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#include "vector.h"
#include<exception>
void vector::free() {
delete[] data;
}
void vector::copyFrom(const vector& other) {
size = other.size;
capacity = other.capacity;
data = new int[capacity];
for (int i = 0; i < size; i++)
data[i] = other.data[i];
}
void vector::resize() {
capacity = 2 * capacity;
int* newMemory = new int[capacity];
for (int i = 0; i < size; i++)
newMemory[i] = data[i];
delete[] data;
data = newMemory;
}
vector::vector() {
size = 0;
capacity = 8;
data = new int[capacity];
}
vector::vector(const vector& other) {
copyFrom(other);
}
vector& vector::operator=(const vector& other)
{
if (this != &other) {
free();
copyFrom(other);
}
return *this;
}
size_t vector::getSize() const {
return size;
}
void vector::push_back(int elem) {
if (size == capacity)
resize();
data[size++] = elem;
}
int& vector::operator[](size_t index) {
if (index >= size)
throw std::exception("out of range");
return data[index];
}
const int vector::operator[](size_t index) const {
if (index >= size)
throw std::exception("out of range");
return data[index];
}
vector::~vector() {
free();
}
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