Simple Linked List Class Using an appropriate definition of ListNode, design a si...

Simple Linked List Class

Using an appropriate definition of ListNode, design a simple linked list class with only two member functions and a default constructor:

void add(double x);

boolean isMember(double x);

LinkedList( );

The add function adds a new node containing x to the front (head) of the list, while the isMember function tests to see if the list contains a node with the value x. Test your linked list class by adding various numbers to the list and then testing for membership.