Browse Source

day 4

master
Dan Ballard 1 year ago
parent
commit
96afcc4395
  1. 1138
      inputs/04-01.txt
  2. 87
      src/aoc04/mod.rs
  3. 3
      src/lib.rs
  4. 1
      src/main.rs

1138
inputs/04-01.txt
File diff suppressed because it is too large
View File

87
src/aoc04/mod.rs

@ -0,0 +1,87 @@
use std::error::Error;
use std::fs;
use std::collections::HashMap;
use std::str;
use regex::Regex;
pub fn both(filename: &str) -> Result<(), Box<dyn Error>> {
let contents = fs::read_to_string(filename)?;
let mut valid_passports_simple = 0;
let mut valid_passports_extra = 0;
let mut passport: HashMap<&str, &str> = HashMap::new();
for line in contents.lines() {
if line.trim() == "" {
if passport.len() == 8 || (passport.len() == 7 && !passport.contains_key("cid")) {
valid_passports_simple += 1;
if validate_passport(passport) {
valid_passports_extra += 1;
}
}
passport = HashMap::new();
continue
}
let entries = line.split(" ");
for entry in entries {
let kv: Vec<&str> = entry.split(":").collect();
passport.insert(kv[0], kv[1]);
}
}
println!("Valid Passports: {}", valid_passports_simple);
println!("Extra Valid Passports: {}", valid_passports_extra);
Ok(())
}
fn validate_passport(passport: HashMap<&str, &str>) -> bool {
let byr: u32 = passport.get("byr").unwrap().parse().unwrap();
if byr < 1920 || byr > 2002 {
return false
}
let iyr: u32 = passport.get("iyr").unwrap().parse().unwrap();
if iyr < 2010 || iyr > 2020 {
return false
}
let eyr: u32 = passport.get("eyr").unwrap().parse().unwrap();
if eyr < 2020 || eyr > 2030 {
return false
}
let hgt = passport.get("hgt").unwrap();
if hgt.ends_with("cm") {
let hval: u32 = hgt.split("cm").nth(0).unwrap().parse().unwrap();
if hval < 150 || hval > 193 {
return false
}
} else if hgt.ends_with("in") {
let hval: u32 = hgt.split("in").nth(0).unwrap().parse().unwrap();
if hval < 59 || hval > 76 {
return false
}
} else {
return false
}
let hcl = passport.get("hcl").unwrap();
let hcl_re = Regex::new(r"\#[0-9a-f]{6}").unwrap();
if !hcl_re.is_match(hcl) {
return false
}
let ecl = passport.get("ecl").unwrap().trim();
if ecl.len() != 3 || !"amb blu brn gry grn hzl oth".contains(ecl) {
return false
}
let pid = passport.get("pid").unwrap();
let pid_re = Regex::new(r"^[0-9]{9}$").unwrap();
if !pid_re.is_match(pid) {
return false
}
true
}

3
src/lib.rs

@ -1,3 +1,4 @@
pub mod aoc01;
pub mod aoc02;
pub mod aoc03;
pub mod aoc03;
pub mod aoc04;

1
src/main.rs

@ -10,6 +10,7 @@ fn main() {
1 => advent_of_code::aoc01::both("./inputs/01-01.txt"),
2 => advent_of_code::aoc02::both("./inputs/02-01.txt"),
3 => advent_of_code::aoc03::both("./inputs/03-01.txt"),
4 => advent_of_code::aoc04::both("./inputs/04-01.txt"),
_ => Err(format!("unsupported day {}", day).into()),
};

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