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Merge pull request #17 from gchazot/2023_days13-16
2023 days 13 to 16
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,297 @@ | ||
| use crate::utils; | ||
| use std::fmt; | ||
|
|
||
| #[test] | ||
| fn test_mine() { | ||
| execute() | ||
| } | ||
|
|
||
| pub fn execute() { | ||
| let mut patterns: Vec<Pattern> = utils::read_lines("src/day13/mine.txt") | ||
| .split(|line| line.len() == 0) | ||
| .map(|pattern_lines| Pattern::from_lines(pattern_lines.to_vec())) | ||
| .collect(); | ||
|
|
||
| assert_eq!(100, patterns.len()); | ||
| assert_eq!( | ||
| 28651, | ||
| patterns | ||
| .iter() | ||
| .map(|pattern| { pattern.symmetry_score().unwrap() }) | ||
| .sum::<usize>() | ||
| ); | ||
| assert_eq!( | ||
| 25450, | ||
| patterns | ||
| .iter_mut() | ||
| .map(|pattern| { pattern.new_symmetry_score().unwrap() }) | ||
| .sum::<usize>() | ||
| ); | ||
| } | ||
|
|
||
| #[derive(Clone)] | ||
| struct Pattern { | ||
| rows: Vec<Vec<bool>>, | ||
| } | ||
|
|
||
| impl fmt::Debug for Pattern { | ||
| fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { | ||
| write!( | ||
| f, | ||
| "{}", | ||
| self.rows | ||
| .iter() | ||
| .map(|row| -> String { | ||
| row.iter() | ||
| .map(|&val| -> String { | ||
| match val { | ||
| true => String::from("#"), | ||
| false => String::from("."), | ||
| } | ||
| }) | ||
| .collect::<Vec<_>>() | ||
| .join("") | ||
| }) | ||
| .collect::<Vec<_>>() | ||
| .join("\n") | ||
| ) | ||
| } | ||
| } | ||
|
|
||
| impl Pattern { | ||
| fn from_lines(lines: Vec<String>) -> Pattern { | ||
| let rows = lines | ||
| .iter() | ||
| .map(|line| line.chars().map(|ch| ch == '#').collect()) | ||
| .collect(); | ||
| Pattern { rows } | ||
| } | ||
|
|
||
| fn new_symmetry_score(&mut self) -> Option<usize> { | ||
| let orig_row_symmetries = self.row_symmetries(); | ||
| let orig_col_symmetries = self.col_symmetries(); | ||
| assert_eq!(1, orig_row_symmetries.len() + orig_col_symmetries.len()); | ||
|
|
||
| for j in 0..self.rows.len() { | ||
| for i in 0..self.rows[j].len() { | ||
| self.rows[j][i] = !self.rows[j][i]; | ||
|
|
||
| let row_symmetries: Vec<usize> = self | ||
| .row_symmetries() | ||
| .into_iter() | ||
| .filter(|row| !orig_row_symmetries.contains(row)) | ||
| .collect(); | ||
|
|
||
| if row_symmetries.len() == 1 { | ||
| return Some(row_symmetries.into_iter().sum()); | ||
| } else if row_symmetries.len() > 1 { | ||
| return None; | ||
| } | ||
|
|
||
| let col_symmetries: Vec<usize> = self | ||
| .col_symmetries() | ||
| .into_iter() | ||
| .filter(|col| !orig_col_symmetries.contains(col)) | ||
| .collect(); | ||
| if col_symmetries.len() == 1 { | ||
| return Some(col_symmetries.into_iter().sum::<usize>() * 100); | ||
| } | ||
|
|
||
| self.rows[j][i] = !self.rows[j][i]; | ||
| } | ||
| } | ||
| println!("No smudge found\n{:?}", self); | ||
| None | ||
| } | ||
|
|
||
| fn symmetry_score(&self) -> Option<usize> { | ||
| let row_symmetries = self.row_symmetries(); | ||
| let col_symmetries = self.col_symmetries(); | ||
| assert_eq!(1, row_symmetries.len() + col_symmetries.len()); | ||
|
|
||
| if row_symmetries.len() == 1 { | ||
| return Some(row_symmetries.iter().sum()); | ||
| } else if row_symmetries.len() > 1 { | ||
| return None; | ||
| } | ||
| if col_symmetries.len() == 1 { | ||
| return Some(col_symmetries.iter().sum::<usize>() * 100); | ||
| } | ||
| None | ||
| } | ||
|
