diff --git a/Reverse Array In Groups.cpp b/Reverse Array In Groups.cpp
new file mode 100644
index 0000000..d04506e
--- /dev/null
+++ b/Reverse Array In Groups.cpp	
@@ -0,0 +1,40 @@
+class Solution{
+  
+  public:
+  
+         void swap(vector<long long>&arr, int i, int j){
+           
+           int temp;
+           
+           while(i<j){
+             
+             temp = arr[i];
+             arr[i] = arr[j];
+             arr[j] = temp;
+             
+             i++;
+             j--;
+           
+           }
+         }
+  
+  // Function to reverse every sub-array group of size k.
+  
+  void reverseInGroups(vector<long long>& arr, int n , int k){
+    
+    int i = 0;
+    
+    while(i<n-k){
+      
+      swap(arr, i, i+k-1);
+      
+      i += k;
+      
+    }
+    
+    k = n%k;
+    
+    swap(arr, i , i+k-1);
+    
+  }
+};