day06/Cargo.lock

@@ -1,7 +0,0 @@
-# This file is automatically @generated by Cargo.
-# It is not intended for manual editing.
-version = 3
-
-[[package]]
-name = "day06"
-version = "0.1.0"

day06/Cargo.toml

@@ -1,8 +0,0 @@
-[package]
-name = "day06"
-version = "0.1.0"
-edition = "2021"
-
-# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
-
-[dependencies]

day06/src/main.rs

@@ -1,39 +0,0 @@
-use std::collections::HashSet;
-use std::error;
-use std::fs::File;
-use std::io::prelude::*;
-
-const N_CHARS: usize = 14;
-
-fn main() -> Result<(), Box<dyn error::Error>> {
-	let mut f = File::open("input.txt")?;
-
-	let mut buf = [0; 32];
-	let mut pos = 0;
-	let mut found = false;
-	let mut n = f.read(&mut buf[(N_CHARS - 1)..])?;
-	while n > 0 {
-		for i in N_CHARS..(N_CHARS + n) {
-			pos += 1;
-			// println!("{}", std::str::from_utf8(&buf[(i - N_CHARS)..i]).unwrap());
-			// skip if we read uninitialized data from first run
-			if buf[i - N_CHARS] == 0 {
-				continue;
-			}
-			let set: HashSet<&u8> = HashSet::from_iter(&buf[(i - N_CHARS)..i]);
-			if set.len() == N_CHARS {
-				found = true;
-				break;
-			}
-		}
-		if found {
-			break;
-		}
-		for i in 0..(N_CHARS - 1) {
-			buf[i] = buf[(32 - N_CHARS + 1) + i];
-		}
-		n = f.read(&mut buf[(N_CHARS - 1)..])?;
-	}
-    println!("Found 4 different chars at position {}", pos);
-    Ok(())
-}