Complete the implementation of the method replace: public class SinglyLinkedList private Node head, public SinglyLinkedListo this(null) public SinglyLinkedList(Node head) [ this.head -head public Node getHeado return head public void setHead(Node head) [ head: this. head Method that creates a Node containing ‘item’ @param item Value to be added this.headnew Node(item, this.head) * and adds it as the first element in the list *I public void add(int item) Method that finds the node at the given index d replaces its value with the
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