feat: implement day 15

src/day14.rs

@@ -0,0 +1,111 @@
+use std::time::Instant;
+use itertools::Itertools;
+
+enum Direction{
+    North,
+    South,
+    East,
+    West
+}
+pub fn execute_task01(content: &str) {
+    let start = Instant::now();
+    let gravity_1 = solve_01(content).unwrap();
+    let duration = start.elapsed();
+
+    //assert_eq!(10165598, gravity_1);
+    println!("Day14 - Task01 - Duration: {duration:?} - One time gravity: {}", gravity_1)
+}
+
+pub fn execute_task02(content: &str) {
+    let start = Instant::now();
+    let gravity_1000000 = solve_02(content).unwrap();
+    let duration = start.elapsed();
+
+    //assert_eq!(678728808158, gravity_1000000);
+    println!("Day14 - Task02 - Duration: {duration:?} - 1 Million time gravity: {}", gravity_1000000)
+}
+
+
+fn solve_01(content: &str) -> anyhow::Result<usize> {
+    let map = content
+        .lines()
+        .map(|chars| chars.chars().collect_vec())
+        .collect_vec();
+
+
+
+
+    todo!()
+}
+
+fn solve_02(content: &str) -> anyhow::Result<usize> {
+    todo!()
+}
+
+fn move_direction(map: &Vec<Vec<char>>, direction: Direction) {
+    match direction {
+        Direction::North => {
+            let mut stones = vec![0; map.len()];
+
+            for row in 0..map.len() {
+                let width = map[row].len();
+                for col in 0..width {
+                    let char = map[row][col].clone();
+
+                    match char {
+                        '0' => {
+                            if stones[col] != row - 1 {
+
+                            }
+                        },
+                        '#' => stones[col] = row,
+                        '.' => (),
+                        _ => unreachable!()
+                    };
+                }
+            }
+
+
+        }
+        Direction::South => {}
+        Direction::East => {}
+        Direction::West => {}
+    }
+}
+
+
+#[test]
+fn test_solve_01() {
+    let example = r#"O....#....
+O.OO#....#
+.....##...
+OO.#O....O
+.O.....O#.
+O.#..O.#.#
+..O..#O..O
+.......O..
+#....###..
+#OO..#...."#;
+
+    let result = solve_01(example).unwrap();
+
+    assert_eq!(136, result);
+}
+
+#[test]
+fn test_solve_02() {
+    let example = r#"...#......
+.......#..
+#.........
+..........
+......#...
+.#........
+.........#
+..........
+.......#..
+#...#....."#;
+
+    let result = solve_02(example).unwrap();
+
+    assert_eq!(1030, result);
+}

