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day 7 done

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This commit is contained in:
Dylan Thies
2023-12-08 08:02:47 -05:00
parent 039dcadabc
commit 695b02a3de
2 changed files with 50 additions and 16 deletions
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18
2023/day-7/src/part1.rs
View File

@@ -126,17 +126,23 @@ impl Ord for Hand {
.iter()
.interleave(other.cards.iter())
.tuples::<(_, _)>()
.find_map(|(a, b)| {
match a.cmp(b) {
Ordering::Equal => None,
x => Some(x)
}
}).unwrap_or(Ordering::Equal),
.find_map(|(a, b)| match a.cmp(b) {
Ordering::Equal => None,
x => Some(x),
})
.unwrap_or(Ordering::Equal),
x => x,
}
}
}
/// part1 of day 7 of AOC 2023
///
/// # Arguments
/// - input the puszzle input
///
/// # Panics
/// panics whenever the input isn't parsable
#[must_use]
pub fn part1(input: &str) -> String {
let (_, mut hands) = parse_input(input).expect("always valid input");

48
2023/day-7/src/part2.rs
View File

@@ -6,11 +6,12 @@ use std::{
collections::BTreeMap,
str::FromStr,
};
use std::fmt;
#[derive(Debug)]
struct Day1Part2Error;
#[derive(Debug, Ord, Eq, PartialEq, PartialOrd)]
#[derive(Debug, Ord, Eq, PartialEq, PartialOrd, Copy, Clone)]
enum Card {
Joker = 1,
Two,
@@ -67,6 +68,26 @@ impl From<&Card> for &u32 {
}
}
}
impl fmt::Display for Card {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> fmt::Result {
let c = match self {
Card::Joker => 'J',
Card::Two => '2',
Card::Three => '3',
Card::Four => '4',
Card::Five => '5',
Card::Six => '6',
Card::Seven => '7',
Card::Eight => '8',
Card::Nine => '9',
Card::Ten => 'T',
Card::Queen => 'Q',
Card::King => 'K',
Card::Ace => 'A',
};
write!(f, "{c}")
}
}
#[derive(Debug, Eq, PartialEq, Ord, PartialOrd)]
enum HandType {
@@ -95,19 +116,20 @@ impl From<&Hand> for HandType {
.sorted_by(|a, b| b.1.cmp(a.1))
.collect::<Vec<_>>()[..]
{
[(_, x),..] if jokers + x == 5 => Self::FiveOfAKind,
[(_, x), ..] if jokers + x == 5 => Self::FiveOfAKind,
[] if jokers == 5 => Self::FiveOfAKind,
[(_, x), ..] if jokers + x == 4 => Self::FourOfAKind,
[(_, 3), (_, 2)] => Self::FullHouse,
[(_, 2), (_, 2)] if jokers == 1 => Self::FullHouse,
[(_, x), ..] if jokers + x == 3 => Self::ThreeOfAKind,
[(_, 2), (_, 2), ..] => Self::TwoPair,
[(_, x), ..] if jokers + x == 2 => Self::OnePair,
_ => Self::HighCard,
_ => Self::HighCard,
}
}
}
#[derive(Debug, Eq, PartialEq)]
#[derive(Debug, Eq, PartialEq, Copy, Clone)]
struct Hand {
pub cards: [Card; 5],
pub bet: u32,
@@ -128,17 +150,23 @@ impl Ord for Hand {
.iter()
.interleave(other.cards.iter())
.tuples::<(_, _)>()
.find_map(|(a, b)| {
match a.cmp(b) {
Ordering::Equal => None,
x => Some(x)
}
}).unwrap_or(Ordering::Equal),
.find_map(|(a, b)| match a.cmp(b) {
Ordering::Equal => None,
x => Some(x),
})
.unwrap_or(Ordering::Equal),
x => x,
}
}
}
/// part2 of day 7 of AOC 2023
///
/// # Arguments
/// - input the puszzle input
///
/// # Panics
/// panics whenever the input isn't parsable
#[must_use]
pub fn part2(input: &str) -> String {
let (_, mut hands) = parse_input(input).expect("always valid input");