HELP WITH C++ CODE..........

How would I implement this code.

void List::insert(int index, Planet * p){

//inserts an element at index, increasing the List size by 1

//if the insert index is out of bounds, you should append to the end of the list

}

Here is the header file for doubly linked list...

#ifndef LIST_H #define LIST_H #include "Planet.h" #include class Node { friend class List; //allow list class to access private fields private: Planet *planet; Node *next; Node *prev; public: Planet* getPlanet(){return this->planet;} Node(Planet * p); };

class List{ private: Node *head; Node *tail; public: List(); ~List(); void insert(int index, Planet * p); Planet * read(int index); bool remove(int index); unsigned size(); };

#endif

Would appreciate any help!!