Day 4 Part 1 complete

This commit is contained in:
2023-12-04 06:03:29 +00:00
parent 27a646f88f
commit f3c2f6cfd8
10 changed files with 339 additions and 4 deletions

View File

@ -1,3 +1,5 @@
use std::collections::HashMap;
use super::Solution;
pub struct Day04 {}
@ -5,9 +7,42 @@ pub struct Day04 {}
impl Solution for Day04 {
fn part1(
&self,
_input: &mut Vec<String>,
input: &mut Vec<String>,
) -> Result<Box<dyn std::fmt::Display>, Box<dyn std::error::Error>> {
Ok(Box::new("Ready"))
// Remove Card XXX: at start
let cards: Vec<&str> = input
.iter()
.map(|c| c.split(":").into_iter().last().unwrap())
.collect();
let mut ans = 0;
for cards in cards {
let mut winning_numbers: HashMap<u32, bool> = HashMap::new();
let mut sep_found = false;
let mut card_nums = vec![];
for num in cards.split_whitespace() {
// Are we after the |
if num == "|" {
sep_found = true;
continue;
}
let num = num.parse::<u32>()?;
if sep_found {
if winning_numbers.contains_key(&num) {
card_nums.push(num);
}
} else {
winning_numbers.insert(num, true);
}
}
if !card_nums.is_empty() {
ans += 2u32.pow((card_nums.len() - 1) as u32);
}
}
Ok(Box::new(ans))
}
fn part2(
@ -22,7 +57,31 @@ impl Solution for Day04 {
}
}
impl Day04 {}
impl Day04 {
fn get_count_winning_numbers(card: &str) -> Result<usize, Box<dyn std::error::Error>> {
let mut winning_numbers: HashMap<u32, bool> = HashMap::new();
let mut sep_found = false;
let mut card_nums = vec![];
for num in card.split_whitespace() {
// Are we after the |
if num == "|" {
sep_found = true;
continue;
}
let num = num.parse::<u32>()?;
if sep_found {
if winning_numbers.contains_key(&num) {
card_nums.push(num);
}
} else {
winning_numbers.insert(num, true);
}
}
Ok(card_nums.len())
}
}
/// Test from puzzle input
#[cfg(test)]
@ -44,7 +103,7 @@ mod test {
.unwrap()
.to_string();
assert_eq!(answer, "Ready");
assert_eq!(answer, "13");
}
#[test]

66
src/solutions/day05.rs Normal file
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@ -0,0 +1,66 @@
use super::Solution;
pub struct Day05 {}
impl Solution for Day05 {
fn part1(
&self,
_input: &mut Vec<String>,
) -> Result<Box<dyn std::fmt::Display>, Box<dyn std::error::Error>> {
Ok(Box::new("Ready"))
}
fn part2(
&self,
_input: &mut Vec<String>,
) -> Result<Box<dyn std::fmt::Display>, Box<dyn std::error::Error>> {
Ok(Box::new("Ready"))
}
fn get_day(&self) -> u8 {
5
}
}
impl Day05 {}
/// Test from puzzle input
#[cfg(test)]
mod test {
use super::*;
use crate::*;
#[test]
fn part1() {
let challenge = day05::Day05 {};
//Complete the Challenge
let answer = challenge
.part1(
utils::get_input(challenge.get_day(), utils::InputType::Test1)
.unwrap()
.as_mut(),
)
.unwrap()
.to_string();
assert_eq!(answer, "Ready");
}
#[test]
fn part2() {
let challenge = day05::Day05 {};
//Complete the Challenge
let answer = challenge
.part2(
utils::get_input(challenge.get_day(), utils::InputType::Test2)
.unwrap()
.as_mut(),
)
.unwrap()
.to_string();
assert_eq!(answer, "Ready");
}
}

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@ -2,6 +2,7 @@ pub mod day01;
pub mod day02;
pub mod day03;
pub mod day04;
pub mod day05;
use crate::utils::{self, get_input};
use std::{error::Error, fmt::Display, time::SystemTime};