// Javapublic class Cell
      
        {    private K _key;    private V _value;    public Cell(K k, V v) {        _key = k;        _value = v;    }    public boolean equivalent(Cell
       
         c) {        return equivalent(c.getKey());    }    public boolean equivalent(K k) {        return key.equals(k);    }    public K getKey() { return _key; }    public V getValue() { return _value; }}
       
      

// C++template
      
       class Cell{public:    Cell(K k, V v): _key(k), _value(v) {}    bool equivalent(Cell *c) {        return equivalent(c->getKey());    }    bool equivalent(K k) {        return _key.equals(k);    }    K getKey() { return _key; }    V getValue() { return _value; }private:    K _key;    V _value;};