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day04 part 1

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This commit is contained in:
Gabe Venberg 2023-12-04 11:08:53 -06:00
parent 5bd1d16259
commit 436f6c56c3
8 changed files with 430 additions and 0 deletions
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15
Cargo.lock generated
View file

@ -15,6 +15,12 @@ dependencies = [
name = "aoc_libs"
version = "0.1.0"
[[package]]
name = "collection_literals"
version = "1.0.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "186dce98367766de751c42c4f03970fc60fc012296e706ccbb9d5df9b6c1e271"
[[package]]
name = "day01"
version = "0.1.0"
@ -32,6 +38,15 @@ dependencies = [
"nom",
]
[[package]]
name = "day04"
version = "0.1.0"
dependencies = [
"aoc_libs",
"collection_literals",
"nom",
]
[[package]]
name = "memchr"
version = "2.6.4"

1
Cargo.toml
View file

@ -19,3 +19,4 @@ regex = "1"
once_cell = "1.16"
thiserror = "1.0"
nom = "7.1"
collection_literals = "1.0.1"

11
days/day04/Cargo.toml Normal file
View file

@ -0,0 +1,11 @@
[package]
name = "day04"
authors.workspace = true
description.workspace = true
version.workspace = true
edition.workspace = true
[dependencies]
aoc_libs.workspace = true
nom.workspace = true
collection_literals.workspace = true

193
days/day04/src/input.txt Normal file
View file

@ -0,0 +1,193 @@
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Card 183: 28 78 55 47 42 63 49 25 76 33 | 35 15 41 37 49 50 69 70 87 88 73 77 30 6 97 61 7 38 98 1 32 48 99 47 16
Card 184: 96 39 9 10 41 91 42 89 8 55 | 94 53 33 12 81 88 42 87 39 1 92 10 98 26 48 29 72 54 96 91 47 13 78 83 68
Card 185: 62 93 55 27 14 24 52 1 9 48 | 58 62 35 88 45 46 24 82 12 27 77 25 10 81 6 60 71 41 52 37 50 48 28 80 75
Card 186: 90 95 45 20 89 88 34 55 25 2 | 89 31 34 8 86 5 91 90 25 84 45 81 24 65 60 64 19 94 49 55 75 20 47 44 61
Card 187: 43 2 16 46 75 68 71 15 45 9 | 30 7 14 37 44 48 65 62 99 89 87 75 10 69 56 78 25 76 59 1 39 23 79 70 68
Card 188: 67 81 88 51 13 5 61 45 27 10 | 35 39 80 10 30 27 38 3 36 22 52 7 40 49 45 79 9 63 42 13 96 31 23 78 98
Card 189: 9 6 93 60 97 95 81 94 15 35 | 95 28 17 2 52 47 5 3 86 57 59 81 21 23 41 80 34 51 53 70 68 62 83 74 22
Card 190: 65 67 94 63 74 34 48 36 27 20 | 1 91 37 3 49 16 18 7 31 53 25 96 68 88 90 95 27 6 19 58 66 45 73 26 32
Card 191: 33 50 17 66 25 78 56 26 93 58 | 24 27 1 28 84 63 8 54 12 39 10 17 65 51 68 37 43 85 42 38 7 96 92 2 71
Card 192: 4 6 53 67 24 7 31 98 51 64 | 23 89 13 77 22 40 20 88 21 44 49 41 93 64 15 56 50 62 57 80 3 82 70 48 18
Card 193: 77 56 76 24 35 51 22 43 31 34 | 86 38 36 63 58 91 87 73 66 67 61 95 28 16 42 39 41 9 83 37 59 97 92 5 6

14
days/day04/src/main.rs Normal file
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mod part1;
mod part2;
mod parse;
fn main() {
let input = include_str!("./input.txt");
let structured_input = parse::parse(input);
println!("Part One");
println!("Result: {}", part1::part1(&structured_input));
println!("Part Two");
println!("Result: {}", part2::part2());
}

