Checking in what remains of AoC 2022
This commit is contained in:
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634812126b
commit
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@ -2,6 +2,14 @@
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# It is not intended for manual editing.
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# It is not intended for manual editing.
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version = 3
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version = 3
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[[package]]
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name = "aoc-2022"
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version = "0.1.0"
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dependencies = [
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"nom",
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"substring",
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]
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[[package]]
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[[package]]
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name = "autocfg"
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name = "autocfg"
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version = "1.1.0"
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version = "1.1.0"
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@ -30,14 +38,6 @@ dependencies = [
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"minimal-lexical",
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"minimal-lexical",
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]
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]
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[[package]]
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name = "problems"
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version = "0.1.0"
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dependencies = [
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"nom",
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"substring",
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]
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[[package]]
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[[package]]
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name = "substring"
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name = "substring"
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version = "1.4.5"
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version = "1.4.5"
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@ -1,5 +1,5 @@
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[package]
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[package]
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name = "problems"
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name = "aoc-2022"
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version = "0.1.0"
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version = "0.1.0"
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edition = "2021"
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edition = "2021"
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use crate::matrix::Matrix;
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use nom::{
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use nom::{
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bytes::complete::tag,
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bytes::complete::tag,
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character::complete::{anychar, char, space0, space1, u8},
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character::complete::{anychar, char, space0, space1, u8},
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dest: u8,
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dest: u8,
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}
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}
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#[derive(Clone, Debug, PartialEq)]
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struct Matrix<T> {
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rows: usize,
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cols: usize,
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data: Vec<Vec<T>>,
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}
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impl<T: Clone + Copy + Debug> Matrix<T> {
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fn new(data: Vec<Vec<T>>) -> Self {
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let rows = data.len();
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let cols = data
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.iter()
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.fold(0, |max, row| std::cmp::max(max, row.len()));
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Self { rows, cols, data }
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}
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fn rotate_cw(self) -> Self {
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let mut data = Vec::new();
