public static SinglyLinkedListNode insertNodeAtPosition(SinglyLinkedListNode llist, int data, int position) {
        
        
        SinglyLinkedListNode currentNode = llist;
        int index = 0;
        while(currentNode != null) {
            
            if (index == position) {
                SinglyLinkedListNode tempNode = new SinglyLinkedListNode(currentNode.data);
                tempNode.next = currentNode.next;
                currentNode.data = data;
                currentNode.next = tempNode;
                
                
            }
            
            currentNode = currentNode.next;
            index++;
        }
        
        return llist;

    }