diff --git a/Code/CPP/C++/arrays/left_rotate_array_by_k(space_optimized).cpp b/Code/CPP/C++/arrays/left_rotate_array_by_k(space_optimized).cpp
new file mode 100644
index 00000000..da168a7d
--- /dev/null
+++ b/Code/CPP/C++/arrays/left_rotate_array_by_k(space_optimized).cpp
@@ -0,0 +1,32 @@
+#include <iostream>
+#include <bits/stdc++.h>
+using namespace std;
+
+void print(int arr[], int n)
+{
+    for (int i = 0; i < n; i++)
+    {
+        cout << arr[i] << " ";
+    }
+    cout << "\n";
+}
+
+void left_rotate_by_k(int arr[], int n, int k)
+{
+    k = k % n;
+    reverse(arr, arr + k);
+    reverse(arr + k, arr + n);
+    reverse(arr, arr + n);
+    print(arr, n);
+}
+
+int main()
+{
+    int n = 5;
+    int k = 2;
+    int arr[n] = {1, 2, 3, 4, 5};
+    left_rotate_by_k(arr, n, 2);
+    return 0;
+}
+// time complexity=o(n)
+// space complexity=o(1)