68 lines
2.0 KiB
Rust
68 lines
2.0 KiB
Rust
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use crate::common::AdventOfCodeDay;
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use std::convert::TryInto;
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#[derive(Debug)]
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struct Data {
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num1: i32,
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num2: i32,
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character: char,
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password: String,
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}
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pub struct Day02 {
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input: Vec<Data>,
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}
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impl Day02 {
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pub fn new() -> Self {
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let input_bytes = include_bytes!("../res/02_input.txt");
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let input_str = String::from_utf8_lossy(input_bytes);
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let lines = input_str
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.lines()
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.map(|p| p.split(" ").map(String::from).collect::<Vec<String>>())
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.map(|p| Data
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{
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num1: p[0].split("-").nth(0).unwrap().parse::<i32>().unwrap(),
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num2: p[0].split("-").nth(1).unwrap().parse::<i32>().unwrap(),
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character: p[1].chars().nth(0).unwrap(),
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password: p[2].to_owned(),
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})
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.collect::<Vec<Data>>();
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Self {
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input: lines
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}
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}
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}
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impl AdventOfCodeDay for Day02 {
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fn task_1(&self) -> String {
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//for v in &self.input { println!("{:?}", v); }
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return self.input.iter().filter(|p|
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{
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return (p.password.chars().filter(|c| *c == p.character).count() as i32) >= p.num1 &&
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(p.password.chars().filter(|c| *c == p.character).count() as i32) <= p.num2;
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})
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.count()
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.to_string()
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}
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fn task_2(&self) -> String {
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return self.input
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.iter()
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.filter(|p|
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{
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let c1 = ((p.password.len() as i32) > p.num1-1) && p.password.chars().nth((p.num1 - 1).try_into().unwrap()).unwrap() == p.character;
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let c2 = ((p.password.len() as i32) > p.num2-1) && p.password.chars().nth((p.num2 - 1).try_into().unwrap()).unwrap() == p.character;
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return c1 ^ c2;
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})
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.count()
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.to_string()
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}
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}
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