diff --git a/Recursion/lecture 7/Fraz_recursion_7_2.java b/Recursion/lecture 7/Fraz_recursion_7_2.java
index 00a937e..3ec5996 100644
--- a/Recursion/lecture 7/Fraz_recursion_7_2.java	
+++ b/Recursion/lecture 7/Fraz_recursion_7_2.java	
@@ -3,18 +3,18 @@
 
 void helper(ArrayList<Integer> v, int i, ArrayList<Integer> subSet, ArrayList<ArrayList<Integer>> ans) {
         if (i == v.size()) {
-            ans.add(subSet);
+            ans.add(new ArrayList(subSet));
             return;
         }
         // include the ith element
         subSet.add(v.get(i));
         helper(v, i + 1, subSet, ans);
         // not including the ith element
-        subSet.remove(i);
+        subSet.remove(subSet.size()-1);
         helper(v, i + 1, subSet, ans);
 }
 
 ArrayList<ArrayList<Integer>> pwset(ArrayList<Integer> v) {
         helper(v, 0, subSet, ans);
         return ans;
-}
\ No newline at end of file
+}