rotate array.java

class javachallenge {
    public static int[] rotate(int[] arr) {

        int k = 2;
        int[] nums = arr;
        int length = nums.length;
		int left = length - (k % length);
		int right = k % length;
		int[] newArr = new int[length];

		System.arraycopy(nums, left, newArr, 0, right);

		System.arraycopy(nums, 0, newArr, right, left);
		System.arraycopy(newArr, 0, nums, 0, length);

        return newArr; 
    }
}