|
||
| fn is_row_symmetric(&self, (x, y): (usize, usize)) -> bool { | ||
| let row = &self.rows[y]; | ||
| if x < 1 || x >= row.len() { | ||
| return false; | ||
| } | ||
|
|
||
| let mut i = 0; | ||
| while x + i < row.len() && x >= i + 1 { | ||
| if row[x + i] != row[x - i - 1] { | ||
| return false; | ||
| } | ||
| i += 1; | ||
| } | ||
| true | ||
| } | ||
|
|
||
| fn row_symmetries(&self) -> Vec<usize> { | ||
| let width = self.rows[0].len(); | ||
| let height = self.rows.len(); | ||
| assert!(self.rows.iter().all(|row| row.len() == width)); | ||
| let mut result: Vec<usize> = (1..width).collect(); | ||
| for j in 0..height { | ||
| result.retain(|&i| self.is_row_symmetric((i, j))); | ||
| } | ||
| result | ||
| } | ||
|
|
||
| fn is_col_symmetric(&self, (x, y): (usize, usize)) -> bool { | ||
| let col: Vec<bool> = self.rows.iter().map(|row| row[x]).collect(); | ||
| if y < 1 || y >= col.len() { | ||
| return false; | ||
| } | ||
|
|
||
| let mut j = 0; | ||
| while y + j < col.len() && y >= j + 1 { | ||
| if col[y + j] != col[y - j - 1] { | ||
| return false; | ||
| } | ||
| j += 1; | ||
| } | ||
| true | ||
| } | ||
|
|
||
| fn col_symmetries(&self) -> Vec<usize> { | ||
| let width = self.rows[0].len(); | ||
| assert!(self.rows.iter().all(|row| row.len() == width)); | ||
| let height = self.rows.len(); | ||
|
|
||
| let mut result: Vec<usize> = (1..height).collect(); | ||
| for i in 0..width { | ||
| result.retain(|&j| self.is_col_symmetric((i, j))); | ||
| } | ||
| result | ||
| } | ||
| } | ||
|
|
||
| #[test] | ||
| fn test_from_lines() { | ||
| assert_eq!(0, Pattern::from_lines(vec![]).rows.len()); | ||
| assert_eq!(1, Pattern::from_lines(vec!["".to_string()]).rows.len()); | ||
|
|
||
| let example1 = _example1(); | ||
|
|
||
| assert_eq!(7, example1.rows.len()); | ||
| assert_eq!(9, example1.rows.iter().map(|row| row.len()).min().unwrap()); | ||
| assert_eq!(9, example1.rows.iter().map(|row| row.len()).max().unwrap()); | ||
| assert_eq!( | ||
| vec![true, false, true, true, false, false, true, true, false], | ||
| example1.rows[0] | ||
| ); | ||
|
|
||
| let example2 = _example2(); | ||
| assert_eq!(7, example2.rows.len()); | ||
| assert_eq!(9, example2.rows.iter().map(|row| row.len()).min().unwrap()); | ||
| assert_eq!(9, example2.rows.iter().map(|row| row.len()).max().unwrap()); | ||
| assert_eq!( | ||
| vec![true, false, false, false, true, true, false, false, true], | ||
| example2.rows[0] | ||
| ); | ||
| } | ||
|
|
||
| fn _example1() -> Pattern { | ||
| Pattern::from_lines(vec![ | ||
| "#.##..##.".to_string(), | ||
| "..#.##.#.".to_string(), | ||
| "##......#".to_string(), | ||
| "##......#".to_string(), | ||
| "..#.##.#.".to_string(), | ||
| "..##..##.".to_string(), | ||
| "#.#.##.#.".to_string(), | ||
| ]) | ||
| } | ||
|
|
||
| fn _example2() -> Pattern { | ||
| Pattern::from_lines(vec![ | ||
| "#...##..#".to_string(), | ||
| "#....#..#".to_string(), | ||
| "..##..###".to_string(), | ||
| "#####.##.".to_string(), | ||
| "#####.##.".to_string(), | ||
| "..##..###".to_string(), | ||
| "#....#..#".to_string(), | ||
| ]) | ||
| } | ||
|
|
||
| #[test] | ||
| fn test_is_row_symmetric() { | ||
| let example1 = _example1(); | ||
|
|
||
| let symmetries = vec![ | ||
| (5, 0), | ||
| (7, 0), | ||
| (1, 1), | ||
| (5, 1), | ||
| (1, 2), | ||
| (5, 2), | ||
| (1, 3), | ||
| (5, 3), | ||
| (1, 4), | ||
| (5, 4), | ||
| (1, 5), | ||
| (3, 5), | ||
| (5, 5), | ||
