please answer the following questions

13.

14. you can select more than one answer.

Read the following code segment public void fun1(LinearNode head) SingleLinkedNode slow_ptr = head; SingleLinkedNode fast_ptr = head; if (head != null) \& while (fast_ptr != null && fast_ptr.getNext() != null) \{ fast_ptr = fast_ptr.getNext(0.getNext(); slow_ptr = slow_ptr.getNext(0; ] System.out.println(slow_ptr.data); \} \} Assume that there is a LinkedNode object, named head, which carries the type of int data and refers to the head of a given linked list, for example, 1>2>3>4>5, what would be output when we execute fun1(head)? 1 4 2 5 3 Which of the following is/are required to build up a generic linked node class (singly linked node or doubly linked node)? Constructor with element or parameters Default Constructor Getter/Setter for element Implementation of Generics Getter/Setter for next node Getter/Setter for previous node (Double linked node only) Getter/Setter for previous node (Singly linked node only)