update_solution.py

12_Route_Planner/solution.py

@@ -1,12 +1,30 @@
 def route_exists(from_row, from_column, to_row, to_column, map_matrix):
-    pass
+    rows = len(map_matrix)
+    cols = len(map_matrix[0])
 
+    stack = [(from_row, from_column)]
+    visited = set()
+
+    while stack:
+        current = stack.pop()
+        if current == (to_row, to_column):
+            return True
+        visited.add(current)
+        row, col = current
+        neighbors = [(row-1, col), (row+1, col), (row, col-1), (row, col+1)]
+        for neighbor in neighbors:
+            n_row, n_col = neighbor
+            if 0 <= n_row < rows and 0 <= n_col < cols and map_matrix[n_row][n_col] and neighbor not in visited:
+                stack.append(neighbor)
+
+    return False
 
 if __name__ == '__main__':
     map_matrix = [
         [True, False, False],
         [True, True, False],
         [False, True, True]
-    ];
+    ]
 
     print(route_exists(0, 0, 2, 2, map_matrix))
+