51 lines
1.2 KiB
Rust
51 lines
1.2 KiB
Rust
use std::fs::File;
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use std::io::{self, BufRead};
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use std::path::Path;
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pub fn part_one() {
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if let Ok(lines) = read_lines("./input.txt") {
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let mut margin = 1;
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let mut race_results: Vec<Vec<u32>> = Vec::new();
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for line in lines {
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race_results.push(process_line(&line.unwrap()));
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}
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for i in 0..race_results[0].len() {
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margin *= process_race_result(race_results[0][i], race_results[1][i]);
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}
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println!("{:?}", margin);
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}
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}
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fn process_line(s: &str) -> Vec<u32> {
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let nums_str = s.split(':').collect::<Vec<&str>>()[1]
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.split_whitespace()
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.collect::<Vec<&str>>();
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let nums: Vec<u32> = nums_str.iter().map(|s| s.parse::<u32>().unwrap()).collect();
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return nums;
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}
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fn process_race_result(time: u32, distance: u32) -> u32 {
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let mut win_count = 0;
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for i in 0..time {
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if i * (time - i) > distance {
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win_count += 1;
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}
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}
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return win_count;
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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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let file = File::open(filename)?;
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Ok(io::BufReader::new(file).lines())
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}
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