theoludwig/advent_of_code_2023
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refactor: day 1 to separate lib and main

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This commit is contained in:
Théo LUDWIG 2023-12-02 23:50:07 +01:00
parent 760686db4c
commit df6721b198
Signed by: theoludwig
GPG Key ID: ADFE5A563D718F3B
3 changed files with 80 additions and 83 deletions
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4
.editorconfig
View File

@ -9,7 +9,3 @@ end_of_line = lf
charset = utf-8
trim_trailing_whitespace = true
insert_final_newline = true
[*.txt]
trim_trailing_whitespace = unset
insert_final_newline = unset

79
day_1/src/lib.rs Normal file
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@ -0,0 +1,79 @@
pub fn part_1(input: &str) -> usize {
input
.lines()
.map(|line| {
let characters_digits = line
.chars()
.filter(|&character| character.is_ascii_digit())
.collect::<Vec<char>>();
let first_digit = characters_digits.first().unwrap_or(&'0').to_owned();
let last_digit = characters_digits.last().unwrap_or(&'0').to_owned();
let number = format!("{}{}", first_digit, last_digit);
let number: usize = number.parse().expect("Should parse as a `usize`.");
number
})
.sum()
}
pub fn part_2(input: &str) -> usize {
let numbers_spelled_out_with_letters = [
"one", "two", "three", "four", "five", "six", "seven", "eight", "nine",
];
input
.lines()
.map(|line| {
let mut characters_digits: Vec<char> = vec![];
let mut temporary = String::from("");
for character in line.chars() {
temporary += &character.to_string();
let mut temporary_spelled_number_index = None;
for (index, spelled_number) in numbers_spelled_out_with_letters.iter().enumerate() {
if temporary.contains(spelled_number) {
temporary_spelled_number_index = Some(index);
break;
}
}
if let Some(temporary_spelled_number_index) = temporary_spelled_number_index {
let number = temporary_spelled_number_index + 1;
characters_digits.push(
number
.to_string()
.chars()
.next()
.expect("Number should be single-character digit."),
);
temporary = character.to_string();
}
if character.is_ascii_digit() {
characters_digits.push(character);
temporary = String::from("");
}
}
let first_digit = characters_digits.first().unwrap_or(&'0').to_owned();
let last_digit = characters_digits.last().unwrap_or(&'0').to_owned();
let number = format!("{}{}", first_digit, last_digit);
let number: usize = number.parse().expect("Should parse as a `usize`.");
number
})
.sum()
}
#[cfg(test)]
mod day_1_tests {
use super::*;
#[test]
fn test_part_1_example() {
assert_eq!(part_1(include_str!("../input_example_1.txt")), 142);
}
#[test]
fn test_part_2_example() {
assert_eq!(part_2(include_str!("../input_example_2.txt")), 281);
}
}

80
day_1/src/main.rs
View File

@ -1,67 +1,4 @@
fn part_1(input: &str) -> i32 {
input
.lines()
.map(|line| {
let characters_digits = line
.chars()
.filter(|&character| character.is_ascii_digit())
.collect::<Vec<char>>();
let first_digit = characters_digits.first().unwrap_or(&'0').to_owned();
let last_digit = characters_digits.last().unwrap_or(&'0').to_owned();
let number = format!("{}{}", first_digit, last_digit);
let number: i32 = number.parse().expect("Should parse as a i32.");
number
})
.sum()
}
fn part_2(input: &str) -> i32 {
let numbers_spelled_out_with_letters = [
"one", "two", "three", "four", "five", "six", "seven", "eight", "nine",
];
input
.lines()
.map(|line| {
let mut characters_digits: Vec<char> = vec![];
let mut temporary = String::from("");
for character in line.chars() {
temporary += &character.to_string();
let mut temporary_spelled_number_index = None;
for (index, spelled_number) in numbers_spelled_out_with_letters.iter().enumerate() {
if temporary.contains(spelled_number) {
temporary_spelled_number_index = Some(index);
break;
}
}
if let Some(temporary_spelled_number_index) = temporary_spelled_number_index {
let number = temporary_spelled_number_index + 1;
characters_digits.push(
number
.to_string()
.chars()
.next()
.expect("Number should be single-character digit."),
);
temporary = character.to_string();
}
if character.is_ascii_digit() {
characters_digits.push(character);
temporary = String::from("");
}
}
let first_digit = characters_digits.first().unwrap_or(&'0').to_owned();
let last_digit = characters_digits.last().unwrap_or(&'0').to_owned();
let number = format!("{}{}", first_digit, last_digit);
let number: i32 = number.parse().expect("Should parse as a number.");
number
})
.sum()
}
use day_1::{part_1, part_2};
fn main() {
let input = include_str!("../input.txt");
@ -69,18 +6,3 @@ fn main() {
println!("Answer Part 1: {}", part_1(input));
println!("Answer Part 2: {}", part_2(input));
}
#[cfg(test)]
mod day_1_tests {
use super::*;
#[test]
fn test_part_1_example() {
assert_eq!(142, part_1(include_str!("../input_example_1.txt")));
}
#[test]
fn test_part_2_example() {
assert_eq!(281, part_2(include_str!("../input_example_2.txt")));
}
}