updated old solutions

* splitspace is now parsing
* added  some examples(04 is syntetic)

examples/2024/01.txt

@@ -0,0 +1,6 @@
+3   4
+4   3
+2   5
+1   3
+3   9
+3   3

examples/2024/02.txt

@@ -0,0 +1,6 @@
+7 6 4 2 1
+1 2 7 8 9
+9 7 6 2 1
+1 3 2 4 5
+8 6 4 4 1
+1 3 6 7 9

examples/2024/04.txt

@@ -0,0 +1,17 @@
+S.MX
+.A.M
+S.MA
+M.MS
+.A..
+S.S.
+S.S.
+.A..
+M.M.
+M.SS
+.A.A
+M.SM
+SAMX
+....
+M...
+AA..
+S.S.

examples/2024/06.txt

@@ -0,0 +1,10 @@
+....#.....
+.........#
+..........
+..#.......
+.......#..
+..........
+.#..^.....
+........#.
+#.........
+......#...

src/bin/2024/01.rs

@@ -1,9 +1,18 @@
-use advent_of_code::strings::{convert_to_array, parsenumber, splitspace};
+use advent_of_code::strings::{convert_to_array, parsenumber};
 #[allow(unused_imports)]
 use advent_of_code::{include_data, include_example};
 
 include_data!(DATA 2024 01);
 
+pub fn splitspace(input: &str) -> (u32, u32) {
+    println!("{}", input);
+    let mut output = input.split_ascii_whitespace();
+    (
+        parsenumber(output.next().unwrap()),
+        parsenumber(output.next().unwrap()),
+    )
+}
+
 fn distance(leftlist: &Vec<u32>, rightlist: &Vec<u32>) -> u32 {
     let mut distance = 0;
     for i in 0..leftlist.len() {
@@ -38,8 +47,8 @@ fn main() {
     let mut leftlist = Vec::<u32>::with_capacity(1000);
     let mut rightlist = Vec::<u32>::with_capacity(1000);
     for (left, right) in convert_to_array::<_, _, '\n'>(DATA, splitspace) {
-        leftlist.push(parsenumber(left));
-        rightlist.push(parsenumber(right));
+        leftlist.push(left);
+        rightlist.push(right);
     }
     leftlist.sort();
     rightlist.sort();

src/bin/2024/02.rs

@@ -101,7 +101,7 @@ fn safe(record: Vec<u32>) -> bool {
 }
 
 fn main() {
-    let numbers = convert_to_array::<_,_,'\n'>(DATA, get_numbers);
+    let numbers = convert_to_array::<_, _, '\n'>(DATA, get_numbers);
     let mut safe_reports = 0;
     let mut safe_with_dampener = 0;
     for report in numbers {

src/bin/2024/03.rs

@@ -31,8 +31,8 @@ fn main() {
             ("do()", _) => parse = true,
             ("don't()", _) => parse = false,
             (_, true) => {
-                let a = parsenumber(capture.name("i").unwrap().as_str());
-                let b = parsenumber(capture.name("j").unwrap().as_str());
+                let a = parsenumber::<u32>(capture.name("i").unwrap().as_str());
+                let b = parsenumber::<u32>(capture.name("j").unwrap().as_str());
                 sum += a * b
             }
             (_, _) => {}

src/bin/2024/04.rs

@@ -1,78 +1,220 @@
-#[allow(unused_variables)]
-use std::ops::RangeInclusive;
+use std::ops::Neg;
 
+#[allow(unused_variables)]
 #[allow(unused_imports)]
 use advent_of_code::{include_data, include_example};
+use advent_of_code::{
+    matrix,
+    strings::{convert_to_array, line_to_char},
+};
 
-include_data!(DATA 2024 04);
+include_example!(DATA 2024 04);
 
-#[derive(Debug, Clone)]
-enum Direction {
-    Forward(usize, usize),
-    Backward(usize, usize),
+#[derive(Debug, Clone, Copy, PartialEq, PartialOrd, Eq, Ord)]
+struct TextPos {
+    startx: usize,
+    starty: usize,
+    endx: usize,
+    endy: usize,
+    length: usize,
 }
 
-impl Direction {
-    fn iter(&self) -> RangeInclusive<usize> {
-        let (from, to) = match self {
-            Direction::Forward(from, to) => (from, to),
-            Direction::Backward(to, from) => (from, to),
-        };
-        *from..=*to
+#[inline]
+fn dist(a: (usize, usize), b: (usize, usize)) -> (i32, i32) {
+    (a.0 as i32 - b.0 as i32, a.1 as i32 - b.1 as i32)
+}
+
+#[inline]
+fn dist_abs(a: (usize, usize), b: (usize, usize)) -> (usize, usize) {
+    let t = dist(a, b);
+    (t.0.abs() as usize, t.1.abs() as usize)
+}
+
+impl TextPos {
+    const fn center(self) -> (usize, usize) {
+        (
+            self.startx.saturating_add(self.endx).div_ceil(2),
+            self.starty.saturating_add(self.endy).div_ceil(2),
+        )
+    }
+
+    fn crossing(self, other: &&Self) -> bool {
+        if self.length != other.length && self.length != 3 {
+            todo!()
+        }
+        if self.center() != other.center() {
+            return false;
+        }
+        true
     }
 }
 