| (7, 5), | ||
| (5, 6), | ||
| ]; | ||
|
|
||
| for j in 0..example1.rows.len() { | ||
| for i in 0..example1.rows[j].len() { | ||
| let coords = (i, j); | ||
| let result = example1.is_row_symmetric(coords); | ||
| if symmetries.contains(&coords) { | ||
| assert!(result, "{:?} is not symmetric", &coords); | ||
| } else { | ||
| assert!(!result, "{:?} is symmetric", &coords); | ||
| } | ||
| } | ||
| } | ||
| } | ||
|
|
||
| #[test] | ||
| fn test_row_symmetries() { | ||
| let example1 = _example1(); | ||
| let symmetries1 = example1.row_symmetries(); | ||
| assert_eq!(1, symmetries1.len()); | ||
| assert_eq!(5, symmetries1[0]); | ||
|
|
||
| let example2 = _example2(); | ||
| let symmetries2 = example2.row_symmetries(); | ||
| assert_eq!(0, symmetries2.len()); | ||
| } | ||
|
|
||
| #[test] | ||
| fn test_col_symmetries() { | ||
| let example1 = _example1(); | ||
| let symmetries1 = example1.col_symmetries(); | ||
| assert_eq!(0, symmetries1.len()); | ||
|
|
||
| let example2 = _example2(); | ||
| let symmetries2 = example2.col_symmetries(); | ||
| assert_eq!(1, symmetries2.len()); | ||
| assert_eq!(4, symmetries2[0]); | ||
| } | ||
|
|
||
| #[test] | ||
| fn test_new_score() { | ||
| let mut example = vec![_example1(), _example2()]; | ||
| assert_eq!( | ||
| 400, | ||
| example | ||
| .iter_mut() | ||
| .map(|pattern| { pattern.new_symmetry_score().unwrap() }) | ||
| .sum::<usize>() | ||
| ) | ||
| } |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,100 @@ | ||
| .OO.#.....#..O.O.O#....O....#....O....#..##.#...#..O....#.....O...##O...O#.O.#O.O....O......O.....OO | ||
| .......#........O...O..#.....O....O.#..#O#.#.##O.#O.#..O.O....O.###O.........#.O.O......O....#O..... | ||
| O..O.OOO....#O..#.#......OOO.#O#O.OO..#.O#.O.....O....#O.O####...##O..O....O#..O#...#..#......O..#.. | ||
| .#.#.##...#.O.#...O##..O....#........#..#.#.O...O.......#.OO...#........#...O#.#.......O..OO.OO.OO## | ||
| ....O.O.O#.....O#.OO..O...........O.OO..#.........O...O........#.OOOO..##.#....#.#..O..O#..O#.#O..OO | ||
| #.#...O##.##...#.#O.OO..O.##O.#.##O...#O#....#OOOO.O........#......O.....O#....O....O..O#.OO#.O..... | ||
| ......O..O.O...O...#..OOO##...O.OO....#......OO.#.....OOO##..##.#.#..#OOO.......#O.#....O....O...#.# | ||
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| ....O..#O...........#.O..OO##....#..................O....O.O.O.#.O.......O.O.#.....O..#O..#..#...... | ||
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| #...#.....O.#..##.......#.OO......#O..O.........O#.#O#.#..#O.O......O.O..O.OO#...O.#..O...O..O.O.... | ||
| O.#..##...O.O..O....O.O.OO......O...O.O....#..#.O.....OO...O.OO.O....O....O.O.O........O..O#...OO.O. | ||
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| ##OO.O#..#O#.....O.........O..O.#.......OO.....O...#........###.OO...O..#..OO.O#.O#O....#..##....O.O | ||
| .#OOO........O#...O.#..O.O.O..#.....#..OOO...#.....O........#.........O.O.....#.#.O.O#O.#.#...#...#. | ||
| .O.....#.#....O.O...#O..O###...O..#...#O#.O.O...........#.O....#O.OO......O....O..OO....#....#..##O# | ||
| ....#..O#...#....#.O..O.#......OOO.........O....#....O...O#......#.#...OO..O..#.#O.#......#.O.#.#... | ||
| O.O.......O.O#OOO#.O......O#.O......OO.O..O.......##O....O...#.O...O..#....###.####...OO...OO..O..OO | ||
| #..#.....O.....O..O.#....#O....O.OO..#...O.O.....O.O..#O...O#....O##...O.....#OO#..OO#..#.O..O.###.. | ||
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