Code for Array Rotation.cpp

Array Rotation.cpp

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+// C++ program to rotate an array by
+// d elements
+#include <bits/stdc++.h>
+using namespace std;
+
+/*Function to left Rotate arr[] of
+  size n by 1*/
+void leftRotatebyOne(int arr[], int n)
+{
+    int temp = arr[0], i;
+    for (i = 0; i < n - 1; i++)
+        arr[i] = arr[i + 1];
+
+    arr[n-1] = temp;
+}
+
+/*Function to left rotate arr[] of size n by d*/
+void leftRotate(int arr[], int d, int n)
+{
+    for (int i = 0; i < d; i++)
+        leftRotatebyOne(arr, n);
+}
+
+/* utility function to print an array */
+void printArray(int arr[], int n)
+{
+    for (int i = 0; i < n; i++)
+        cout << arr[i] << " ";
+}
+
+/* Driver program to test above functions */
+int main()
+{
+    int arr[] = { 1, 2, 3, 4, 5, 6, 7 };
+    int n = sizeof(arr) / sizeof(arr[0]);
+
+    // Function calling
+    leftRotate(arr, 2, n);
+    printArray(arr, n);
+
+    return 0;
+}