76 lines
2.1 KiB
Rust
76 lines
2.1 KiB
Rust
#![allow(dead_code)]
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use std::fs::File;
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use std::io;
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use std::io::BufRead;
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use std::path::Path;
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use std::time::Instant;
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fn main() {
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let now = Instant::now();
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part_one();
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let part_one_duration = now.elapsed();
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part_two();
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let part_two_duration = now.elapsed();
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println!(
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"p1: {}ms, p2: {}ms",
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part_one_duration.as_millis(),
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(part_two_duration - part_one_duration).as_millis()
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);
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}
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fn read_lines<P>(filename: P) -> io::Result<io::Lines<io::BufReader<File>>>
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where
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P: AsRef<Path>,
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{
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// note that this discards a final newline
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let file = File::open(filename)?;
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Ok(io::BufReader::new(file).lines())
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}
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fn part_one() {
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if let Ok(lines) = read_lines("./inputs/input") {
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let mut overlaps = 0;
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for line in lines {
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if let Ok(ranges) = line {
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let v: Vec<Vec<i8>> = ranges
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.split(",")
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.map(|r| r.split("-").map(|i| i.parse::<i8>().unwrap()).collect())
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.collect();
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// 00 ... 01
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// 10 ... 11
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if (v[0][0] <= v[1][0] && v[0][1] >= v[1][1])
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|| (v[1][0] <= v[0][0] && v[1][1] >= v[0][1])
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{
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overlaps += 1;
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}
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}
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}
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println!("{}", overlaps);
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}
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}
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fn part_two() {
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if let Ok(lines) = read_lines("./inputs/input") {
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let mut overlaps = 0;
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for line in lines {
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if let Ok(ranges) = line {
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let v: Vec<Vec<i8>> = ranges
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.split(",")
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.map(|r| r.split("-").map(|i| i.parse::<i8>().unwrap()).collect())
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.collect();
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// 00 ... 01
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// 10 ... 11
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// uuuuuugh
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if (v[0][0] <= v[1][0] && v[0][1] >= v[1][1])
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|| (v[1][0] <= v[0][0] && v[1][1] >= v[0][1])
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|| (v[0][0] <= v[1][1] && v[0][0] >= v[1][0])
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|| (v[0][1] >= v[1][0] && v[0][1] <= v[1][1])
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{
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overlaps += 1;
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}
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}
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}
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println!("{}", overlaps);
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}
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}
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