vec<Point>) -> i32 {
|
||||
let mut seconds = 0;
|
||||
let mut old_height = std::i32::MAX;
|
||||
|
||||
loop {
|
||||
let (_min_x, min_y, _max_x, max_y) = bounding_box(points);
|
||||
let new_height = max_y - min_y;
|
||||
if new_height > old_height {
|
||||
for p in points.iter_mut() {
|
||||
p.x -= p.x_velocity;
|
||||
p.y -= p.y_velocity;
|
||||
}
|
||||
seconds -= 1;
|
||||
break;
|
||||
}
|
||||
|
||||
old_height = new_height;
|
||||
seconds += 1;
|
||||
for p in points.iter_mut() {
|
||||
p.x += p.x_velocity;
|
||||
p.y += p.y_velocity;
|
||||
}
|
||||
}
|
||||
|
||||
let (min_x, min_y, max_x, max_y) = bounding_box(points);
|
||||
println!("final bounding box: ({}, {}) ({}, {})", min_x, min_y, max_x, max_y);
|
||||
let mut final_set = HashSet::with_capacity(points.len());
|
||||
for p in points.iter() {
|
||||
final_set.insert((p.x, p.y));
|
||||
}
|
||||
|
||||
for j in min_y..=max_y {
|
||||
for i in min_x..=max_x {
|
||||
if final_set.contains(&(i, j)) {
|
||||
print!("#")
|
||||
} else {
|
||||
print!(".")
|
||||
};
|
||||
}
|
||||
println!("");
|
||||
}
|
||||
|
||||
seconds
|
||||
}
|
||||
|
||||
fn main() {
|
||||
let lines: Vec<String> = BufReader::new(File::open("input").unwrap())
|
||||
.lines()
|
||||
.map(|line| line.unwrap())
|
||||
.collect();
|
||||
let mut points: Vec<Point> = Vec::with_capacity(lines.len());
|
||||
let re = Regex::new(r"^position=<([-| ]\d+), ([-| ]\d+)> velocity=<([-| ]\d), ([-| ]\d)>$").unwrap();
|
||||
for line in lines.iter() {
|
||||
if re.is_match(line) {
|
||||
let cap = re.captures(line).unwrap();
|
||||
let x = cap[1].trim_start().parse::<i32>().unwrap();
|
||||
let y = cap[2].trim_start().parse::<i32>().unwrap();
|
||||
let x_velocity = cap[3].trim_start().parse::<i32>().unwrap();
|
||||
let y_velocity = cap[4].trim_start().parse::<i32>().unwrap();
|
||||
points.push(Point {
|
||||
x,
|
||||
y,
|
||||
x_velocity,
|
||||
y_velocity
|
||||
});
|
||||
}
|
||||
}
|
||||
let seconds = tick(&mut points);
|
||||
println!("time elapsed: {}", seconds);
|
||||
}
|
||||
Loading…
Reference in New Issue