Add early break condition for 2022/day12-part1

2022/day12-part1/src/main.rs

@@ -190,6 +190,13 @@ fn main() {
         // Grab a mutable borrow to the actual node.
         let current_node = map[current_vn.y][current_vn.x].borrow_mut();
 
+        // Have we reached the destination?
+        // Then we're done here.
+        if current_node.x == dest_x && current_node.y == dest_y {
+            println!("Found the destination!");
+            break;
+        }
+
         // Now iterate through all neighbors.
         for nb in &current_node.outgoing {
             // Grab a mutable borrow to that neighbor.