heh
Diffstat (limited to 'src/main.rs')
| -rw-r--r-- | src/main.rs | 33 |
1 files changed, 12 insertions, 21 deletions
diff --git a/src/main.rs b/src/main.rs index f6055ab..3535338 100644 --- a/src/main.rs +++ b/src/main.rs @@ -1,6 +1,5 @@ #![allow(confusable_idents, uncommon_codepoints, mixed_script_confusables)] #![feature( - iter_collect_into, unchecked_math, array_windows, slice_take, @@ -15,20 +14,6 @@ mod util; pub use util::prelude::*; -fn trans(v: Box<[&[u8]]>) -> Box<[Box<[u8]>]> { - let len = v[0].len(); - let mut iters: Vec<_> = v.into_iter().map(|n| n.into_iter()).collect(); - (0..len) - .map(|_| { - iters - .iter_mut() - .map(|n| n.next().unwrap()) - .copied() - .collect::<Box<[u8]>>() - }) - .collect() -} - pub fn run(i: &str) -> impl Display { let mut sum = 0; for lines in i.split("\n\n") { @@ -47,16 +32,22 @@ pub fn run(i: &str) -> impl Display { sum += (i + 1) * 100; } } - let this = trans(this); - 'huh: for (&[ref a, ref b], i) in this.array_windows::<2>().ι::<usize>() { - if a == b { + let t = &this; + 'yes: for ((a, b), i) in (0..this[0].len()) + .map(|x| (0..this.len()).map(move |y| t[y][x])) + .tuple_windows() + .ι::<usize>() + { + if a.zip(b).all(|(a, b)| a == b) { let mut α = i; let mut β = i + 1; - while α > 0 && β < this.len() - 1 { + while α > 0 && β < this[0].len() - 1 { α -= 1; β += 1; - if this[β] != this[α] { - continue 'huh; + for i in 0..this.len() { + if this[i][β] != this[i][α] { + continue 'yes; + } } } sum += i + 1; |