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for col_idx in 0..self.cols {
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let mut row = vec![];
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for row_idx in 0..self.rows {
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row.push(self.data[self.rows - row_idx - 1][col_idx]);
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}
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data.push(row);
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}
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Self {
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rows: self.cols,
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cols: self.rows,
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data,
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}
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}
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}
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#[derive(Debug)]
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#[derive(Debug)]
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struct Stack<T>(Vec<T>);
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struct Stack<T>(Vec<T>);
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@ -313,27 +280,4 @@ move 1 from 1 to 2";
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assert_eq!(tops(stacks), "CMZ");
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assert_eq!(tops(stacks), "CMZ");
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});
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});
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}
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}
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#[test]
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fn it_can_rotate_symmetrix_matrix() {
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let matrix = Matrix::new(vec![vec!['A', 'B'], vec!['C', 'D']]);
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let expected = Matrix::new(vec![vec!['C', 'A'], vec!['D', 'B']]);
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assert_eq!(matrix.rotate_cw(), expected);
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}
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#[test]
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fn it_can_rotate_asymmetric_matrix() {
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let matrix = Matrix::new(vec![
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vec![Some('A'), Some('B'), Some('C')],
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vec![Some('D'), Some('E'), Some('F')],
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]);
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let expected = Matrix::new(vec![
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vec![Some('D'), Some('A')],
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vec![Some('E'), Some('B')],
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vec![Some('F'), Some('C')],
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]);
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print_matrix(&matrix);
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print_matrix(&matrix.clone().rotate_cw());
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assert_eq!(matrix.rotate_cw(), expected);
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}
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}
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}
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use crate::matrix::Matrix;
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const INPUT: &str = include_str!("../data/day8.txt");
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pub fn part1() -> String {
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format!("{}", count_visible_trees(input(INPUT)))
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}
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pub fn part2() -> String {
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unimplemented!()
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}
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fn count_visible_trees(data: Matrix<u32>) -> usize {
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let mut cnt = 0;
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for row_idx in 0..data.rows {
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for col_idx in 0..data.cols {
|
||||||
|
if is_visible(&data, row_idx, col_idx) {
|
||||||
|
cnt = cnt + 1;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
cnt
|
||||||
|
}
|
||||||
|
|
||||||
|
fn is_visible(data: &Matrix<u32>, row_idx: usize, col_idx: usize) -> bool {
|
||||||
|
is_visible_vec(data.row(row_idx), col_idx) || is_visible_vec(data.col(col_idx), row_idx)
|
||||||
|
}
|
||||||
|
|
||||||
|
fn is_visible_vec(data: Vec<u32>, cell: usize) -> bool {
|
||||||
|
let (before, rest) = data.split_at(cell);
|
||||||
|
let (target, after) = rest.split_at(1);
|
||||||
|
let target = target[0];
|
||||||
|
let before = before.into_iter().all(|tree| *tree < target);
|
||||||
|
let after = after.into_iter().all(|tree| *tree < target);
|
||||||
|
before || after
|
||||||
|
}
