diff --git a/prog.cpp b/prog.cpp
index 276267c..f65fc84 100644
--- a/prog.cpp
+++ b/prog.cpp
@@ -1,3 +1,4 @@
+concept: alternate sorting means to first include lowest element followed by greatest then second smallest and so on 
 vector<int> alternateSort(int arr[], int N)
 	{
 	    vector<int> vect;
@@ -13,4 +14,4 @@ vector<int> alternateSort(int arr[], int N)
 	        vect.push_back(arr[N/2]);
 	        return vect;
 	    
-	}
\ No newline at end of file
+	}