Move Day 6 to its own crate
This commit is contained in:
parent
b905d7f7fd
commit
c04c7adfd2
4 changed files with 26 additions and 15 deletions
7
2022/day6/Cargo.lock
generated
Normal file
7
2022/day6/Cargo.lock
generated
Normal file
|
@ -0,0 +1,7 @@
|
||||||
|
# This file is automatically @generated by Cargo.
|
||||||
|
# It is not intended for manual editing.
|
||||||
|
version = 3
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "day6"
|
||||||
|
version = "0.1.0"
|
8
2022/day6/Cargo.toml
Normal file
8
2022/day6/Cargo.toml
Normal file
|
@ -0,0 +1,8 @@
|
||||||
|
[package]
|
||||||
|
name = "day6"
|
||||||
|
version = "0.1.0"
|
||||||
|
edition = "2021"
|
||||||
|
|
||||||
|
# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
|
||||||
|
|
||||||
|
[dependencies]
|
|
@ -1,28 +1,26 @@
|
||||||
use std::collections::HashSet;
|
use std::collections::HashSet;
|
||||||
use std::fs::File;
|
use std::env;
|
||||||
use std::io::{BufRead, BufReader};
|
use std::fs;
|
||||||
|
|
||||||
pub fn main(filename: &str) -> std::io::Result<()> {
|
fn main() {
|
||||||
let file = File::open(filename)?;
|
let args: Vec<String> = env::args().collect();
|
||||||
let reader = BufReader::new(file);
|
|
||||||
|
|
||||||
let file_contents: Vec<char> = reader
|
let filename = args.get(1).expect("Missing filename argument");
|
||||||
|
|
||||||
|
let file_contents = fs::read_to_string(&filename).expect("Unable to read file");
|
||||||
|
let character_stream: Vec<char> = file_contents
|
||||||
.lines()
|
.lines()
|
||||||
.map(|l| {
|
.map(|l| l.chars().collect::<Vec<char>>())
|
||||||
l.expect("Couldn't read line")
|
|
||||||
.chars()
|
|
||||||
.collect::<Vec<char>>()
|
|
||||||
})
|
|
||||||
.flatten()
|
.flatten()
|
||||||
.collect();
|
.collect();
|
||||||
|
|
||||||
let (sop_offset, start_of_packet_marker) = file_contents
|
let (sop_offset, start_of_packet_marker) = character_stream
|
||||||
.windows(4)
|
.windows(4)
|
||||||
.enumerate()
|
.enumerate()
|
||||||
.find(|(_, w)| HashSet::<&char>::from_iter(w.iter()).len() == 4)
|
.find(|(_, w)| HashSet::<&char>::from_iter(w.iter()).len() == 4)
|
||||||
.expect("Couldn't find start-of-packet marker");
|
.expect("Couldn't find start-of-packet marker");
|
||||||
|
|
||||||
let (sow_offset, start_of_window_marker) = file_contents
|
let (sow_offset, start_of_window_marker) = character_stream
|
||||||
.windows(14)
|
.windows(14)
|
||||||
.enumerate()
|
.enumerate()
|
||||||
.find(|(_, w)| HashSet::<&char>::from_iter(w.iter()).len() == 14)
|
.find(|(_, w)| HashSet::<&char>::from_iter(w.iter()).len() == 14)
|
||||||
|
@ -47,6 +45,4 @@ pub fn main(filename: &str) -> std::io::Result<()> {
|
||||||
.join(""),
|
.join(""),
|
||||||
sow_offset + 14
|
sow_offset + 14
|
||||||
);
|
);
|
||||||
|
|
||||||
Ok(())
|
|
||||||
}
|
}
|
Loading…
Add table
Add a link
Reference in a new issue