traxys/aoc_2025
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Use FX Hash

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This commit is contained in:
Quentin Boyer 2025-12-10 01:39:56 +01:00
parent 172b33b63c
commit c9bd84ebdb
3 changed files with 19 additions and 14 deletions
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25
src/bin/day9.rs
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@ -1,9 +1,6 @@
use std::{
collections::{HashMap, HashSet},
hash::Hash,
ops::RangeInclusive,
time::Instant,
};
use std::{collections::HashSet, hash::Hash, ops::RangeInclusive, time::Instant};
use rustc_hash::FxHashMap;
use aoc_2025::{load, print_res};
use bstr::BString;
@ -184,7 +181,7 @@ impl Polygon {
}
}
struct InsertGuard<'a, K, V>(K, V, &'a mut HashMap<K, V>)
struct InsertGuard<'a, K, V>(K, V, &'a mut FxHashMap<K, V>)
where
K: Hash + Eq + Copy,
V: Copy;
@ -203,8 +200,8 @@ fn horizontal_edges_contained(
poly: &Polygon,
a: Point2,
b: Point2,
cache: &mut HashMap<Point2, bool>,
edge_cache: &mut HashMap<(u32, (u32, u32)), bool>,
cache: &mut FxHashMap<Point2, bool>,
edge_cache: &mut FxHashMap<(u32, (u32, u32)), bool>,
) -> bool {
assert_ne!(a.x, b.x);
@ -277,8 +274,8 @@ fn vertical_edges_contain(
poly: &Polygon,
a: Point2,
b: Point2,
cache: &mut HashMap<Point2, bool>,
edge_cache: &mut HashMap<(u32, (u32, u32)), bool>,
cache: &mut FxHashMap<Point2, bool>,
edge_cache: &mut FxHashMap<(u32, (u32, u32)), bool>,
) -> bool {
assert_ne!(a.y, b.y);
@ -353,9 +350,9 @@ pub fn part2(input: Parsed) {
let mut max_area = 0;
let mut contains_cache = HashMap::new();
let mut h_edge_cache = HashMap::new();
let mut v_edge_cache = HashMap::new();
let mut contains_cache = FxHashMap::default();
let mut h_edge_cache = FxHashMap::default();
let mut v_edge_cache = FxHashMap::default();
for (ia, &a) in poly.points().iter().enumerate() {
for &b in poly.points().iter().skip(ia + 1) {