day1 day2
This commit is contained in:
commit
4f7afcf17d
8 changed files with 5027 additions and 0 deletions
1
.gitignore
vendored
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1
.gitignore
vendored
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@ -0,0 +1 @@
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/target
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183
Cargo.lock
generated
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183
Cargo.lock
generated
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@ -0,0 +1,183 @@
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# This file is automatically @generated by Cargo.
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# It is not intended for manual editing.
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version = 3
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"autocfg",
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"cfg-if",
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"memoffset",
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"scopeguard",
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"autocfg",
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"libc",
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[[package]]
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name = "rayon"
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"either",
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"rayon-core",
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[[package]]
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dependencies = [
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"crossbeam-channel",
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"crossbeam-deque",
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"crossbeam-utils",
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"num_cpus",
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]
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[[package]]
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name = "regex"
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dependencies = [
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"aho-corasick",
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"memchr",
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"regex-syntax",
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]
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[[package]]
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name = "regex-syntax"
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[[package]]
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name = "scopeguard"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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10
Cargo.toml
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10
Cargo.toml
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@ -0,0 +1,10 @@
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[package]
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name = "aoc-2022"
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version = "0.1.0"
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edition = "2021"
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[dependencies]
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regex = "1"
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itertools = "0.10"
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rayon = "1"
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eyes = "1"
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2253
input/day1.txt
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2253
input/day1.txt
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File diff suppressed because it is too large
Load diff
2500
input/day2.txt
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2500
input/day2.txt
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File diff suppressed because it is too large
Load diff
42
src/bin/day1.rs
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42
src/bin/day1.rs
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use itertools::Itertools;
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fn main() {
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let input = std::fs::read_to_string("input/day1.txt").unwrap();
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println!("part 1: {}", part1(&input));
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println!("part 1: {}", part2(&input));
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}
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fn part1(input: &str) -> i64 {
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input
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.split("\n\n") // double newline means new elf inventory
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.map(|items| items.lines().map(|item| item.parse::<i64>().unwrap()).sum())
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.max()
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.unwrap()
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}
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fn part2(input: &str) -> i64 {
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input
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.split("\n\n") // double newline means new elf inventory
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.map(|items| {
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items
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.lines()
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.map(|item| item.parse::<i64>().unwrap())
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.sum::<i64>()
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})
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.sorted_unstable()
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.rev()
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.take(3)
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.sum::<i64>()
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}
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#[cfg(test)]
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mod tests {
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use super::*;
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#[test]
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fn examples() {
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let example = "1000\n2000\n3000\n\n4000\n\n5000\n6000\n\n7000\n8000\n9000\n\n10000";
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assert_eq!(part1(example), 24000);
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assert_eq!(part2(example), 45000);
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}
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}
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37
src/bin/day2.rs
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37
src/bin/day2.rs
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use eyes::{parse, try_parse};
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fn main() {
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let input = std::fs::read_to_string("input/day2.txt").unwrap();
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println!("part 1: {}", part1(&input));
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println!("part 1: {}", part2(&input));
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}
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fn part1(input: &str) -> i64 {
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input
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.lines()
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.map(|line| parse!(line, "{} {}", char, char))
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.map(|(them, you)| ((them as u8 - b'A') as i64, (you as u8 - b'X') as i64))
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.map(|(them, you)| ((you + 4 - them) % 3 * 3) + (you + 1)) // (outcome score) + (shape score)
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.sum::<i64>()
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}
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fn part2(input: &str) -> i64 {
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input
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.lines()
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.map(|line| parse!(line, "{} {}", char, char))
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.map(|(them, you)| ((them as u8 - b'A') as i64, (you as u8 - b'X') as i64))
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.map(|(them, you)| (you * 3) + ((you + 2 + them) % 3 + 1)) // (outcome score) + (shape score)
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.sum::<i64>()
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}
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#[cfg(test)]
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mod tests {
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use super::*;
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#[test]
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fn examples() {
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let example = "A Y\nB X\nC Z";
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assert_eq!(part1(example), 15);
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assert_eq!(part2(example), 12);
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}
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}
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1
src/lib.rs
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1
src/lib.rs
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@ -0,0 +1 @@
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