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Author SHA1 Message Date
Andrew Coleman b750d99261 naive day5 solution 2023-12-05 13:01:42 -05:00
Andrew Coleman 45481154d1 day 4 solution 2023-12-05 10:59:27 -05:00
Andrew Coleman cf3d410dc7 remove unused crates 2023-12-05 10:59:21 -05:00
Andrew Coleman 428efcbfc1 day3 solution 2023-12-04 15:47:32 -05:00
Andrew Coleman d2fdbae3ae ignore input dir 2023-12-04 15:47:25 -05:00
Andrew Coleman d79b52774b do not track input 2023-12-04 15:47:02 -05:00
Andrew Coleman b99c652662 day2 solution 2023-12-04 12:24:35 -05:00
Andrew Coleman b3ffab172d day 1 solution 2023-12-04 11:43:33 -05:00
Andrew Coleman b531b180e8 ignore target directory 2023-12-04 11:43:21 -05:00
11 changed files with 813 additions and 0 deletions

1
.gitignore vendored
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*.beam
*.dump
*.swp
target

1
2023/.gitignore vendored Normal file
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input

129
2023/Cargo.lock generated Normal file
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# This file is automatically @generated by Cargo.
# It is not intended for manual editing.
version = 3
[[package]]
name = "aoc-runner"
version = "0.3.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "d21ef9204ad206a5a3e918e9920da04e1118ad91ce4f23570be964b9d6b9dfcb"
[[package]]
name = "aoc-runner-derive"
version = "0.3.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "ba8b944269d3fee645d281b1335e1797044db497bb02d0098cc3fdb8900069cc"
dependencies = [
"aoc-runner-internal",
"proc-macro2",
"quote",
"syn 1.0.109",
]
[[package]]
name = "aoc-runner-internal"
version = "0.1.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "274b0ba7f3669a45ec0aaacf94eb032a749de880ab776091576cca94037c9982"
dependencies = [
"serde",
"serde_derive",
"serde_json",
]
[[package]]
name = "aoc2023"
version = "0.1.0"
dependencies = [
"aoc-runner",
"aoc-runner-derive",
]
[[package]]
name = "itoa"
version = "1.0.9"
source = "registry+https://github.com/rust-lang/crates.io-index"
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name = "proc-macro2"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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dependencies = [
"unicode-ident",
]
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name = "quote"
version = "1.0.33"
source = "registry+https://github.com/rust-lang/crates.io-index"
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dependencies = [
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]
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[[package]]
name = "serde"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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dependencies = [
"serde_derive",
]
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name = "serde_derive"
version = "1.0.193"
source = "registry+https://github.com/rust-lang/crates.io-index"
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dependencies = [
"proc-macro2",
"quote",
"syn 2.0.39",
]
[[package]]
name = "serde_json"
version = "1.0.108"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "3d1c7e3eac408d115102c4c24ad393e0821bb3a5df4d506a80f85f7a742a526b"
dependencies = [
"itoa",
"ryu",
"serde",
]
[[package]]
name = "syn"
version = "1.0.109"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "72b64191b275b66ffe2469e8af2c1cfe3bafa67b529ead792a6d0160888b4237"
dependencies = [
"proc-macro2",
"quote",
"unicode-ident",
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[[package]]
name = "syn"
version = "2.0.39"
source = "registry+https://github.com/rust-lang/crates.io-index"
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dependencies = [
"proc-macro2",
"quote",
"unicode-ident",
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12
2023/Cargo.toml Normal file
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[package]
name = "aoc2023"
version = "0.1.0"
edition = "2021"
[lib]
name = "aoc2023"
path = "src/lib.rs"
[dependencies]
aoc-runner = "0.3.0"
aoc-runner-derive = "0.3.0"

