From 174772b5b8d9f5bf5e3c8e8152adfd89f0e83f6b Mon Sep 17 00:00:00 2001 From: Justin Wernick Date: Tue, 19 Apr 2022 20:22:56 +0200 Subject: Refile for merging repos --- aoc15/src/main.rs | 35 ----------------------------------- 1 file changed, 35 deletions(-) delete mode 100644 aoc15/src/main.rs (limited to 'aoc15/src/main.rs') diff --git a/aoc15/src/main.rs b/aoc15/src/main.rs deleted file mode 100644 index a7f0f64..0000000 --- a/aoc15/src/main.rs +++ /dev/null @@ -1,35 +0,0 @@ -extern crate regex; - -use regex::Regex; -use std::io::BufReader; -use std::io::prelude::*; -use std::fs::File; - - -fn main() { - let gears = read_file(); - let pass = (0..).find(|&i| can_pass(&gears, i)).expect("Reached end of infinite range without finding output"); - println!("First pass at t={}", pass); -} - -fn can_pass(gears: &Vec<(i32, i32, i32)>, time: i32) -> bool { - gears.iter().all(|&(time_offset, init_pos, gear_size)| (init_pos + time_offset + time) % gear_size == 0) -} - -fn read_file() -> Vec<(i32, i32, i32)> { - let file = BufReader::new(File::open("input.txt").unwrap()); - let line_regex = Regex::new(r"Disc #(\d+) has (\d+) positions; at time=0, it is at position (\d+).").unwrap(); - file.lines() - .filter_map(|line| { - line_regex.captures(line.unwrap().as_ref()).and_then(|cap| { - let time_offset = cap.at(1).and_then(|s| s.parse::().ok()); - let init_pos = cap.at(3).and_then(|s| s.parse::().ok()); - let gear_size = cap.at(2).and_then(|s| s.parse::().ok()); - match (time_offset, init_pos, gear_size) { - (Some(a), Some(b), Some(c)) => Some((a,b,c)), - _ => None - } - }) - }) - .collect() -} -- cgit v1.2.3