64 lines
1.4 KiB
Rust
64 lines
1.4 KiB
Rust
|
use aoc::Result;
|
||
|
|
|
||
|
|
const INPUT: &str = include_str!("../input/day05.txt");
|
||
|
|
|
||
|
|
pub fn run() -> Result<()> {
|
||
|
|
println!("part 1: {}", part1(INPUT));
|
||
|
|
|
||
|
|
Ok(())
|
||
|
|
}
|
||
|
|
|
||
|
|
fn part1(input: &str) -> usize {
|
||
|
|
input
|
||
|
|
.lines()
|
||
|
|
.map(|line| line.trim_end())
|
||
|
|
.filter(|line| {
|
||
|
|
let mut vowel_count = 0;
|
||
|
|
for c in line.chars() {
|
||
|
|
if "aeiou".find(c).is_some() {
|
||
|
|
vowel_count += 1;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
vowel_count >= 3
|
||
|
|
})
|
||
|
|
.filter(|line| {
|
||
|
|
let mut prev = None;
|
||
|
|
for c in line.chars() {
|
||
|
|
if let Some(p) = prev {
|
||
|
|
if p == c {
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
prev = Some(c);
|
||
|
|
}
|
||
|
|
|
||
|
|
false
|
||
|
|
})
|
||
|
|
.filter(|line| line.find("ab").is_none())
|
||
|
|
.filter(|line| line.find("cd").is_none())
|
||
|
|
.filter(|line| line.find("pq").is_none())
|
||
|
|
.filter(|line| line.find("xy").is_none())
|
||
|
|
.count()
|
||
|
|
}
|
||
|
|
|
||
|
|
#[cfg(test)]
|
||
|
|
mod tests {
|
||
|
|
use super::*;
|
||
|
|
|
||
|
|
#[test]
|
||
|
|
fn part1_provided() {
|
||
|
|
assert_eq!(part1("ugknbfddgicrmopn"), 1);
|
||
|
|
assert_eq!(part1("aaa"), 1);
|
||
|
|
assert_eq!(part1("jchzalrnumimnmhp"), 0);
|
||
|
|
assert_eq!(part1("haegwjzuvuyypxyu"), 0);
|
||
|
|
assert_eq!(part1("dvszwmarrgswjxmb"), 0);
|
||
|
|
}
|
||
|
|
|
||
|
|
#[test]
|
||
|
|
fn part1_real() {
|
||
|
|
assert_eq!(part1(INPUT), 258);
|
||
|
|
}
|
||
|
|
}
|