Rename 2 sum cpp.md to 2 sum cpp.cpp

DARKcoder37 · web-flow · commit 4b80b8a0661c · 2023-02-26T18:29:37.000+05:30
diff --git a/1) 2 sum (easy)/2 sum cpp.cpp b/1) 2 sum (easy)/2 sum cpp.cpp
@@ -43,4 +43,4 @@ class Solution {
         }
         return ret;
     }
-}; //O(n)
+}; //O(n)
