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2022 rust day 6

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This commit is contained in:
Maciej Jur 2022-12-06 13:54:39 +01:00
parent 9148cdbdd1
commit a81d2e2d71
1 changed files with 5 additions and 7 deletions
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12
2022/rust/src/solutions/day06.rs
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@ -22,13 +22,11 @@ fn solve2(data: &Vec<char>) -> usize {
fn marker_for(data: &Vec<char>, window_len: usize) -> usize { fn marker_for(data: &Vec<char>, window_len: usize) -> usize {
data.windows(window_len) data.windows(window_len)
.enumerate() .enumerate()
.filter_map(|(idx, window)| { .filter_map(|(idx, window)| window.iter()
let unique = window.iter().copied().collect::<HashSet<char>>().len() == window_len; .collect::<HashSet<_>>()
match unique { .len().eq(&window_len)
true => Some(idx + window_len), .then_some(idx + window_len)
false => None )
}
})
.next().unwrap() .next().unwrap()
} }