CyclicallyRotate.java

public class CyclicallyRotate {
    public static void main(String[] args) {
        int arr[] = { 1, 2, 3, 4, 5 };
        int k = 2;
        for (int i = 0; i < k; i++) {
            rotate(arr);
        }
        printArr(arr);
        System.out.println();

    }

    static void printArr(int[] arr) {
        for (int i = 0; i < arr.length; i++) {
            System.out.print(arr[i] + " ");
        }
    }

    // reverse loop
    static void rotate(int[] arr) {
        int last = arr[arr.length - 1];
        for (int i = arr.length - 1; i > 0; i--) {
            arr[i] = arr[i - 1];
        }
        arr[0] = last;

    }

    // using two pointer

    static void rotate1(int[] arr) {
        int i = 0, j = arr.length - 1;
        while (i != j) {
            int temp = arr[i];
            arr[i] = arr[j];
            arr[j] = temp;
            i++;
        }

    }

}