4 changed files with 0 additions and 951 deletions
--- a/2021/data/day13.expected
+++ b/2021/data/day13.expected
@ -1,7 +0,0 @@
 704
 #..#..##...##....##.###..####.#..#..##.
 #..#.#..#.#..#....#.#..#.#....#..#.#..#
 ####.#....#..#....#.###..###..####.#...
 #..#.#.##.####....#.#..#.#....#..#.#...
 #..#.#..#.#..#.#..#.#..#.#....#..#.#..#
 #..#..###.#..#..##..###..####.#..#..##.
--- a/2021/data/day13.input
+++ b/2021/data/day13.input
@ -1,852 +0,0 @@
 43,593
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 fold along x=655
 fold along y=447
 fold along x=327
 fold along y=223
 fold along x=163
 fold along y=111
 fold along x=81
 fold along y=55
 fold along x=40
 fold along y=27
 fold along y=13
 fold along y=6
--- a/2021/day13/day13_rs/Cargo.toml
+++ b/2021/day13/day13_rs/Cargo.toml
@ -1,9 +0,0 @@
 [package]
 name = "day13_rs"
 version = "0.1.0"
 edition = "2021"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 [dependencies]
 nom = "7.1.0"
--- a/2021/day13/day13_rs/src/main.rs
+++ b/2021/day13/day13_rs/src/main.rs
@ -1,83 +0,0 @@
 #![warn(clippy::pedantic)]
 use std::collections::HashSet;
 use std::io::{stdin, Read};
 use nom::bytes::complete::tag;
 use nom::character::complete::{anychar, newline, u32};
 use nom::combinator::{map, map_opt};
 use nom::multi::many1;
 use nom::sequence::{preceded, separated_pair, terminated};
 type Input<'a> = &'a str;
 type IResult<'a, T> = nom::IResult<Input<'a>, T>;
 type Point = (usize, usize);
 fn point(i: Input) -> IResult<Point> {
    separated_pair(map(u32, |i| i as usize), tag(","), map(u32, |i| i as usize))(i)
 }
 #[derive(Clone, Copy, PartialEq, Eq, Debug)]
 enum Fold {
    X(usize),
    Y(usize),
 }
 fn fold(i: Input) -> IResult<Fold> {
    map_opt(
        preceded(
            tag("fold along "),
            separated_pair(anychar, tag("="), map(u32, |i| i as usize)),
        ),
        |(dimension, position)| match dimension {
            'x' => Some(Fold::X(position)),
            'y' => Some(Fold::Y(position)),
            _ => None,
        },
    )(i)
 }
 fn input(i: Input) -> IResult<(Vec<Point>, Vec<Fold>)> {
    separated_pair(
        many1(terminated(point, newline)),
        newline,
        many1(terminated(fold, newline)),
    )(i)
 }
 fn do_fold(points: impl Iterator<Item = Point>, fold: Fold) -> HashSet<Point> {
    let transform = |x, n| if x < n { x } else { n - (x - n) };
    points
        .map(|(x, y)| match fold {
            Fold::X(n) => (transform(x, n), y),
            Fold::Y(n) => (x, transform(y, n)),
        })
        .collect()
 }
 fn main() {
    let mut data = String::new();
    stdin().lock().read_to_string(&mut data).unwrap();
    let (points, folds) = input(&data).unwrap().1;
    let mut points: HashSet<_> = points.into_iter().collect();
    let mut folds = folds.into_iter();
    points = do_fold(points.into_iter(), folds.next().unwrap());
    println!("{}", points.len());
    for fold in folds {
        points = do_fold(points.into_iter(), fold);
    }
    for row in 0..=points.iter().map(|&(_, y)| y).max().unwrap() {
        for col in 0..=points.iter().map(|&(x, _)| x).max().unwrap() {
            if points.contains(&(col, row)) {
                print!("#");
            } else {
                print!(".");
            }
        }
        println!();
    }
 }