139
2023/src/day01.rs Normal file
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use aoc_runner_derive::aoc;
fn parse(input: &str) -> Vec<u32> {
input
.lines()
.filter_map(|l| {
let v: Vec<&str> = l.matches(char::is_numeric).collect();
if !v.is_empty() {
let tens = v[0].parse::<u32>().unwrap() * 10;
let ones = v[v.len() - 1].parse::<u32>().unwrap();
Some(tens + ones)
} else {
None
}
})
.collect()
}
#[aoc(day1, part1)]
fn part1_sum(input: &str) -> u32 {
let lines = parse(input);
lines.iter().sum()
}
#[aoc(day1, part2)]
fn part2_sum(input: &str) -> u32 {
sub_letters_for_digits(input).iter().sum()
}
fn char_to_num(c: char) -> Option<u32> {
match c {
'0' => Some(0),
'1' => Some(1),
'2' => Some(2),
'3' => Some(3),
'4' => Some(4),
'5' => Some(5),
'6' => Some(6),
'7' => Some(7),
'8' => Some(8),
'9' => Some(9),
_ => None,
}
}
const DIGITS: [&'static str; 10] = [
"zero", "one", "two", "three", "four", "five", "six", "seven", "eight", "nine",
];
fn letter_digit_at(line: &str, index: usize) -> Option<u32> {
for (dindex, d) in DIGITS.iter().enumerate() {
if index + d.len() > line.len() {
continue;
}
let index2 = index + d.len();
let substring: &str = line[index..index2].as_ref();
if *d == substring {
// println!("compare {} dindex {} d {}", index, dindex, d);
return Some(dindex as u32);
}
}
None
}
fn digit_for_char(line: &str, index: usize, c: char) -> Option<u32> {
if c.is_ascii_digit() {
char_to_num(c)
} else {
letter_digit_at(line, index)
}
}
fn sub_letters_for_digits(input: &str) -> Vec<u32> {
input
.lines()
.filter_map(|line| {
if !line.is_empty() {
let mut first_digit = 0;
let mut second_digit = 0;
for (index, c) in line.chars().enumerate() {
if let Some(digit) = digit_for_char(line, index, c) {
first_digit = digit;
break;
}
}
for (index, c) in line.chars().rev().enumerate() {
if let Some(digit) = digit_for_char(line, line.len() - index - 1, c) {
second_digit = digit;
break;
}
}
let num = first_digit * 10 + second_digit;
println!("line {} num {}", line, num);
Some(num)
} else {
None
}
})
.collect()
}
#[cfg(test)]
mod tests {
use super::*;
const SAMPLE_DATA: &'static str = r#"
1abc2
pqr3stu8vwx
a1b2c3d4e5f
treb7uchet
"#;
#[test]
fn sample_data() {
let expected = [12, 38, 15, 77];
let data = parse(SAMPLE_DATA);
assert_eq!(data, expected);
let part1 = part1_sum(SAMPLE_DATA);
assert_eq!(part1, 142);
}
const SAMPLE_DATA2: &'static str = r#"
two1nine
eightwothree
abcone2threexyz
xtwone3four
4nineeightseven2
zoneight234
7pqrstsixteen
"#;
#[test]
fn sample_data_part2() {
let data = sub_letters_for_digits(SAMPLE_DATA2);
assert_eq!(data, [29, 83, 13, 24, 42, 14, 76]);
let part2 = part2_sum(SAMPLE_DATA2);
assert_eq!(part2, 281);
}
}

