To solve the below problem, you must use recursion. UNDER NO CIRCUMSTANCES SHOULD YOU USE A LOOP or a global variable.

Code should be in java thank you!

public int sumOfSquares (ArrayList num) This method takes an ArrayList of integers and returns the sum of the squares of each element of the ArrayList. In addition, these squares of each element are added to the ArrayList after the element. If the ArrayList is empty, a zero is returned and no numbers are added to the ArrayList. If an ArrayList containing 1, 2, and 3 is passed to the method, the method would return 14 back as an integer. In addition, the ArrayList would now have 6 elements instead of 3 and would contain in order: 1, 1, 2, 4, 3,9