$($Add set$-$like operations in$$LinkedList$)$ IN C$++$ PLEASE

Add and implement the following functions in LinkedList:

$//$ Add the elements in otherList to this list.

void addAll$($const LinkedList& otherList$)$;

$//$ Remove all the elements in otherList from this list

void removeAll$($const LinkedList& otherList$)$;

$//$ Retain the elements in this list if they are also in otherList

void retainAll$($const LinkedList& otherList$)$;

Add three function operators:$+,-,$ and $^$ for set union, difference, and intersection. Overload the $=$ operator to perform a deep copy of a list. Add the $[]$ operator for accessing$/$modifying an element.

When you create a new submission, you'll notice a template code that includes an implementation of the LinkedList class. Your task is to fill in the missing code part indicated by "your code here".

template

LinkedList LinkedList::operator$^($const LinkedList& other$)$ const

$\{$

$//$ your code here

$\}$

template

LinkedList LinkedList::operator$-($const LinkedList& other$)$ const

$\{$

$//$ your code here

$\}$

template

LinkedList LinkedList::operator$+($const LinkedList& other$)$ const

$\{$

$//$ your code here

$\}$

template

void LinkedList::retainAll$($const LinkedList& other$)$

$\{$

$//$ your code here

$\}$

template

void LinkedList::removeAll$($const LinkedList& other$)$

$\{$

$//$ your code here

$\}$

template

void LinkedList::addAll$($const LinkedList& other$)$

$\{$

$//$ your code here

$\}$