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2023/src/day02.rs Normal file
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use aoc_runner_derive::{aoc, aoc_generator};
const MAX_RED: u32 = 12;
const MAX_GREEN: u32 = 13;
const MAX_BLUE: u32 = 14;
#[derive(Debug)]
struct Turn {
red: u32,
green: u32,
blue: u32,
}
#[derive(Debug)]
struct Game {
id: u32,
turns: Vec<Turn>,
}
impl Game {
fn part1_possible(&self) -> Option<u32> {
for turn in self.turns.iter() {
if turn.red > MAX_RED || turn.green > MAX_GREEN || turn.blue > MAX_BLUE {
return None;
}
}
return Some(self.id);
}
fn part2_power(&self) -> u32 {
let mut max_red = 0;
let mut max_green = 0;
let mut max_blue = 0;
for turn in self.turns.iter() {
if turn.red > max_red {
max_red = turn.red;
}
if turn.green > max_green {
max_green = turn.green;
}
if turn.blue > max_blue {
max_blue = turn.blue;
}
}
max_red * max_green * max_blue
}
}
#[aoc_generator(day2)]
fn parse(input: &str) -> Vec<Game> {
input
.lines()
.filter_map(|line| {
if !line.is_empty() {
let gparts: Vec<&str> = line.split(": ").collect();
let game_id = gparts[0].split(" ").collect::<Vec<&str>>()[1]
.parse::<u32>()
.unwrap();
let mut turns: Vec<Turn> = vec![];
for whole_turn in gparts[1].split("; ") {
let mut red = 0;
let mut green = 0;
let mut blue = 0;
for dice_group in whole_turn.split(", ") {
let dice_parts: Vec<&str> = dice_group.split(" ").collect();
let count = dice_parts[0].parse::<u32>().unwrap();
match dice_parts[1] {
"red" => red = count,
"green" => green = count,
"blue" => blue = count,
_ => println!("invalid color! {}", dice_parts[0]),
}
}
turns.push(Turn { red, green, blue });
}
Some(Game { id: game_id, turns })
} else {
None
}
})
.collect()
}
#[aoc(day2, part1)]
fn part1_valid_game_sum(input: &[Game]) -> u32 {
input.iter().filter_map(|game| game.part1_possible()).sum()
}
#[aoc(day2, part2)]
fn part2_power_sum(input: &[Game]) -> u32 {
input.iter().map(|game| game.part2_power()).sum()
}
#[cfg(test)]
mod tests {
// use super::*;
}

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2023/src/day03.rs Normal file
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use aoc_runner_derive::{aoc, aoc_generator};
use std::collections::BTreeMap;
type PartList = BTreeMap<(usize, usize, char), Vec<u32>>;
fn parse(input: &str) -> Vec<Vec<char>> {
input
.lines()
.filter_map(|line| {
if !line.is_empty() {
Some(line.chars().collect::<Vec<char>>())
} else {
None
}
})
.collect()
}
#[aoc_generator(day3)]
fn associate_parts(input: &str) -> PartList {
let parsed_input = parse(input);
let mut result: PartList = BTreeMap::new();
for (line_index, line) in parsed_input.iter().enumerate() {
let mut parse_end = 0;
for (index, c) in line.iter().enumerate() {
if index < parse_end {
continue;
}
if c.is_ascii_digit() {
let mut n: Vec<char> = vec![];
n.push(*c);
if index + 1 < line.len() && line[index + 1].is_ascii_digit() {
n.push(line[index + 1]);
if index + 2 < line.len() && line[index + 2].is_ascii_digit() {
n.push(line[index + 2]);
}
}
let part_num = n
.iter()
.map(|x| x.to_string())
.collect::<Vec<String>>()
.join("")
.parse::<u32>()
.unwrap();
let mut adjacent: Vec<(usize, usize)> = vec![];
let mut left_side = index;
if index > 1 {
left_side -= 1;
}
let mut right_side = index + n.len() - 1;
if right_side < line.len() - 1 {
right_side += 1;
}
parse_end = right_side;
let mut top_side = line_index;
if top_side > 1 {
top_side -= 1;
}
let mut bottom_side = line_index;
if bottom_side + 1 <= parsed_input.len() - 1 {
bottom_side += 1;
}
adjacent.push((line_index, left_side));
adjacent.push((line_index, right_side));
for col in left_side..=right_side {
adjacent.push((top_side, col));
adjacent.push((bottom_side, col));
}
if let Some(part_coord) = adjacent.iter().find(|coord| {
!parsed_input[coord.0][coord.1].is_ascii_digit()
&& parsed_input[coord.0][coord.1] != '.'
}) {
let hash_key = (
part_coord.0,
part_coord.1,
parsed_input[part_coord.0][part_coord.1],
);
if !result.contains_key(&hash_key) {
result.insert(hash_key, vec![]);
}
let plist = result.get_mut(&hash_key).unwrap();
plist.push(part_num);
}
}
}
}
// println!("{:?}", result);
result
}
#[aoc(day3, part1)]
fn part1(input: &PartList) -> u32 {
let mut sum: u32 = 0;
for (_coord, plist) in input.iter() {
sum += plist.iter().sum::<u32>();
}
sum
}
#[aoc(day3, part2)]
fn part2(input: &PartList) -> u32 {
let mut sum: u32 = 0;
for (coord, plist) in input.iter() {
if coord.2 == '*' && plist.len() == 2 {
sum += plist.iter().product::<u32>();
}
}
sum
}
#[cfg(test)]
mod tests {
use super::*;
const SAMPLE_DATA: &'static str = r#"467..114..
...*......
..35..633.
......#...
617*......
.....+.58.
..592.....
......755.
...$.*....
.664.598..
"#;
#[test]
fn sample_data() {
let parts = associate_parts(&SAMPLE_DATA);
assert_eq!(part1(&parts), 4361);
assert_eq!(part2(&parts), 467835);
}
}