|
||||||
|
|
||||||
|
fn scenic_score(data: &Matrix<u32>, row_idx: usize, col_idx: usize) -> u32 {}
|
||||||
|
|
||||||
|
fn scenic_score_vec(data: &Matrix<u32>, cell: usize) -> u32 {
|
||||||
|
let (before, rest) = data.split_at(cell);
|
||||||
|
let (target, after) = rest.split_at(1);
|
||||||
|
let target = target[0];
|
||||||
|
}
|
||||||
|
|
||||||
|
fn input(data: &str) -> Matrix<u32> {
|
||||||
|
Matrix::new(
|
||||||
|
data.lines()
|
||||||
|
.map(|line| {
|
||||||
|
line.chars()
|
||||||
|
.map(|c| c.to_digit(10).unwrap())
|
||||||
|
.collect::<Vec<u32>>()
|
||||||
|
})
|
||||||
|
.collect::<Vec<Vec<u32>>>(),
|
||||||
|
)
|
||||||
|
}
|
||||||
|
|
||||||
|
#[cfg(test)]
|
||||||
|
mod test {
|
||||||
|
use super::*;
|
||||||
|
|
||||||
|
const TEST_DATA: &str = "30373
|
||||||
|
25512
|
||||||
|
65332
|
||||||
|
33549
|
||||||
|
35390";
|
||||||
|
|
||||||
|
fn with_input<F>(test: F)
|
||||||
|
where
|
||||||
|
F: Fn(Matrix<u32>) -> () + std::panic::UnwindSafe,
|
||||||
|
{
|
||||||
|
test(input(TEST_DATA));
|
||||||
|
}
|
||||||
|
|
||||||
|
#[test]
|
||||||
|
fn it_tests_visibility() {
|
||||||
|
with_input(|forest| {
|
||||||
|
assert_eq!(is_visible(&forest, 0, 0), true);
|
||||||
|
assert_eq!(is_visible(&forest, 1, 2), true);
|
||||||
|
assert_eq!(is_visible(&forest, 1, 2), true);
|
||||||
|
assert_eq!(is_visible(&forest, 1, 3), false);
|
||||||
|
assert_eq!(is_visible(&forest, 2, 1), true);
|
||||||
|
assert_eq!(is_visible(&forest, 2, 2), false);
|
||||||
|
assert_eq!(is_visible(&forest, 2, 3), true);
|
||||||
|
assert_eq!(is_visible(&forest, 3, 1), false);
|
||||||
|
assert_eq!(is_visible(&forest, 3, 2), true);
|
||||||
|
assert_eq!(is_visible(&forest, 3, 3), false);
|
||||||
|
});
|
||||||
|
}
|
||||||
|
|
||||||
|
#[test]
|
||||||
|
fn it_counts_visible_trees() {
|
||||||
|
with_input(|forest| assert_eq!(count_visible_trees(forest), 21));
|
||||||
|
}
|
||||||
|
|
||||||
|
#[test]
|
||||||
|
fn it_solves_part1() {
|
||||||
|
let forest = input(INPUT);
|
||||||
|
assert_eq!(count_visible_trees(forest), 1533);
|
||||||
|
}
|
||||||
|
|
||||||
|
#[test]
|
||||||
|
fn it_counts_sightlines() {
|
||||||
|
with_input(|forest| assert_eq!(scenic_score(forest, 1, 2), 4));
|
||||||
|
}
|
||||||
|
}
|
|
@ -5,6 +5,8 @@ mod day4;
|
||||||
mod day5;
|
mod day5;
|
||||||
mod day6;
|
mod day6;
|
||||||
mod day7;
|
mod day7;
|
||||||
|
mod day8;
|
||||||
|
mod matrix;
|
||||||
|
|
||||||
fn main() {
|
fn main() {
|
||||||
let day = std::env::args().skip(1).next();
|
let day = std::env::args().skip(1).next();
|
||||||
|
@ -24,6 +26,8 @@ fn main() {
|
||||||
Some("6b") => day6::part2(),
|
Some("6b") => day6::part2(),
|
||||||
Some("7a") => day7::part1(),
|
Some("7a") => day7::part1(),
|
||||||
Some("7b") => day7::part2(),
|
Some("7b") => day7::part2(),
|
||||||
|
Some("8a") => day8::part1(),
|
||||||
|
Some("8b") => day8::part2(),
|
||||||
_ => panic!("unrecognized day"),
|
_ => panic!("unrecognized day"),
|
||||||
};
|
};
|
||||||
|
|
||||||
|
|
|
@ -0,0 +1,73 @@
|
||||||
|
use std::fmt::Debug;
|
||||||
|
|
||||||
|
#[derive(Clone, Debug, PartialEq)]
|
||||||
|
pub struct Matrix<T> {
|
||||||
|
pub rows: usize,
|
||||||
|
pub cols: usize,
|
||||||
|
pub data: Vec<Vec<T>>,
|
||||||
|
}
|
||||||
|
|
||||||
|
impl<T: Clone + Copy + Debug> Matrix<T> {
|
||||||
|
pub fn new(data: Vec<Vec<T>>) -> Self {
|
||||||
|
let rows = data.len();
|
||||||
|
let cols = data
|
||||||
|
.iter()
|
||||||
|
.fold(0, |max, row| std::cmp::max(max, row.len()));
|
||||||
|
Self { rows, cols, data }
|
||||||
|
}
|
||||||
|
|
||||||
|
pub fn row(&self, row_idx: usize) -> Vec<T> {
|
||||||
|
self.data[row_idx].clone()
|
||||||
|
}
|
||||||
|
|
||||||
|
pub fn col(&self, col_idx: usize) -> Vec<T> {
|
||||||
|
let mut col = Vec::new();
|
||||||
|
(0..self.rows).for_each(|row_idx| {
|
||||||
|
col.push(self.data[row_idx][col_idx]);
|
||||||
|
});
|
||||||
|
col
|
||||||
|
}
|
||||||
|
|
||||||
|
pub fn rotate_cw(self) -> Self {
|
||||||
|
let mut data = Vec::new();
|
||||||
|
for col_idx in 0..self.cols {
|
||||||
|
let mut row = vec![];
|
||||||
|
for row_idx in 0..self.rows {
|
||||||
|
row.push(self.data[self.rows - row_idx - 1][col_idx]);
|
||||||
|
}
|
||||||
|
data.push(row);
|
||||||
|
}
|
||||||
|
|
||||||
|
Self {
|
||||||
|
rows: self.cols,
|
||||||
|
cols: self.rows,
|
||||||
|
data,
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
#[cfg(test)]
|
||||||
|
mod test {
|
||||||
|
use super::*;
|
||||||
|
|
||||||
|
#[test]
|
||||||
|
fn it_can_rotate_symmetrix_matrix() {
|
||||||
|
let matrix = Matrix::new(vec![vec!['A', 'B'], vec!['C', 'D']]);
|
||||||
|
let expected = Matrix::new(vec![vec!['C', 'A'], vec!['D', 'B']]);
|
||||||
|
assert_eq!(matrix.rotate_cw(), expected);
|
||||||
|
}
|
||||||
|
|
||||||
|
#[test]
|
||||||
|
fn it_can_rotate_asymmetric_matrix() {
|
||||||
|
let matrix = Matrix::new(vec![
|
||||||
|
vec![Some('A'), Some('B'), Some('C')],
|
||||||
|
vec![Some('D'), Some('E'), Some('F')],
|
||||||
|
]);
|
||||||
|
let expected = Matrix::new(vec![
|
||||||
|
vec![Some('D'), Some('A')],
|
||||||
|
vec![Some('E'), Some('B')],
|
||||||
|
vec![Some('F'), Some('C')],
|
||||||
|
]);
|
||||||
|
assert_eq!(matrix.rotate_cw(), expected);
|
||||||
|
}
|
||||||
|
}
|
Loading…
Reference in New Issue