src/day15.rs

@@ -0,0 +1,111 @@
+use std::hash::Hash;
+use std::time::Instant;
+use itertools::Itertools;
+
+#[derive(Debug, Clone)]
+struct Lens {
+    label: String,
+    hash: u32,
+    value: usize,
+}
+pub fn execute_task01(content: &str) {
+    let start = Instant::now();
+    let sum_of_hash = solve_01(content).unwrap();
+    let duration = start.elapsed();
+
+    assert_eq!(508552, sum_of_hash);
+    println!("Day15 - Task01 - Duration: {duration:?} - Sum of Hash: {}", sum_of_hash)
+}
+
+pub fn execute_task02(content: &str) {
+    let start = Instant::now();
+    let boxes_sum = solve_02(content).unwrap();
+    let duration = start.elapsed();
+
+    assert_eq!(265462, boxes_sum);
+    println!("Day15 - Task02 - Duration: {duration:?} - Sum of Baxes: {}", boxes_sum)
+}
+
+
+fn solve_01(content: &str) -> anyhow::Result<u32> {
+    Ok(content
+        .split(",")
+        .map(|part| part
+            .chars()
+            .fold(0, |sum, char| hash(sum + char as u32) ))
+        .sum())
+}
+
+
+
+fn solve_02(content: &str) -> anyhow::Result<usize> {
+    let mut boxes: Vec<Vec<Lens>> = vec![vec![]; 256];
+
+    let _ = content
+        .split(",")
+        .for_each(|part| {
+            if part.contains("=") {
+                let (label, num) = part.split_once("=").unwrap();
+                let lens = Lens{
+                    label: label.to_owned(),
+                    hash: hash_string(label),
+                    value: num.parse().unwrap(),
+                };
+                let mut lable_box = &mut boxes[lens.hash as usize];
+
+                if let Some(item) = lable_box.iter_mut().filter(|box_lens| box_lens.label == lens.label).next() { // already exists
+                    item.value = lens.value
+                } else {
+                    lable_box.push(lens)
+                }
+
+            } else { // is dash (-)
+                let label = part.replace("-", "");
+                let hash = hash_string(label.as_str());
+                let mut lable_box= &mut boxes[hash as usize];
+
+                for i in 0..lable_box.len() {
+                    let lens = &lable_box[i];
+                    if lens.label == label {
+                        lable_box.remove(i);
+                        break
+                    }
+                }
+            }
+        });
+
+    Ok(boxes
+        .iter()
+        .enumerate()
+        .filter(|(_, list)| !list.is_empty())
+        .flat_map(|(i, lenses)| lenses.iter().enumerate().map(move |(j, lens)| (i+1) * (j+1) * lens.value))
+        .sum())
+}
+
+fn hash_string(str: &str) -> u32 {
+    str
+        .chars()
+        .fold(0, |sum, char| hash(sum + char as u32) )
+}
+
+fn hash(num: u32) -> u32 {
+    num * 17 % 256
+}
+
+#[test]
+fn test_solve_01() {
+    let example = r#"rn=1,cm-,qp=3,cm=2,qp-,pc=4,ot=9,ab=5,pc-,pc=6,ot=7"#;
+
+    let result = solve_01(example).unwrap();
+
+    assert_eq!(1320, result);
+}
+
+#[test]
+fn test_solve_02() {
+    let example = r#"rn=1,cm-,qp=3,cm=2,qp-,pc=4,ot=9,ab=5,pc-,pc=6,ot=7"#;
+
+    let result = solve_02(example).unwrap();
+
+    assert_eq!(145, result);
+}

src/input/day14/input.txt

@@ -0,0 +1,100 @@
+...OO..##.......O..O....O..O#...O.OO#.#..O...O....OOO##..O##O#...#..O....#........#O.##O#..OO#..OO.O
+...#.#.#.O#...OO.#........O#.#............#...O...#...OOOO#...#..#..#.O...#..#....O.#O###..O#..OOO.O
+..##..##.O...#..OO.O.#.#O#.O.OO..#.....#.....#O##O.#..###.O.........OOOO#...O.#.........##O..O.#O.O.
+.....#.##O##.#.#O#....#.#O.....OO.#.#OO##OOOO..#O..#.#.#.O..........O.#......O...OO.........#.OO....
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+....#..#...#.##................O..OO.....##.........#...#..........#.OOO...O#..##.##.......#O..O.##.
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src/main.rs

@@ -10,6 +10,8 @@ mod day08;
 mod day09;
 mod day10;
 mod day11;
+mod day14;
+mod day15;
 
 const CONTENT01: &'static str = include_str!("input/day01/input.txt");
 const CONTENT02: &'static str = include_str!("input/day02/input.txt");
@@ -22,6 +24,8 @@ const CONTENT08: &'static str = include_str!("input/day08/input.txt");
 const CONTENT09: &'static str = include_str!("input/day09/input.txt");
 const CONTENT10: &'static str = include_str!("input/day10/input.txt");
 const CONTENT11: &'static str = include_str!("input/day11/input.txt");
+const CONTENT14: &'static str = include_str!("input/day14/input.txt");
+const CONTENT15: &'static str = include_str!("input/day15/input.txt");
 
 fn main() {
     day01::execute_task01(CONTENT01);
@@ -56,4 +60,7 @@ fn main() {
     println!();
     day11::execute_task01(CONTENT11);
     day11::execute_task02(CONTENT11);
+    println!();
+    day15::execute_task01(CONTENT15);
+    day15::execute_task02(CONTENT15);
 }