class MyIterator
    {
    private:
        MyVector &vector;
        int i = -1;
    public:
        MyIterator() = delete;
        MyIterator(MyVector &_vector, int _i) : vector(_vector), i(_i){};
        T & operator*();
        void operator++()
        {
            if (i < 0)
                throw std::out_of_range("i < 0 in operator++");
            if(++i == (int)vector.Size)
                i = -1;
        }

        bool operator!=(const MyIterator &rhs) const
        {
            if ( !(i == -1 && rhs.i == -1) )
                return true;

            return !(&vector == &rhs.vector && i == rhs.i);
        }

        ~MyIterator() = default;
    };
    MyIterator end() { return {*this, -1}; }
    MyIterator begin() { return {*this, ((Data && Size > 0) ? 0 : -1)};} // переписать в тетрадь с пояснением.