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Found the inefficiency. Could probably write this better, but happy with the performance now

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Connor Johnstone
2023-12-11 01:04:30 -07:00
parent 2c041b10af
commit 0be182c7f0
4 changed files with 493 additions and 4 deletions
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6
day_10/src/lib.rs
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@@ -147,7 +147,7 @@ pub fn part2(input: &str) -> String {
// L's cancel F's, J's cancel 7's
if count_map[[new_y,x]] != 0 {
// We can add either a half or full count
let next_character = input.lines().nth(new_y).unwrap().chars().nth(x).unwrap();
let next_character = std::str::from_utf8(&[input.as_bytes()[new_y*columns + x]]).unwrap().chars().next().unwrap();
if ['7', 'S'].contains(&next_character) {
count_7 += 1;
} else if next_character == 'J' {
@@ -161,9 +161,7 @@ pub fn part2(input: &str) -> String {
}
}
}
count_f = count_f.abs();
count_7 = count_7.abs();
sum += (count_f + count_7) as f32 / 2.0;
sum += (count_f.abs() + count_7.abs()) as f32 / 2.0;
if sum % 2.0 != 0.0 {
inside_points += 1;
}