This lab is due by Monday, June 13, 2022 11:59 PM.
As with all labs you may, and are encouraged, to pair program a solution to this lab. If you choose to pair program a solution, be sure that you individually understand how to generate the correct solution.
Instructions
You are encouraged to use your singly-linked list as the starting point for this lab.
The Doubly-Linked List Class
We are going to now make a new class called DoublyLinkedList
. This will necessitate creating a new
struct for a DoublyNode
to store the previous and next pointers.
The DoublyLinkedList
class needs to have the following public methods created:
DoublyLinkedList()
- Constructor that sets the head & tail pointers to be null and set the size to be zeroDoublyLinkedList(const DoublyLinkedList<T>& OTHER)
- Copy Constructor that performs a deep copy of the other list~DoublyLinkedList()
- Destructor that deallocates the entire list, sets the head & tail pointers to be null, sets the size to be zeroDoublyLinkedList& operator=(const DoublyLinkedList<T>& OTHER)
- Copy Assignment Operator that deallocates the existent list (if any) then performs a deep copy of the other listT at(const int POS) const
- if POS exists, returns the value at that position. Otherwise, returns the value generated by the template's default constructorvoid set(const int POS, const T VAL)
- if POS exists, sets the value at that position. Otherwise, does nothingvoid insert(const int POS, const T VAL)
- inserts a node before the given POS. If POS is negative, inserts at the beginning of the list. If POS is greater than the current size, inserts at the end of the list. Updates head, tail, and size as appropriatevoid remove(const int POS)
- removes a node at POS. If POS is out of range, then does nothing. Updates head, tail, and size as appropriateint size() const
- returns the current size of the listvoid print() const
- prints to the standard out the contents of the list using a forward traversalvoid printReverse() const
- prints to the standard out the contents of the list using a backwards traversal
To test your implementation, perform in main.cpp
the following steps in order:
- Create a doubly linked list of integers
- Add the value 6 at pos 0
- Add the value 5 at pos 0
- Add the value 7 at pos 5
- Add the value 1 at pos -3
- Add the value 2 at pos 1
- Add the value 9 at pos 2
- Add the value 3 at pos 2
- Print the list forwards (prints 1 2 3 9 5 6 7)
- Print the list backwards (prints 7 6 5 9 3 2 1)
- Set pos 3 to be 4
- Print the list forwards (prints 1 2 3 4 5 6 7)
- Remove pos -2
- Remove pos 0
- Remove pos 9
- Remove pos 5
- Remove pos 2
- Get and print pos 2 (prints 5)
- Print the size (prints 4)
- Print the list forwards (prints 2 3 5 6)
- Create a second list using the default constructor
- Print out the second list's size (should be zero)
- Assign the first list to the second list
- Print out both their sizes (should both be six)
- Add the following values to the original first list
- Add the value 1 at post 0
- Add the value 0 at post 0
- Print out both of their sizes (first should be eight, second should be six)
- Create a third list using the copy constructor and providing the original first list as the argument
- Print out all three sizes (first is eight, second six, third eight)
- Add the following values to the original first list
- Add the value 8 at post 10
- Add the value 9 at post 10
- Print out all three sizes (first is ten, second six, third eight)
- Delete all the lists to clean up the memory
Lab Submission
Submit your DoublyNode.hpp, DoublyLinkedList.hpp, main.cpp
file(s).
You will submit your solution to this lab with the rest of Set5. Detailed instructions for doing this are posted in Assignment 5.
This lab is due by Monday, June 13, 2022 11:59 PM.
As with all labs you may, and are encouraged, to pair program a solution to this lab. If you choose to pair program a solution, be sure that you individually understand how to generate the correct solution.