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Day 11 complete

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Cassandra de la Cruz-Munoz 2023-12-11 14:00:40 +01:00
parent f09ab515bb
commit 31cdd8b327
2 changed files with 163 additions and 0 deletions
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86
src/11part1.rs Normal file
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use std::fs;
#[derive(Eq, PartialEq, Hash, Copy, Clone, Debug)]
struct Coordinate {
x: usize,
y: usize,
}
fn main() {
let file_path = "input/11input.txt";
let contents = fs::read_to_string(file_path).expect("should read file");
let mut lines = contents.lines();
let mut matrix: Vec<Vec<char>> = Vec::new();
loop {
match lines.next() {
Some(line) => {
matrix.push(line.chars().collect());
},
None => break,
}
}
let mut matrix_expanded: Vec<Vec<char>> = Vec::new();
let mut matrix_expanded_full: Vec<Vec<char>> = Vec::new();
for y in 0..matrix.len() {
let mut has_galaxy = false;
for x in 0..matrix[y].len() {
has_galaxy = has_galaxy || matrix[y][x] == '#';
}
if !has_galaxy {
matrix_expanded.push(matrix[y].to_owned());
matrix_expanded.push(matrix[y].to_owned());
matrix_expanded_full.push(Vec::new());
matrix_expanded_full.push(Vec::new());
} else {
matrix_expanded.push(matrix[y].to_owned());
matrix_expanded_full.push(Vec::new());
}
}
for x in 0..matrix_expanded[0].len() {
let mut has_galaxy = false;
for y in 0..matrix_expanded.len() {
has_galaxy = has_galaxy || matrix_expanded[y][x] == '#';
}
if has_galaxy {
for y in 0..matrix_expanded.len() {
matrix_expanded_full[0].push(matrix_expanded[y][x]);
matrix_expanded_full.push(matrix_expanded_full[0].to_owned());
matrix_expanded_full.remove(0);
}
} else {
for _y in 0..matrix_expanded.len() {
matrix_expanded_full[0].push('.');
matrix_expanded_full[0].push('.');
matrix_expanded_full.push(matrix_expanded_full[0].to_owned());
matrix_expanded_full.remove(0);
}
}
}
let mut coordinates = Vec::new();
for y in 0..matrix_expanded_full.len() {
for x in 0..matrix_expanded_full[y].len() {
if matrix_expanded_full[y][x] == '#' {
coordinates.push(Coordinate{x, y});
}
}
}
let mut sum = 0;
for a in 0..coordinates.len()-1 {
for b in a+1..coordinates.len() {
if coordinates[a].x > coordinates[b].x {
if coordinates[a].y > coordinates[b].y {
sum += coordinates[a].x - coordinates[b].x + coordinates[a].y - coordinates[b].y;
} else {
sum += coordinates[a].x - coordinates[b].x + coordinates[b].y - coordinates[a].y;
}
} else {
if coordinates[a].y > coordinates[b].y {
sum += coordinates[b].x - coordinates[a].x + coordinates[a].y - coordinates[b].y;
} else {
sum += coordinates[b].x - coordinates[a].x + coordinates[b].y - coordinates[a].y;
}
}
}
}
println!("{}", sum);
}

77
src/11part2.rs Normal file
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use std::fs;
#[derive(Eq, PartialEq, Hash, Copy, Clone, Debug)]
struct Coordinate {
x: usize,
y: usize,
}
fn main() {
let file_path = "input/11input.txt";
let contents = fs::read_to_string(file_path).expect("should read file");
let mut lines = contents.lines();
let mut matrix: Vec<Vec<char>> = Vec::new();
loop {
match lines.next() {
Some(line) => {
matrix.push(line.chars().collect());
},
None => break,
}
}
let mut coordinates = Vec::new();
let mut coordinates_copy = Vec::new();
for y in 0..matrix.len() {
for x in 0..matrix[y].len() {
if matrix[y][x] == '#' {
coordinates.push(Coordinate{x, y});
coordinates_copy.push(Coordinate{x, y});
}
}
}
for y in 0..matrix.len() {
let mut has_galaxy = false;
for x in 0..matrix[y].len() {
has_galaxy = has_galaxy || matrix[y][x] == '#';
}
if !has_galaxy {
for c in 0..coordinates.len() {
if coordinates[c].y > y {
coordinates_copy[c].y += 999999;
}
}
}
}
for x in 0..matrix[0].len() {
let mut has_galaxy = false;
for y in 0..matrix.len() {
has_galaxy = has_galaxy || matrix[y][x] == '#';
}
if !has_galaxy {
for c in 0..coordinates.len() {
if coordinates[c].x > x {
coordinates_copy[c].x += 999999;
}
}
}
}
let mut sum = 0;
for a in 0..coordinates_copy.len()-1 {
for b in a+1..coordinates_copy.len() {
if coordinates_copy[a].x > coordinates_copy[b].x {
if coordinates_copy[a].y > coordinates_copy[b].y {
sum += coordinates_copy[a].x - coordinates_copy[b].x + coordinates_copy[a].y - coordinates_copy[b].y;
} else {
sum += coordinates_copy[a].x - coordinates_copy[b].x + coordinates_copy[b].y - coordinates_copy[a].y;
}
} else {
if coordinates_copy[a].y > coordinates_copy[b].y {
sum += coordinates_copy[b].x - coordinates_copy[a].x + coordinates_copy[a].y - coordinates_copy[b].y;
} else {
sum += coordinates_copy[b].x - coordinates_copy[a].x + coordinates_copy[b].y - coordinates_copy[a].y;
}
}
}
}
println!("{}", sum);
}