Your Tasks

The BilinkedList$280$ and BilinkedIterator$280$ classes in lib$280-$asn$1$ are incomplete. There

are missing method bodies in each class. Each missing method body is tagged with a $//$ TODO comment. Write code to implement each of these unfinished method.

Implementation Notes

The javadoc headers for each method explain what each method is supposed to do$3$

$.$ Many of the

methods you must implement override methods of the LinkedList$280$ superclass.

Add your code right into the existing files within the lib$280-$asn$1$ module.

When implementing the methods, consider carefully any special cases that might cause need to update

the cursor position, or ensure that it remains in a valid state.

You are not permitted to modify any existing code in the $.$java files given. You may only fill in the

missing method bodies.