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Write a method stutter that doubles the size of a list by replacing every integer in the list with two of that integer. For example, suppose a variable list stores the following sequence of integers:

[1, 8, 19, 4, 17]

After a call of list.stutter(), it should store the following sequence of integers:

[1, 1, 8, 8, 19, 19, 4, 4, 17, 17]

Assume that you are adding this method to the LinkedIntList class as defined below:

public class LinkedIntList {
    private ListNode front;   // null for an empty list
Type your Java solution code here:

This is a partial class exercise. Submit code that will become part of an existing Java class as described. You do not need to write the complete class, just the portion described in the problem.

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