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day9: formatting

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This commit is contained in:
Keenan Tims 2023-12-08 21:41:30 -08:00
parent 37b645c341
commit b84b0b04e2
Signed by: ktims
GPG Key ID: 11230674D69038D4
1 changed files with 11 additions and 9 deletions
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20
9/src/main.rs
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@ -1,6 +1,6 @@
use itertools::Itertools;
use std::fs::File;
use std::io::{BufRead, BufReader, Lines};
use itertools::Itertools;
// BOILERPLATE
type InputIter = Lines<BufReader<File>>;
@ -34,12 +34,8 @@ impl From<&str> for History {
impl History {
fn build_row(&mut self) {
let last = self.0.last().unwrap();
self.0.push(
last.iter()
.tuple_windows()
.map(|(a, b)| b - a)
.collect(),
)
self.0
.push(last.iter().tuple_windows().map(|(a, b)| b - a).collect())
}
fn build(&mut self) {
@ -76,7 +72,10 @@ fn problem1<T: BufRead>(input: Lines<T>) -> i64 {
history.extrapolate();
}
histories.iter().map(|history| history.0.first().unwrap().last().unwrap()).sum()
histories
.iter()
.map(|history| history.0.first().unwrap().last().unwrap())
.sum()
}
// PROBLEM 2 solution
@ -87,7 +86,10 @@ fn problem2<T: BufRead>(input: Lines<T>) -> i64 {
history.extrapolate2();
}
histories.iter().map(|history| history.0.first().unwrap().first().unwrap()).sum()
histories
.iter()
.map(|history| history.0.first().unwrap().first().unwrap())
.sum()
}
#[cfg(test)]