72 lines
2.1 KiB
Rust
72 lines
2.1 KiB
Rust
|
use std::{fs, env, collections::HashSet};
|
||
|
|
|
||
|
|
fn read_input(path: &str) -> String {
|
||
|
|
return fs::read_to_string(path).expect("Cannot read file.");
|
||
|
|
}
|
||
|
|
|
||
|
|
fn parse_input(s: &str) -> (HashSet<(i32, i32)>, Vec<(char, i32)>) {
|
||
|
|
let mut is_fold = false;
|
||
|
|
let mut t = HashSet::new();
|
||
|
|
let mut i = vec![];
|
||
|
|
for l in s.lines() {
|
||
|
|
if l == "" { is_fold = true; continue; }
|
||
|
|
if !is_fold {
|
||
|
|
let x = l.split_once(",").unwrap();
|
||
|
|
t.insert((x.0.parse().unwrap(), x.1.parse().unwrap()));
|
||
|
|
} else {
|
||
|
|
let x = l.split_once("=").unwrap();
|
||
|
|
i.push((x.0.chars().last().unwrap(), x.1.parse().unwrap()));
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return (t, i);
|
||
|
|
}
|
||
|
|
|
||
|
|
fn apply_n_folds(i: &HashSet<(i32, i32)>, f: &Vec<(char, i32)>, n: usize) -> HashSet<(i32, i32)> {
|
||
|
|
let mut h = i.clone();
|
||
|
|
for x in 0..n {
|
||
|
|
for c in h.clone().iter() {
|
||
|
|
if f[x].0 == 'y' {
|
||
|
|
h.insert((c.0, if c.1 > f[x].1 { c.1 - (c.1 - f[x].1) * 2 } else { c.1 }));
|
||
|
|
if c.1 > f[x].1 {
|
||
|
|
h.remove(c);
|
||
|
|
}
|
||
|
|
} else {
|
||
|
|
h.insert((if c.0 > f[x].1 { c.0 - (c.0 - f[x].1) * 2 } else { c.0 }, c.1));
|
||
|
|
if c.0 > f[x].1 {
|
||
|
|
h.remove(c);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return h;
|
||
|
|
}
|
||
|
|
|
||
|
|
fn show_array(i: &HashSet<(i32, i32)>) {
|
||
|
|
let m = i.iter().map(|e| e.0).max().unwrap();
|
||
|
|
let n = i.iter().map(|e| e.1).max().unwrap();
|
||
|
|
for y in 0..=n {
|
||
|
|
print!("\t\t");
|
||
|
|
for x in 0..=m {
|
||
|
|
if i.contains(&(x, y)) {
|
||
|
|
print!("{}", '#');
|
||
|
|
} else {
|
||
|
|
print!(" ");
|
||
|
|
}
|
||
|
|
}
|
||
|
|
println!();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
fn main() {
|
||
|
|
let args: Vec<String> = env::args().collect();
|
||
|
|
for arg in args.iter().skip(1) {
|
||
|
|
let input = read_input(&arg);
|
||
|
|
let vec_in = parse_input(&input);
|
||
|
|
println!("[{}]", &arg);
|
||
|
|
println!("\t[Part 1] => Answer is '{}'.", apply_n_folds(&vec_in.0, &vec_in.1, 1).len());
|
||
|
|
println!("\t[Part 2] => Answer is:");
|
||
|
|
show_array(&apply_n_folds(&vec_in.0, &vec_in.1, vec_in.1.len()));
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|