This class expands on the previous linked list class by including a list size member variable. This member must be updated whenever a node is added to or removed from the linked list, and the functionality of some member functions can be simplified.
class Linked_list {
public:
Linked_list(); // Constructor
~Linked_list(); // Destructor
bool empty() const;
std::size_t size() const;
double front() const;
std::string to_string() const;
std::size_t find( double const value ) const;
double operator[]( std::size_t const n ) const;
void push_front( double const new_value );
void pop_front();
void clear();
private:
Node *p_list_head_; // Pointer to head node
std:size_t size_; // Number of nodes in the linked list
};
View this simple linked list at repl.it.
The class declarations and definitions are in the corresponding Linked_list.hpp file.