122
days/day04/src/parse.rs Normal file
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use std::collections::BTreeSet;
use nom::{
bytes::complete::tag,
multi::{many1, separated_list1},
sequence::{preceded, terminated},
IResult,
};
#[derive(Debug, PartialEq, Eq,)]
pub struct Card {
pub id: usize,
pub winning_numbers: BTreeSet<u8>,
pub numbers: BTreeSet<u8>,
}
impl Card {
pub fn parse(input: &str) -> IResult<&str, Card> {
let mut game_id = terminated(
preceded(
preceded(tag("Card"), many1(tag(" "))),
nom::character::complete::u8,
),
preceded(tag(":"), many1(tag(" "))),
);
let mut number_list = separated_list1(many1(tag(" ")), nom::character::complete::u8);
let seperator = preceded(tag(" |"), many1(tag(" ")));
let (input, id) = game_id(input)?;
let (input, winning_numbers) = number_list(input)?;
let (input, numbers) = preceded(seperator, number_list)(input)?;
let winning_numbers: BTreeSet<u8> = winning_numbers.into_iter().collect();
let numbers: BTreeSet<u8> = numbers.into_iter().collect();
Ok((
input,
Card {
id: id as usize,
winning_numbers,
numbers,
},
))
}
pub fn winning_number_matches(&self) -> BTreeSet<u8> {
self.numbers
.intersection(&self.winning_numbers)
.cloned()
.collect()
}
}
pub fn parse(input: &str) -> Vec<Card> {
input.lines().map(|l| Card::parse(l).unwrap().1).collect()
}
#[cfg(test)]
mod tests {
use super::*;
use collection_literals::collection;
#[test]
fn test_parse() {
let input = concat!(
"Card 1: 41 48 83 86 17 | 83 86 6 31 17 9 48 53\n",
"Card 2: 13 32 20 16 61 | 61 30 68 82 17 32 24 19\n",
"Card 3: 1 21 53 59 44 | 69 82 63 72 16 21 14 1\n",
"Card 4: 41 92 73 84 69 | 59 84 76 51 58 5 54 83\n",
"Card 5: 87 83 26 28 32 | 88 30 70 12 93 22 82 36\n",
"Card 6: 31 18 13 56 72 | 74 77 10 23 35 67 36 11\n",
);
assert_eq!(
parse(input),
vec![
Card {
id: 1,
winning_numbers: collection! {17, 41, 48, 83, 86},
numbers: collection! {6, 9, 17, 31, 48, 53, 83, 86}
},
Card {
id: 2,
winning_numbers: collection! {13, 16, 20, 32, 61},
numbers: collection! {17, 19, 24, 30, 32, 61, 68, 82}
},
Card {
id: 3,
winning_numbers: collection! {1, 21, 44, 53, 59},
numbers: collection! {1, 14, 16, 21, 63, 69, 72, 82}
},
Card {
id: 4,
winning_numbers: collection! {41, 69, 73, 84, 92},
numbers: collection! {5, 51, 54, 58, 59, 76, 83, 84}
},
Card {
id: 5,
winning_numbers: collection! {26, 28, 32, 83, 87},
numbers: collection! {12, 22, 30, 36, 70, 82, 88, 93}
},
Card {
id: 6,
winning_numbers: collection! {13 , 18, 31, 56, 72},
numbers: collection! {10, 11, 23, 35, 36, 67, 74, 77}
}
]
);
}
#[test]
fn test_card_parse() {
let input = "Card 1: 41 48 83 86 17 | 83 86 6 31 17 9 48 53";
assert_eq!(
Card::parse(input).unwrap(),
(
"",
Card {
id: 1,
winning_numbers: collection! {41, 48, 83, 86, 17},
numbers: collection! {83, 86, 6, 31, 17, 9, 48, 53},
}
)
)
}
}

59
days/day04/src/part1.rs Normal file
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use crate::parse::*;
pub fn part1(input: &[Card]) -> usize {
input
.iter()
.map(|c| {
let len = c.winning_number_matches().len();
if len >=1{
2_usize.pow((len-1).try_into().unwrap())
} else {
0
}
})
.sum()
}
#[cfg(test)]
mod tests {
use collection_literals::collection;
use super::*;
#[test]
fn test_part1() {
let input = vec![
Card {
id: 1,
winning_numbers: collection! {17, 41, 48, 83, 86},
numbers: collection! {6, 9, 17, 31, 48, 53, 83, 86},
},
Card {
id: 2,
winning_numbers: collection! {13, 16, 20, 32, 61},
numbers: collection! {17, 19, 24, 30, 32, 61, 68, 82},
},
Card {
id: 3,
winning_numbers: collection! {1, 21, 44, 53, 59},
numbers: collection! {1, 14, 16, 21, 63, 69, 72, 82},
},
Card {
id: 4,
winning_numbers: collection! {41, 69, 73, 84, 92},
numbers: collection! {5, 51, 54, 58, 59, 76, 83, 84},
},
Card {
id: 5,
winning_numbers: collection! {26, 28, 32, 83, 87},
numbers: collection! {12, 22, 30, 36, 70, 82, 88, 93},
},
Card {
id: 6,
winning_numbers: collection! {13 , 18, 31, 56, 72},
numbers: collection! {10, 11, 23, 35, 36, 67, 74, 77},
},
];
assert_eq!(part1(&input), 13);
}
}

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use crate::parse::*;
pub fn part2() -> usize {
unimplemented!()
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn test_part2() {
assert_eq!(0, 0);
}
}