Created
August 15, 2021 14:08
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Advent of Code 2020 Problem 2 Solution #1 RUST Solution
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| use scan_fmt::{scan_fmt}; | |
| use std::{fs::File, io:: {BufRead, BufReader}}; | |
| fn main(){ | |
| let file_path : String = String::from("src/input.txt"); | |
| let bufreader = BufReader::new(File::open(file_path).expect("Could not open file")); | |
| let correct_passwords = bufreader.lines().map(|_line| { | |
| match scan_fmt!(&_line.unwrap(), "{}-{} {}: {}" , i32, i32, char, String) { | |
| Ok((a, b, c, d)) => { | |
| if a <= d.chars().map(|k| { if c == k {1} else {0} } ).sum::<i32>() && b>= d.chars().map(|k| { if c == k {1} else {0} } ).sum::<i32>() { | |
| 1 | |
| } else {0} | |
| }, | |
| Err(_) => 0, | |
| } | |
| }).sum::<i32>(); | |
| println!("Correct passwords: {}", correct_passwords); | |
| } |
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