using the following partially defined intArrayList class

class intArrayList

{

public:

intArrayList& operator= (const intArrayList &);

bool isEmpty() const;

bool isFull() const;

int listSize() const;

int maxListSize() const;

void print() const;

void clearList();

int seqSearch(const int &item) const;

void insert(const int &insertItem);

void remove(const int &removeItem);

intArrayList(int size = 100);

intArrayList(const intArrayList &otherList);//copy constructor

~intArrayList();

protected:

int *list; //array to hold the list elements

int length; //to store the length of the list

int maxSize; //to store the maximum size of the list

};

a. Implement copy constructor. Explain why copy constructor is necessary?

b. Implement assignment operator overloading. Explain why it is necessary? Discuss its differences with copy constructor.

c. Implement insert function which puts an item which is not in the list. What is the order of the function?

d. Implement search function which queries an item in the list and returns the position. What is the order of the function?