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#ifndef VECTOR_HEADER
#define VECTOR_HEADER
class vector {
private:
int* data;
size_t size;
size_t capacity;
void free();
void copyFrom(const vector&);
void resize(); // x2 memory
public:
vector();
vector(const vector&);
vector& operator=(const vector&);
size_t getSize() const;
void push_back(int);
int& operator[](size_t);
const int operator[](size_t) const;
~vector();
};
#endif
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