#include <iostream>
#include <string>
#include <vector>
#include <utility>

class Whisper_Vector
{
public:
  Whisper_Vector() : list{}, current{}, forward{true} {}
  
  void insert(std::string const& name)
  {
    list.push_back(name);
  }

  void reset() { current = 0; forward = true; }
  bool has_next() { return current >= 0; }
  std::string& get_current() { return list.at(current); }
  void next()
  {
    if ( forward )
      ++current;
    else
      --current;

    if ( current == list.size() )
    {
      forward = false;
      --current;
    }
  }
  
private:
  std::vector<std::string> list;
  int current;
  bool forward;
};

/*
  Ska skriva ut:
  
Klas
Christoffer
Pontus
Filip
Pia
Janos
Daniel
David
David
Daniel
Janos
Pia
Filip
Pontus
Christoffer
Klas

*/
int main()
{
  Whisper_Vector l;

  l.insert("Klas");
  l.insert("Christoffer");
  l.insert("Pontus");
  l.insert("Filip");
  l.insert("Pia");
  l.insert("Janos");
  l.insert("Daniel");
  l.insert("David");

  l.reset();
  while ( l.has_next() )
  {
    std::cout << l.get_current() << std::endl;
    l.next();
  }

  return 0;
}