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99e3a47d63 Update LICENSE
Forgot that the default license provided by Gitea is a template and needs to be filled out *facepalm*
2022-12-03 15:35:15 +01:00
973f6b1856 Solve Part 2 2022-12-03 11:48:08 +01:00
7fe1a60dc2 Solve Part 1 2022-12-03 11:39:53 +01:00
3 changed files with 376 additions and 3 deletions

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@ -1,4 +1,4 @@
Copyright (c) <year> <owner>
Copyright (c) 2022, apio
Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:

300
src/input.txt Normal file
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@ -1,3 +1,76 @@
fn main() {
println!("Hello, world!");
// https://adventofcode.com/2022/day/3
#![feature(iter_array_chunks)]
const DATA: &'static str = include_str!("input.txt");
fn item_priority(item: char) -> u8
{
if item.is_lowercase() {
((item.to_ascii_lowercase() as u8) - ('a'.to_ascii_lowercase() as u8)) + 1
} else {
((item.to_ascii_uppercase() as u8) - ('A'.to_ascii_uppercase() as u8)) + 27
}
}
#[allow(dead_code)]
fn part1()
{
let mut priority_sum = 0;
for slice in DATA.split("\n")
{
if slice.is_empty() { continue; }
let (left, right) = slice.split_at(slice.len() / 2);
for c in left.chars().into_iter()
{
if right.contains(c)
{
priority_sum += item_priority(c) as u32;
break;
}
}
}
println!("The sum of the priorities of duplicate item types is {}", priority_sum);
}
fn part2()
{
let mut priority_sum = 0;
for slice in DATA.split("\n").array_chunks::<3>()
{
let left = slice[0];
let mid = slice[1];
let right = slice[2];
for c in left.chars().into_iter()
{
if mid.contains(c) && right.contains(c)
{
priority_sum += item_priority(c) as u32;
break;
}
}
}
println!("The sum of the priorities of team badges is {}", priority_sum);
}
fn main()
{
//part1()
part2()
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn test_item_priority() {
assert_eq!(item_priority('a'), 1);
assert_eq!(item_priority('z'), 26);
assert_eq!(item_priority('A'), 27);
assert_eq!(item_priority('Z'), 52);
}
}