add all strategy

pomelovsd/ExitMaze/Strategies/DFS.py

@@ -0,0 +1,23 @@
+from strat import PathFindingStrategy
+from path import restore
+
+
+class DFS(PathFindingStrategy):
+    def find_path(self, maze, start, exit):
+        stack = [start]
+        visited = {start}
+        parent = {}
+
+        while start:
+            current = stack.pop()
+
+            if current == exit:
+                break
+
+            for n in maze.get_neighbors(current):
+                if n not in visited:
+                    visited.add(n)
+                    parent[n] = current
+                    stack.append(n)
+
+        return self.restore(parent, start, exit), len(visited)

pomelovsd/ExitMaze/Strategies/path.py

@@ -0,0 +1,14 @@
+def restore(self, parent, start, exit):
+    if exit not in parent and start != exit:
+        return[]
+    
+    path = []
+    current = exit 
+        
+    while current != start: 
+        path.append(current)
+        current = parent[current]
+        
+    path.append(start)
+    path.reverse()
+    return path