Adds Day 3 part 1.
This commit is contained in:
Dennis Brentjes
parent
97bf3cdf5d
commit
d5e580ad83
140
resources/input3.txt
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140
resources/input3.txt
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@ -0,0 +1,140 @@
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.854...........................................................................362...........271...732........838.........24................
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...*.............................117*...........459........767*648....#.........*...................................$...&..=................
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...128.................658.515...890#...................../...........................60..../....528..359.....451...*.....56................
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....653...............................................553.......896.......-......&...721....970.............................................
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.146.981......284.*.......*972......391.....789*...................................628*.....*....*................675.......................
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..................921..151......................983...............582......983.690.......213.137.268.............*..............24$.........
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..............................%............................$................=...963..$.....@............421*305.......*.....*........$......
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..360..........#.476...........................564../.............755*...............+..709...11.....*......909..........696..124%..........
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....................874.246.....................................+.....228..*....&.........272....%..$.....*377.....*..52..604....%..........
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.......................125.......311............715........263...........................................173...................235....291...
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13
src/main.rs
13
src/main.rs
@ -2,14 +2,15 @@ pub mod input;
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pub mod one;
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pub mod two;
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pub mod three;
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use input::AdventError;
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use one::{one_one, one_two};
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use two::{two_one, two_two};
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fn main() -> Result<(), AdventError> {
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//one_one()?;
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//one_two()?;
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two_one()?;
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Ok(two_two()?)
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one::one()?;
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one::two()?;
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two::one()?;
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two::two()?;
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three::one()?;
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Ok(three::two()?)
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}
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@ -27,7 +27,7 @@ fn process(lines: Vec::<String>) -> Result<u32, AdventError> {
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Ok(calibrations.iter().sum::<u32>())
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}
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pub fn one_one() -> Result<(), AdventError> {
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pub fn one() -> Result<(), AdventError> {
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let lines: Vec<String> = read_into_vec::<String>(Path::new("resources/input1.txt"))?;
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Ok(println!("{}", process(lines)?))
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}
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@ -35,7 +35,7 @@ pub fn one_one() -> Result<(), AdventError> {
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struct Mutation(usize, char);
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struct Pattern(&'static str, char);
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pub fn one_two() -> Result<(), AdventError> {
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pub fn two() -> Result<(), AdventError> {
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let mut lines = read_into_vec(Path::new("resources/input1.txt"))?;
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let mut mutations = Vec::<Mutation>::new();
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138
src/three/mod.rs
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138
src/three/mod.rs
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@ -0,0 +1,138 @@
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use std::{str::FromStr, path::Path, option::Option};
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use crate::input::{AdventError, read_into_vec};
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#[derive(Debug, Clone)]
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pub struct Number {
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value: u32,
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position: u8,
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length: u8
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}
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impl FromStr for RowInfo {
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type Err = AdventError;
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fn from_str(s: &str) -> Result<Self, Self::Err> {
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let mut row_info = RowInfo::new();
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for (i, b) in s.as_bytes().into_iter().enumerate() {
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row_info.process(i, b)?;
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}
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Ok(row_info.finish(s.len())?.clone())
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}
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}
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#[derive(Debug, Clone)]
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struct RowInfo {
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partial_start: Option<u8>,
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partial_number: Option<String>,
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pub symbol_positions: Vec<u8>,
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pub numbers: Vec<Number>,
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}
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impl RowInfo {
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fn new() -> Self {
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Self {
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partial_start: None,
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partial_number: None,
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symbol_positions: Vec::<u8>::new(),
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numbers: Vec::<Number>::new()
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}
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}
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fn add_symbol(&mut self, i: usize) -> Result<(), AdventError> {
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self.symbol_positions.push(i as u8);
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if self.partial_start != None {
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self.finish_digit(i)?
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}
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Ok(())
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}
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fn finish_digit(&mut self, i: usize) -> Result<(), AdventError> {
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let number = Number {
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length: i as u8 - self.partial_start.ok_or(AdventError("Expected a partial to be started.".into()))?,
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position: self.partial_start.ok_or(AdventError("Expected a partial to be started.".into()))?,
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value: self.partial_number.clone().ok_or(AdventError("Expected partial to be started and have valid value.".into()))?.trim().parse()?