-fn main() {
-    let table: Vec<Vec<char>> = DATA
-        .split('\n')
-        .map(|line| line.chars().collect())
-        .collect();
-    let length = table[0].len();
-    let mut xmas;
-    let mut amount = 0;
-    let directions = [
-        Direction::Forward(0, length - 1),
-        Direction::Backward(0, length - 1),
+#[test]
+fn test_crossing() {
+    let cases = [
+        (
+            TextPos {
+                startx: 0,
+                starty: 0,
+                endx: 2,
+                endy: 2,
+                length: 3,
+            },
+            TextPos {
+                startx: 0,
+                starty: 0,
+                endx: 2,
+                endy: 2,
+                length: 3,
+            },
+            true,
+        ),
+        (
+            TextPos {
+                startx: 1,
+                starty: 0,
+                endx: 1,
+                endy: 2,
+                length: 3,
+            },
+            TextPos {
+                startx: 0,
+                starty: 1,
+                endx: 2,
+                endy: 1,
+                length: 3,
+            },
+            true,
+        ),
+        (
+            TextPos {
+                startx: 0,
+                starty: 0,
+                endx: 2,
+                endy: 0,
+                length: 3,
+            },
+            TextPos {
+                startx: 1,
+                starty: 0,
+                endx: 2,
+                endy: 0,
+                length: 3,
+            },
+            false,
+        ),
     ];
-    for r in directions.clone() {
-        for c in directions.clone() {
-            println!("Horizontal: {:?}, vertical: {:?}", r.clone(), c.clone());
-            for row in r.iter() {
-                xmas = 0;
-                for column in c.iter() {
-                    println!(
-                        "Row {}, Column {}, dir {:?} {:?}",
-                        row,
-                        column,
-                        r.clone(),
-                        c.clone()
-                    );
-                    match (xmas, table[row][column]) {
-                        (_x, 'X') => {
-                            xmas = 1;
-                            //println!("Found X, previous was {}", _x)
-                        }
-                        (1, 'M') => {
-                            xmas = 2;
-                            //println!("Found XM")
-                        }
-                        (2, 'A') => {
-                            xmas = 3;
-                            //println!("Found XMA")
-                        }
-                        (3, 'S') => {
-                            xmas = 0;
-                            amount += 1;
-                            //println!("found XMAS in {}:{}", row, column);
-                        }
-                        (_x, _ch) => {
-                            xmas = 0;
-                            //println!("Reset, was {}({})", _x, _ch)
+    for case in cases {
+        assert_eq!(case.0.crossing(&&case.1), case.2)
+    }
+}
+
+fn valid(x: usize, y: i32, max: usize) -> Option<usize> {
+    let tmp = if y < 0 {
+        x.checked_sub(y.neg() as usize)
+    } else {
+        x.checked_add(y as usize)
+    };
+    if let Some(xi) = tmp {
+        if xi < max {
+            return Some(xi);
+        }
+    }
+    None
+}
+
+fn validxy(
+    x: usize,
+    y: usize,
+    modx: i32,
+    mody: i32,
+    heigth: usize,
+    length: usize,
+) -> Option<(usize, usize)> {
+    if let Some(xi) = valid(x, modx, length) {
+        if let Some(yi) = valid(y, mody, heigth) {
+            return Some((xi, yi));
+        }
+    }
+    None
+}
+
+fn find_text(data: Vec<Vec<char>>, length: usize, heigth: usize, text: &str) -> (usize, usize) {
+    let first: char = text.chars().nth(0).unwrap();
+    let mut amount = 0;
+    let mut found;
+    let mut character;
+    let mut chars;
+    let mut coords = Vec::new();
+    let mut currentpos;
+    for row in 0..heigth {
+        for column in 0..length {
+            let char = data[row][column];
+            if char != first {
+                continue;
+            }
+
+            for (x, y) in matrix(false, true, true) {
+                if x == y && y == 0 {
+                    continue;
+                }
+                found = 1;
+                chars = text.chars();
+                chars.next();
+                loop {
+                    character = chars.next();
+                    if character == None {
+                        amount += 1;
+                        currentpos = TextPos {
+                            startx: row,
+                            starty: column,
+                            endx: (row as i32 + x * found) as usize,
+                            endy: (column as i32 + y * found) as usize,
+                            length: text.len(),
+                        };
+                        coords.push(currentpos);
+                        break;
+                    }
+                    if let Some((posmodx, posmody)) =
+                        validxy(row, column, x * found, y * found, length, heigth)
+                    {
+                        if data[posmodx][posmody] == character.unwrap() {
+                            found += 1;
+                        } else {
+                            break;
                         }
+                    } else {
+                        break;
                     }
                 }
             }
         }
     }
-    println!("There are {} XMAS in text", amount);
+    let mut xtexts = Vec::new();
+    for node in coords.clone() {
+        for o in coords.iter().filter(|other| node.crossing(other)) {
+            let other = *o;
+            if node == other {
+                continue;
+            }
+            let x = (node.min(other), node.max(other));
+            if !xtexts.contains(&x) {
+                xtexts.push(x);
+            }
+        }
+    }
+    println!("{:?}", xtexts);
+    (amount, xtexts.len())
+}
+
+fn main() {
+    let table = convert_to_array(DATA, line_to_char);
+    let length = table[0].len();
+    let (amount, _) = find_text(table.clone(), length, table.len(), "XMAS");
+    println!("There are {} XMAS in text", amount);
+    let (amount, amount_cross) = find_text(table.clone(), length, table.len(), "MAS");
+    println!(
+        "There are {} MAS in text, are {} crossed",
+        amount, amount_cross
+    );
 }

src/strings.rs

@@ -1,11 +1,6 @@
 use num::{pow::Pow, Integer};
 use std::ops::AddAssign;
 
-pub fn splitspace(input: &str) -> (&str, &str) {
-    let mut output = input.split_ascii_whitespace();
-    (output.next().unwrap().trim(), output.next().unwrap().trim())
-}
-
 pub fn parsenumber<T: Integer + From<u32> + Pow<u32, Output = T> + AddAssign + Copy>(
     input: &str,
 ) -> T {