diff --git a/bin/src/graph.dart b/bin/src/graph.dart
index 8778490..8cd0c20 100644
--- a/bin/src/graph.dart
+++ b/bin/src/graph.dart
@@ -478,8 +478,30 @@ class Graphs {
     path = path.reversed.toList();
 
     //print("Shortest path between vertices ${startDot+1} and ${goalDot+1} is: $path");
-    if (path[0]==startDot && path[1]==goalDot && !_dots[startDot].hasConnection(goalDot+1)) return null;
+    if (path[0] == (startDot+1) &&
+        path[1] == (goalDot+1) &&
+        !_dots[startDot].hasConnection(goalDot + 1)) return null;
     return path;
   }
+
+  List<bool>? dfsIterative(int v) {
+    v--;
+    List<bool> label = <bool>[];
+    for (int i = 0; i < _amount; i++) {
+      label.add(false);
+    }
+    List<int> stack = <int>[];
+    stack.add(v);
+    while (stack.isNotEmpty) {
+      v = stack.removeLast();
+      if (!label[v]) {
+        label[v] = true;
+        for (int i in _dots[v].getL().keys) {
+          stack.add(i-1);
+        }
+      }
+    }
+    return label;
+  }
   //************Алгоритмы************
 }