day_10: part 1 done

README.md

@@ -12,7 +12,7 @@ https://adventofcode.com/2024
 | 07 | Bridge Repair | :pushpin: | :pushpin: | Equation parsing |
 | 08 | Resonant Collinearity | :pushpin: |  | Matrix exploration |
 | 09 | Disk fragmenter | :pushpin: |  | Array indexing |
-| 10 | Hoof It |  |  | |
+| 10 | Hoof It | :pushpin: |  | Path finding |
 | 11 |  |  |  | |
 | 12 |  |  |  | |
 | 13 |  |  |  | |

assets/day_10_trail_map_input

@@ -1,8 +1,44 @@
-89010123
-78121874
-87430965
-96549874
-45678903
-32019012
-01329801
-10456732
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src/advent_of_code/tue_10.rs

@@ -9,7 +9,6 @@ pub fn hoof_it(input: &str) -> usize {
 
     let mut sum_of_scores: usize = 0;
 
-    println!("The score list is: {:?}", vector_of_scores);
     // TODO: improve, this is dirty
     for score in vector_of_scores {
         sum_of_scores += score;
@@ -24,7 +23,8 @@ pub fn explore_map(map: TrailMap) -> Vec<TrailScore> {
     for y_index in 0..map.len() {
         for x_index in 0..map[y_index].len() {
             if map[y_index][x_index] == 0 {
-                trail_score_list.push(explore_position(x_index, y_index, &map));
+                let mut reached_ends: Vec<(usize, usize)> = vec![];
+                trail_score_list.push(explore_position(x_index, y_index, &map, &mut reached_ends));
             }
         }
     }
@@ -32,15 +32,23 @@ pub fn explore_map(map: TrailMap) -> Vec<TrailScore> {
     trail_score_list
 }
 
-pub fn explore_position(x: TrailPosition, y: TrailPosition, map: &TrailMap) -> usize {
+pub fn explore_position(
+    x: TrailPosition,
+    y: TrailPosition,
+    map: &TrailMap,
+    reached_ends: &mut Vec<(usize, usize)>,
+) -> usize {
     if map[y][x] == 9 {
+        reached_ends.push((x, y));
         return 1;
     }
 
     let mut score_sum: usize = 0;
     for next_position in get_pos_surroundings(x, y, map) {
-        if map[next_position.1][next_position.0] == map[y][x] + 1 {
-            score_sum += explore_position(next_position.0, next_position.1, map);
+        if map[next_position.1][next_position.0] == map[y][x] + 1
+            && !reached_ends.contains(&(next_position.0, next_position.1))
+        {
+            score_sum += explore_position(next_position.0, next_position.1, map, reached_ends);
         }
     }
 
@@ -57,24 +65,24 @@ pub fn get_pos_surroundings(
     if x > 0 {
         trail_pos_vec.push((x - 1, y));
 
-        if y > 0 {
-            trail_pos_vec.push((x - 1, y - 1));
-        }
-        if y < map.len() - 1 {
-            trail_pos_vec.push((x - 1, y + 1));
-        }
+        // if y > 0 {
+        //     trail_pos_vec.push((x - 1, y - 1));
+        // }
+        // if y < map.len() - 1 {
+        //     trail_pos_vec.push((x - 1, y + 1));
+        // }
     }
 
     if x < map[0].len() - 1 {
         trail_pos_vec.push((x + 1, y));
 
-        if y > 0 {
-            trail_pos_vec.push((x + 1, y - 1));
-        }
-
-        if y < map.len() - 1 {
-            trail_pos_vec.push((x + 1, y + 1));
-        }
+        // if y > 0 {
+        //     trail_pos_vec.push((x + 1, y - 1));
+        // }
+        //
+        // if y < map.len() - 1 {
+        //     trail_pos_vec.push((x + 1, y + 1));
+        // }
     }
 
     if y > 0 {