Chapter 16, Problem 21E

Explanation of Solution

Method:

• A method is a set of code that is referred to by a name and can be called at any point in a program.
• It is a block of code that runs only when it is called.
• The method reverse that reverses the order of the elements in the list is

//Definition of method

public void reverse()

{

  //Assign front to current

    ListNode current = front;

  //Assign null to previous

    ListNode previous = null;

  //check whether the current is not null

    while (current != null)

    {

      //Assign current...