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2023/src/day04.rs Normal file
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use aoc_runner_derive::{aoc, aoc_generator};
use std::collections::HashSet;
#[derive(Debug)]
struct Card {
id: usize,
winning: HashSet<u32>,
present: HashSet<u32>,
}
impl Card {
fn matching_numbers(&self) -> Vec<&u32> {
self.winning
.intersection(&self.present)
.collect::<Vec<&u32>>()
}
}
#[aoc_generator(day4)]
fn parse(input: &str) -> Vec<Card> {
input
.lines()
.filter_map(|line| {
if !line.is_empty() {
let cparts: Vec<&str> = line.split(": ").collect();
let id = cparts[0]
.split(" ")
.collect::<Vec<&str>>()
.last()?
.trim_start()
.parse::<usize>()
.unwrap();
let cnums: Vec<&str> = cparts[1].split(" | ").collect();
let winning: HashSet<u32> = cnums[0]
.replace(" ", " ")
.trim_start()
.split(" ")
.map(|n| n.parse::<u32>().unwrap())
.collect();
let present: HashSet<u32> = cnums[1]
.replace(" ", " ")
.trim_start()
.split(" ")
.map(|n| n.parse::<u32>().unwrap())
.collect();
Some(Card {
id,
winning,
present,
})
} else {
None
}
})
.collect()
}
#[aoc(day4, part1)]
fn part1(input: &[Card]) -> i32 {
let mut sum = 0;
let base: i32 = 2;
for c in input.iter() {
let m = c.matching_numbers();
if m.is_empty() {
continue;
}
let p = base.pow(m.len() as u32 - 1);
if m.len() > 0 {
sum += p;
}
}
sum
}
#[aoc(day4, part2)]
fn part2(input: &[Card]) -> u32 {
let mut cards: [u32; 202] = [1; 202];
for i in input.len()..cards.len() {
cards[i] = 0;
}
for c in input.iter() {
let m = c.matching_numbers();
let cur = c.id - 1;
for i in 1..=m.len() {
let dest = cur + i;
if dest >= input.len() {
continue;
}
cards[dest] += cards[cur];
}
}
cards.iter().sum()
}
#[cfg(test)]
mod tests {
use super::*;
const SAMPLE_DATA: &'static str = r#"Card 1: 41 48 83 86 17 | 83 86 6 31 17 9 48 53
Card 2: 13 32 20 16 61 | 61 30 68 82 17 32 24 19
Card 3: 1 21 53 59 44 | 69 82 63 72 16 21 14 1
Card 4: 41 92 73 84 69 | 59 84 76 51 58 5 54 83
Card 5: 87 83 26 28 32 | 88 30 70 12 93 22 82 36
Card 6: 31 18 13 56 72 | 74 77 10 23 35 67 36 11
"#;
#[test]
fn sample_data() {
let cards = parse(&SAMPLE_DATA);
assert_eq!(part1(&cards), 13);
assert_eq!(part2(&cards), 30);
}
}

