This commit is contained in:
Dory 2024-03-07 09:51:55 -08:00
parent 8ea82daa5c
commit ab9d8fb2b1
5 changed files with 353 additions and 0 deletions

7
day3/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 = "day3"
version = "0.1.0"

8
day3/Cargo.toml Normal file
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[package]
name = "day3"
version = "0.1.0"
edition = "2021"
# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
[dependencies]

300
day3/input.txt Normal file
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day3/src/main.rs Normal file
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use std::env;
use std::fs;
use std::collections::HashSet;
fn main() {
let input = fs::read_to_string(&env::args().nth(1).unwrap()).unwrap();
let mut sum: u64 = 0;
for line in input.lines() {
let mut left_chars: HashSet<char> = HashSet::new();
let mut dupe_chars: HashSet<char> = HashSet::new();
for (i, c) in line.char_indices() {
if i < line.len()/2 {
left_chars.insert(c);
} else if left_chars.contains(&c) {
dupe_chars.insert(c);
}
}
for c in dupe_chars {
if c >= 'a' && c <= 'z' {
sum += (c as u64) - ('a' as u64) + 1;
} else {
sum += (c as u64) - ('A' as u64) + 27;
}
}
}
println!("{:?}", sum);
}

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day3/test.txt Normal file
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