diff --git a/Solution.py b/Solution.py
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+Problem 1:  https://www.geeksforgeeks.org/find-the-missing-number-in-a-sorted-array/
+Time Complexity : O(n)
+Space Complexity: O(1)
+
+for i in range(len(arr)):
+            idx = abs(arr[i])-1
+            if 0 <= idx < len(arr) and arr[idx] > 0:
+                arr[idx] *=-1
+        
+        for i in range(len(arr)):
+            if arr[i]>0:
+                return i+1
+        
+        return len(arr)+1
+
+
+Problem 2 : https://www.geeksforgeeks.org/min-heap-in-java/
+
+## Need to figure out the question. To be continued