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2023/src/day05.rs Normal file
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use aoc_runner_derive::{aoc, aoc_generator};
use std::ops::RangeInclusive;
use std::str::Lines;
struct RangeMap {
source: RangeInclusive<u64>,
destination: RangeInclusive<u64>,
}
struct Almanac {
seeds: Vec<u64>,
seed_to_soil: Vec<RangeMap>,
soil_to_fertilizer: Vec<RangeMap>,
fertilizer_to_water: Vec<RangeMap>,
water_to_light: Vec<RangeMap>,
light_to_temperature: Vec<RangeMap>,
temperature_to_humidity: Vec<RangeMap>,
humidity_to_location: Vec<RangeMap>,
}
fn line_to_triple(input: &str) -> [u64; 3] {
let mut vals: [u64; 3] = [0; 3];
for (index, i) in input.split(" ").enumerate() {
vals[index] = i.parse::<u64>().unwrap();
}
vals
}
fn next_rangemap(lines: &mut Lines) -> Vec<RangeMap> {
let mut rm: Vec<RangeMap> = vec![];
while let Some(line) = lines.next() {
if line.is_empty() {
break;
}
let triple = line_to_triple(&line);
rm.push(RangeMap {
source: triple[1]..=(triple[1] + triple[2]),
destination: triple[0]..=(triple[0] + triple[2]),
});
}
rm
}
#[aoc_generator(day5)]
fn parse(input: &str) -> Almanac {
let mut lines = input.lines();
let seeds = lines.next().unwrap().split(": ").collect::<Vec<&str>>()[1]
.split(" ")
.map(|s| s.parse::<u64>().unwrap())
.collect();
lines.next();
lines.next();
let seed_to_soil = next_rangemap(&mut lines);
lines.next();
let soil_to_fertilizer = next_rangemap(&mut lines);
lines.next();
let fertilizer_to_water = next_rangemap(&mut lines);
lines.next();
let water_to_light = next_rangemap(&mut lines);
lines.next();
let light_to_temperature = next_rangemap(&mut lines);
lines.next();
let temperature_to_humidity = next_rangemap(&mut lines);
lines.next();
let humidity_to_location = next_rangemap(&mut lines);
Almanac {
seeds,
seed_to_soil,
soil_to_fertilizer,
fertilizer_to_water,
water_to_light,
light_to_temperature,
temperature_to_humidity,
humidity_to_location,
}
}
fn match_to(s: u64, maps: &Vec<RangeMap>) -> u64 {
if let Some(rm) = maps.iter().find(|m| m.source.contains(&s)) {
let offset = s - rm.source.start();
rm.destination.start() + offset
} else {
s
}
}
fn min_location(seeds: &Vec<u64>, input: &Almanac) -> u64 {
let locations = seeds
.iter()
.map(|s| match_to(*s, &input.seed_to_soil))
.map(|s| match_to(s, &input.soil_to_fertilizer))
.map(|s| match_to(s, &input.fertilizer_to_water))
.map(|s| match_to(s, &input.water_to_light))
.map(|s| match_to(s, &input.light_to_temperature))
.map(|s| match_to(s, &input.temperature_to_humidity))
.map(|s| match_to(s, &input.humidity_to_location))
.collect::<Vec<u64>>();
*locations.iter().min().unwrap()
}
#[aoc(day5, part1)]
fn part1(input: &Almanac) -> u64 {
min_location(&input.seeds, input)
}
#[aoc(day5, part2, bf)]
fn part2(input: &Almanac) -> u64 {
let mut seeds: Vec<u64> = vec![];
let mut index = 0;
while index < input.seeds.len() {
let start = input.seeds[index];
let count = input.seeds[index + 1];
index += 2;
for n in start..(start + count) {
seeds.push(n);
}
}
min_location(&seeds, input)
}
#[cfg(test)]
mod tests {
use super::*;
const SAMPLE_DATA: &'static str = r#"seeds: 79 14 55 13
seed-to-soil map:
50 98 2
52 50 48
soil-to-fertilizer map:
0 15 37
37 52 2
39 0 15
fertilizer-to-water map:
49 53 8
0 11 42
42 0 7
57 7 4
water-to-light map:
88 18 7
18 25 70
light-to-temperature map:
45 77 23
81 45 19
68 64 13
temperature-to-humidity map:
0 69 1
1 0 69
humidity-to-location map:
60 56 37
56 93 4
"#;
#[test]
fn sample_data() {
let maps = parse(&SAMPLE_DATA);
assert_eq!(part1(&maps), 35);
assert_eq!(part2(&maps), 46);
}
}

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2023/src/lib.rs Normal file
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use aoc_runner_derive::aoc_lib;
mod day01;
mod day02;
mod day03;
mod day04;
mod day05;
aoc_lib! { year = 2023 }

7
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extern crate aoc2023;
extern crate aoc_runner;
extern crate aoc_runner_derive;
use aoc_runner_derive::aoc_main;
aoc_main! { lib = aoc2023; }