diff --git a/11 October  Reorganize The Array b/11 October  Reorganize The Array
new file mode 100644
index 0000000..a199106
--- /dev/null
+++ b/11 October  Reorganize The Array	
@@ -0,0 +1,21 @@
+class Solution {
+  public:
+    vector<int> rearrange(vector<int>& arr) {
+        // Code here
+        unordered_map<int,bool>mp;
+        int n = arr.size();
+        for(auto num : arr){
+            if(num>=0){
+                mp[num] = true;
+            }
+        }
+        for(int i = 0; i<arr.size(); i++){
+            if(mp[i]){
+                arr[i] = i;
+            }else{
+                 arr[i] = -1;
+            }
+        }
+        return arr;
+    }
+};