template <typename T>
class Vector {

  public:
    Vector();
    Vector( const unsigned ); // throws bad_alloc
    Vector( const unsigned, const T& ); // throws bad_alloc
    Vector( const Vector<T> & ); // throws bad_alloc
    ~Vector();
    void assign( const unsigned, const T& ); // throws out_of_range
    T& at( const unsigned ) const; // throws out_of_range
    unsigned capacity() const;
    void clear();
    bool empty() const;
    void insert( const unsigned, const T& ); // throws bad_alloc, out_of_range
    T& operator[]( const unsigned ) const; // throws out_of_range
    const Vector<T> &operator=( const Vector<T>& ); // throws bad_alloc
    void push_back( const T& ); // throws bad_alloc
    void resize( const unsigned, const T& = T() ); // throws bad_alloc
    unsigned size() const;
    void sort();
    void remove( const unsigned ); // throws out_of_range

  private:
    T* contents;
    unsigned sz;
    unsigned cap;

    void increaseCapacity(); // throws bad_alloc

}; // Vector<T> class