How do you implement a linked list with elements that are NOT self-referential

Java's LinkedList provides a method listlterator(int index) returning a Listlterator for a list. Declare a variable of LinkedList of integer numbers and write a fragment of Java code to compute and print the sum of the numbers on the list. Do not write code to insert elements to the list and assume that the list already has elements on it. You must only use an iterator obtained from the list (you can not use the get(int index) method) .

Suppose you have created a new class: SortedLinkedList. This class is derived from LinkedList (single links). You are asked to overload the method Insert. The method Insert will no longer take in a parameter position, this is because now Insert will place the element in the correct position such that the list is always sorted. Write the C++ code for the implementation of that Insert method.