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Reformat D4P2

This commit is contained in:
kageru 2019-12-04 22:18:55 +01:00
parent e4e4fd6b98
commit d8916eb4ed
Signed by: kageru
GPG Key ID: 8282A2BEA4ADA3D2
1 changed files with 12 additions and 15 deletions
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27
2019/04/src/main.rs
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@ -2,24 +2,21 @@
use itertools::Itertools;
pub fn main() {
let (lower, upper) = (172_930, 683_082);
let valid_part1 = (lower..upper)
let valid_part1 = (172_930..683_082)
.map(|n| n.to_string().chars().collect::<Vec<_>>())
.filter(|n| n.is_sorted())
.filter(|v| v.clone().iter().dedup().count() != v.len());
println!("Part 1: {}", valid_part1.clone().count());
let part2 = valid_part1
.filter(|vec| {
vec.iter()
.group_by(move |n| *n)
.into_iter()
.filter_map(|(_, v)| if v.count() == 2 { Some(true) } else { None })
// can’t do this because I’m too smol brained for the borrow checker
//.filter(|(_, v)| v.count() == 2)
.count()
> 0
})
.count();
println!("Part 2: {}", part2);
let part2 = valid_part1.filter(|vec| {
vec.iter()
.group_by(move |n| *n)
.into_iter()
.filter_map(|(_, v)| if v.count() == 2 { Some(true) } else { None })
// can’t do this because I’m too smol brained for the borrow checker
//.filter(|(_, v)| v.count() == 2)
.count()
> 0
});
println!("Part 2: {}", part2.count());
}