day03/Cargo.lock

@@ -1,7 +0,0 @@
-# This file is automatically @generated by Cargo.
-# It is not intended for manual editing.
-version = 3
-
-[[package]]
-name = "day03"
-version = "0.1.0"

day03/Cargo.toml

@@ -1,8 +0,0 @@
-[package]
-name = "day03"
-version = "0.1.0"
-edition = "2021"
-
-# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
-
-[dependencies]

day03/src/main.rs

@@ -1,36 +0,0 @@
-use std::collections::HashSet;
-use std::error;
-use std::fs::File;
-use std::io::BufRead;
-use std::io::BufReader;
-
-
-fn set_from_str(chars: &str) -> HashSet<u32> {
-	HashSet::from_iter(chars.chars().map(|c| if c.is_uppercase() { c as u32 - 38 } else { c as u32 - 96 }))
-}
-
-
-fn main() -> Result<(), Box<dyn error::Error>> {
-	let f = File::open("input.txt")?;
-	let reader = BufReader::new(f);
-
-	let mut sum: u32 = 0;
-	let mut group_items: HashSet<u32> = HashSet::new();
-
-	for (i, line) in reader.lines().enumerate() {
-		let line = line?;
-		if group_items.is_empty() {
-			group_items = set_from_str(line.as_str());
-		} else {
-			group_items = set_from_str(line.as_str()).intersection(&group_items).cloned().collect();
-		}
-		if (i + 1) % 3 == 0 {
-			sum += group_items.iter().next().unwrap();
-			group_items.drain();
-		}
-	}
-
-	println!("{}", sum);
-
-    Ok(())
-}