81 lines
1.9 KiB
Rust
81 lines
1.9 KiB
Rust
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use crate::common::AdventOfCodeDay;
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use std::collections::HashSet;
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use regex::Regex;
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#[derive(Debug)]
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struct DeclForm {
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answers: HashSet<char>,
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}
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#[derive(Debug)]
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struct Group {
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forms: Vec<DeclForm>,
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}
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#[derive(Debug)]
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pub struct Day06 {
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groups: Vec<Group>,
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}
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fn parse_form(line: &str) -> DeclForm {
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DeclForm {
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answers: line.chars().collect(),
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}
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}
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fn parse_group(lines: &str) -> Group {
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Group {
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forms: lines.lines().map(parse_form).collect(),
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}
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}
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impl DeclForm {
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fn contains(&self, c: char) -> bool {
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self.answers.contains(&c)
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}
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}
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impl Group {
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pub fn all_questions_any_yes(&self) -> Vec<char> {
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self.forms.iter().map(|p| p.answers.iter().collect::<Vec<&char>>()).flatten().collect::<HashSet<&char>>().iter().map(|p| **p).collect()
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}
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pub fn all_questions_all_yes(&self) -> Vec<char> {
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self.forms[0].answers.iter().filter(|p| self.forms.iter().all(|f| f.contains(**p))).map(|p| *p).collect()
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}
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}
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impl Day06 {
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pub fn new() -> Self {
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let input_bytes = include_bytes!("../res/06_input.txt");
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let input_str = String::from_utf8_lossy(input_bytes);
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let rex_lines = Regex::new(r"(\r?\n){2}").unwrap();
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let data = rex_lines.split(&input_str.to_owned())
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.map(parse_group)
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.collect::<Vec<Group>>();
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Self {
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groups: data,
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}
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}
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}
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impl AdventOfCodeDay for Day06 {
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fn task_1(&self) -> String {
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if is_verbose!() {
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for r in &self.groups {
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verboseln!("{} {:?}", r.all_questions_any_yes().len(), r.all_questions_any_yes())
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}
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}
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return self.groups.iter().map(|p| p.all_questions_any_yes().len()).sum::<usize>().to_string();
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}
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fn task_2(&self) -> String {
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return self.groups.iter().map(|p| p.all_questions_all_yes().len()).sum::<usize>().to_string();
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}
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}
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