Make it more cursed
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This commit is contained in:
Julius 2021-12-06 11:36:24 +01:00
parent f2f63bbc47
commit 0c4593f8fe
Signed by: j00lz
GPG key ID: AF241B0AA237BBA2

View file

@ -1,35 +1,31 @@
use crate::Day;
pub struct Day06(Vec<u8>);
pub struct Day06([u64; 9]);
impl Day for Day06 {
fn init(content: String) -> Self {
Self(content.split(',').map(|x| x.parse().expect("This is not an int!")).collect::<Vec<_>>())
let c = content.split(',').map(|x| x.parse().expect("This is not an int!")).collect::<Vec<usize>>();
let mut w: [u64; 9] = [0, 0, 0, 0, 0, 0, 0, 0, 0];
for z in c {
w[z as usize] += 1;
}
Self(w)
}
fn part1(&self) -> String {
format!("{}", self.do_hashmap_magic(80))
format!("{}", self.do_magic(80))
}
fn part2(&self) -> String {
format!("{}", self.do_hashmap_magic(256))
format!("{}", self.do_magic(256))
}
}
impl Day06 {
fn do_hashmap_magic(&self, days: u64) -> u64 {
let x = self.0.clone();
let mut w: [u64; 9] = [0, 0, 0, 0, 0, 0, 0, 0, 0];
for z in x {
w[z as usize] += 1;
}
for _ in 0..days {
w = Self::foo(w);
}
w.iter().sum()
fn do_magic(&self, days: u64) -> u64 {
(0..days).fold(self.0, Self::foo).iter().sum()
}
fn foo([a, b, c, d, e, f, g, h, i]: [u64; 9]) -> [u64; 9] {
fn foo([a, b, c, d, e, f, g, h, i]: [u64; 9], _: u64) -> [u64; 9] {
[b, c, d, e, f, g, h + a, i, a]
}
}