diff options
author | Justin Wernick <justin@worthe-it.co.za> | 2022-04-19 20:22:56 +0200 |
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committer | Justin Wernick <justin@worthe-it.co.za> | 2022-04-19 20:23:15 +0200 |
commit | 174772b5b8d9f5bf5e3c8e8152adfd89f0e83f6b (patch) | |
tree | a003b748ee939b30a2bcd3caf2378228baa304c1 /aoc8/src | |
parent | fd75b3fb95ad049b0025cb8fc0b3459b8f872d61 (diff) |
Refile for merging repos
Diffstat (limited to 'aoc8/src')
-rw-r--r-- | aoc8/src/main.rs | 117 |
1 files changed, 0 insertions, 117 deletions
diff --git a/aoc8/src/main.rs b/aoc8/src/main.rs deleted file mode 100644 index cb783ae..0000000 --- a/aoc8/src/main.rs +++ /dev/null @@ -1,117 +0,0 @@ -extern crate regex; -use regex::Regex; - -use std::io::BufReader; -use std::io::prelude::*; -use std::fs::File; - - -struct Screen { - data: [[bool; 6]; 50] -} - -impl Screen { - fn new() -> Screen { - Screen { - data: [[false; 6]; 50] - } - } - - fn rect(&mut self, a: usize, b: usize) { - for x in 0..a { - for y in 0..b { - self.data[x][y] = true; - } - } - } - - fn rotate_row(&mut self, y: usize, b: usize) { - let mut row_copy = [false; 50]; - for x in 0..50 { - row_copy[x] = self.data[x][y]; - } - for x in 0..50 { - self.data[x][y] = row_copy[(x+50-b)%50]; - } - } - - fn rotate_col(&mut self, x: usize, b: usize) { - let mut col_copy = [false; 6]; - for y in 0..6 { - col_copy[y] = self.data[x][y]; - } - for y in 0..6 { - self.data[x][y] = col_copy[(y+6-b)%6]; - } - } - - fn print(&self) { - for y in 0..6 { - for x in 0..50 { - print!("{}", if self.data[x][y] {'#'} else {'.'}); - } - println!(""); - } - } - - fn count_on(&self) -> u32 { - let mut count = 0; - for y in 0..6 { - for x in 0..50 { - if self.data[x][y] { - count += 1; - } - } - } - count - } -} - - -fn main() { - let lines = read_file(); - let mut screen = Screen::new(); - for line in lines { - if line.starts_with("rect") { - //rect 3x4 - let re = Regex::new(r"rect (\d+)x(\d+)").unwrap(); - let cap = re.captures(line.as_ref()).unwrap(); - println!("{} parsed as RECT. A={}, B={}", - line, - cap.at(1).unwrap_or(""), cap.at(2).unwrap_or("")); - screen.rect(cap.at(1).unwrap().parse().unwrap(), cap.at(2).unwrap().parse().unwrap()); - - } - else if line.starts_with("rotate row") { - //rotate row y=0 by 4 - let re = Regex::new(r"rotate row y=(\d+) by (\d+)").unwrap(); - let cap = re.captures(line.as_ref()).unwrap(); - println!("{} parsed as ROTATE ROW. A={}, B={}", - line, - cap.at(1).unwrap_or(""), cap.at(2).unwrap_or("")); - screen.rotate_row(cap.at(1).unwrap().parse().unwrap(), cap.at(2).unwrap().parse().unwrap()); - } - else if line.starts_with("rotate column") { - //rotate column x=1 by 1 - let re = Regex::new(r"rotate column x=(\d+) by (\d+)").unwrap(); - let cap = re.captures(line.as_ref()).unwrap(); - println!("{} parsed as ROTATE COLUMN. A={}, B={}", - line, - cap.at(1).unwrap_or(""), cap.at(2).unwrap_or("")); - screen.rotate_col(cap.at(1).unwrap().parse().unwrap(), cap.at(2).unwrap().parse().unwrap()); - - } - - screen.print(); - } - - println!("On: {}", screen.count_on()); -} - -fn read_file() -> Vec<String> { - let file = BufReader::new(File::open("input.txt").unwrap()); - file.lines() - .map(|line| line.unwrap().trim().to_string()) - .filter(|line| line.len() > 0) - .collect() -} |