Java circular array/rotate array, A left rotation operation on an array of size shifts each of the array's elements unit to the left.

CircularArray.java

public class CircularArray {

	public static int[] arr = { 1, 2, 3, 4, 5 };

	public static void main(String[] args) {
		System.out.println(Arrays.toString(arr));
		int rotation = 4;
		rotateArray(arr, rotation);
		System.out.println(Arrays.toString(arr));
	}

	public static void rotateArray(int[] temp, int count) {
		if (count != 0) {
			int lastElementIndex = temp.length - 1;
			int element = temp[0];
			for (int j = 0; j < temp.length; j++) {
				if (j + 1 < temp.length)
					temp[j] = temp[j + 1];
			}
			temp[lastElementIndex] = element;
			count = count-1;
			rotateArray(temp, count);
		}
	}

}

Instead of the recursive function, just make the plain method and call from the for loop for the better performance