Need to complete the insert, operator overload and copy constructor functions

CLASS PROVIOED Prdorityueue (o prtority queue of itens) / ALIAS for the PriorltyQjeue class using Iten ) The type iten is the date type of the itens in the Priority Queue. /It nay be any of the Cre built-in types (int, char, etc.), or a class with a default canstructor, a copy constructor, and assignnent operator. CONSTRUCTOR for the PriorityQueue class: 11 PriorityQueue) 12Post condition: The PrlorityQueue has been initialized with no Items. 14 MODIFICATION MENBER FUNCTIONS for the PriorityQueue class: 15 16 // vold insert(const Itens entry, unsigned int priority) Postcondition: A new copy of entry has been inserted with the specified 17 priority. 18 19 item get front 2 Precondition: size() > 8. Postcondition: The highest priority iten has been returned and has been / removed from the PriarityQueue. (If several itens have equal priority, then the one that entered firstdil come out first.) 23 24 , 25 26 CONSTANT MEMBER FUNCTIONS for the PriorityQueue class: / size_t size( ) const Postcondition: Return value is the total number of itens in the 28 PriorityQueue. 29 I 3 bool is,empty( ) const 31 32 Postcondition: Return value is true if the PriorityQueue is empty. VALUE SEMANTICS for the PriorityQueue class: 34 35 Assignments and the copy constructor my be used with PriorityQueue objects / CLASS PROVIOED Prdorityueue (o prtority queue of itens) / ALIAS for the PriorltyQjeue class using Iten ) The type iten is the date type of the itens in the Priority Queue. /It nay be any of the Cre built-in types (int, char, etc.), or a class with a default canstructor, a copy constructor, and assignnent operator. CONSTRUCTOR for the PriorityQueue class: 11 PriorityQueue) 12Post condition: The PrlorityQueue has been initialized with no Items. 14 MODIFICATION MENBER FUNCTIONS for the PriorityQueue class: 15 16 // vold insert(const Itens entry, unsigned int priority) Postcondition: A new copy of entry has been inserted with the specified 17 priority. 18 19 item get front 2 Precondition: size() > 8. Postcondition: The highest priority iten has been returned and has been / removed from the PriarityQueue. (If several itens have equal priority, then the one that entered firstdil come out first.) 23 24 , 25 26 CONSTANT MEMBER FUNCTIONS for the PriorityQueue class: / size_t size( ) const Postcondition: Return value is the total number of itens in the 28 PriorityQueue. 29 I 3 bool is,empty( ) const 31 32 Postcondition: Return value is true if the PriorityQueue is empty. VALUE SEMANTICS for the PriorityQueue class: 34 35 Assignments and the copy constructor my be used with PriorityQueue objects /