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};
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self.numbers.push(number);
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self.partial_start = None;
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self.partial_number = None;
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Ok(())
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}
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fn process(&mut self, i: usize, b: &u8) -> Result<(), AdventError> {
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if b != &b'.' && !b.is_ascii_digit() {
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self.add_symbol(i)?
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}
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else if b.is_ascii_digit() {
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if self.partial_start.is_none() {
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self.partial_start = Some(i as u8);
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self.partial_number = Some((*b as char).to_string())
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} else {
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self.partial_number = Some(format!("{}{}", self.partial_number.as_ref().unwrap(), *b as char));
|
||||
}
|
||||
} else {
|
||||
if self.partial_start != None {
|
||||
self.finish_digit(i)?
|
||||
}
|
||||
}
|
||||
Ok(())
|
||||
}
|
||||
|
||||
fn finish(&mut self, i: usize) -> Result<&Self, AdventError> {
|
||||
if self.partial_start != None {
|
||||
self.finish_digit(i)?;
|
||||
}
|
||||
return Ok(self);
|
||||
}
|
||||
}
|
||||
|
||||
impl Default for RowInfo {
|
||||
fn default() -> Self {
|
||||
Self::new()
|
||||
}
|
||||
}
|
||||
|
||||
pub fn gen_coords(y: usize, number: &Number) -> Vec<(u8, u8)> {
|
||||
let mut vec = Vec::<(u8, u8)>::new();
|
||||
let min_x = if number.position == 0 {
|
||||
0
|
||||
} else {
|
||||
number.position - 1
|
||||
};
|
||||
let max_x = number.position + number.length + 1;
|
||||
for x in min_x..max_x {
|
||||
if y != 0 {
|
||||
vec.push((x, y as u8 - 1));
|
||||
}
|
||||
if x < number.position || x >= number.position + number.length {
|
||||
vec.push((x, y as u8));
|
||||
}
|
||||
vec.push((x, y as u8 + 1));
|
||||
}
|
||||
vec
|
||||
}
|
||||
|
||||
pub fn one() -> Result<(), AdventError> {
|
||||
let rows = read_into_vec::<RowInfo>(Path::new("resources/input3.txt"))?;
|
||||
let mut sum: u32 = 0;
|
||||
for (i, row) in rows.iter().enumerate() {
|
||||
for number in row.numbers.iter() {
|
||||
let coords = gen_coords(i, number);
|
||||
if coords.iter().any(|c| -> bool {
|
||||
if c.1 as usize >= rows.len() {
|
||||
false
|
||||
} else {
|
||||
rows[c.1 as usize].symbol_positions.binary_search(&c.0).is_ok()
|
||||
}
|
||||
}) {
|
||||
sum += number.value;
|
||||
}
|
||||
}
|
||||
}
|
||||
println!("{}", sum);
|
||||
Ok(())
|
||||
}
|
||||
|
||||
pub fn two() -> Result<(), AdventError> {
|
||||
Ok(())
|
||||
}
|
||||
@ -78,7 +78,7 @@ struct Game {
|
||||
}
|
||||
|
||||
|
||||
pub fn two_one() -> Result<(), AdventError> {
|
||||
pub fn one() -> Result<(), AdventError> {
|
||||
let games: Vec<Game> = read_into_vec(Path::new("resources/input2.txt"))?;
|
||||
let mut sum: u32 = 0;
|
||||
|
||||
@ -103,7 +103,7 @@ pub fn two_one() -> Result<(), AdventError> {
|
||||
Ok(println!("{}", sum))
|
||||
}
|
||||
|
||||
pub fn two_two() -> Result<(), AdventError> {
|
||||
pub fn two() -> Result<(), AdventError> {
|
||||
let games: Vec<Game> = read_into_vec(Path::new("resources/input2.txt"))?;
|
||||
let mut power: u32 = 0;
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user