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just clean it up

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This commit is contained in:
Joe Ardent 2022-12-04 11:55:31 -08:00
parent 63eaad3ad2
commit c2cd2efe3d
1 changed files with 17 additions and 63 deletions
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78
2022-aoc/src/d4.rs
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@ -1,59 +1,24 @@
use std::ops::RangeInclusive;
use aoc_runner_derive::{aoc as aoc_run, aoc_generator}; use aoc_runner_derive::{aoc as aoc_run, aoc_generator};
type Contents = (RangeInclusive<u32>, RangeInclusive<u32>); type Assignments = ((u32, u32), (u32, u32));
#[aoc_generator(day4)] #[aoc_generator(day4)]
fn parse_input(input: &str) -> Vec<Contents> { fn parse_input(input: &str) -> Vec<Assignments> {
let mut out = Vec::with_capacity(input.len());
for line in input.lines() {
let mut split = line.split(',');
let a = split.next().unwrap();
let b = split.next().unwrap();
let mut asplit = a.split('-');
let mut bsplit = b.split('-');
let alo = asplit.next().unwrap().parse().unwrap();
let ahi = asplit.next().unwrap().parse().unwrap();
let blo = bsplit.next().unwrap().parse().unwrap();
let bhi = bsplit.next().unwrap().parse().unwrap();
out.push(((alo..=ahi), (blo..=bhi)));
}
out
}
// with tuples instead of ranges
type AltContents = ((u32, u32), (u32, u32));
#[aoc_generator(day4, part1, alt1)]
fn parse_input1a(input: &str) -> Vec<AltContents> {
let mut out = Vec::with_capacity(input.len()); let mut out = Vec::with_capacity(input.len());
for line in input.lines() { for line in input.lines() {
let (a, b) = line.split_once(',').unwrap(); let (a, b) = line.split_once(',').unwrap();
let (alo, ahi) = a.split_once('-').unwrap(); let (a, b) = (get_range(a), get_range(b));
let (alo, ahi) = (alo.parse().unwrap(), ahi.parse().unwrap()); out.push((a, b));
let (blo, bhi) = b.split_once('-').unwrap();
let (blo, bhi) = (blo.parse().unwrap(), bhi.parse().unwrap());
out.push(((alo, ahi), (blo, bhi)));
} }
out out
} }
// can't define a blanket alt generator?
#[aoc_generator(day4, part2, alt1)]
fn p2a(input: &str) -> Vec<AltContents> {
parse_input1a(input)
}
#[aoc_run(day4, part1)] #[aoc_run(day4, part1)]
fn part1(scheds: &[Contents]) -> u32 { fn part1(scheds: &[Assignments]) -> u32 {
let mut out = 0; let mut out = 0;
for (a, b) in scheds { for (a, b) in scheds {
if (a.contains(b.start()) && a.contains(b.end())) if contains(a, b) || contains(b, a) {
|| (b.contains(a.start()) && b.contains(a.end()))
{
out += 1; out += 1;
} }
} }
@ -61,36 +26,25 @@ fn part1(scheds: &[Contents]) -> u32 {
} }
#[aoc_run(day4, part2)] #[aoc_run(day4, part2)]
fn part2(scheds: &[Contents]) -> u32 { fn part2(scheds: &[Assignments]) -> u32 {
let mut out = 0; let mut out = 0;
for (a, b) in scheds { for (a, b) in scheds {
if (a.contains(b.start()) || a.contains(b.end())) if overlaps(a, b) || overlaps(b, a) {
|| (b.contains(a.start()) || b.contains(a.end()))
{
out += 1; out += 1;
} }
} }
out out
} }
#[aoc_run(day4, part1, alt1)] fn get_range(r: &str) -> (u32, u32) {
fn part1a(scheds: &[AltContents]) -> u32 { let (lo, hi) = r.split_once('-').unwrap();
let mut out = 0; (lo.parse().unwrap(), hi.parse().unwrap())
for (a, b) in scheds {
if (a.0 <= b.0 && b.1 <= a.1) || (b.0 <= a.0 && a.1 <= b.1) {
out += 1;
}
}
out
} }
#[aoc_run(day4, part2, alt1)] fn contains(a: &(u32, u32), b: &(u32, u32)) -> bool {
fn part2a(scheds: &[AltContents]) -> u32 { a.0 <= b.0 && b.1 <= a.1
let mut out = 0;
for (a, b) in scheds {
if (a.0 <= b.0 && b.0 <= a.1) || (b.0 <= a.0 && a.0 <= b.1) {
out += 1;
} }
}
out fn overlaps(a: &(u32, u32), b: &(u32, u32)) -> bool {
a.0 <= b.0 && b.0 <= a.1
} }