Vector.cpp

#include "Vector.h"

#include <stdexcept>
using namespace std;
template <typename T>
void Vector<T>::resize() {
    int newCapacity = capacity * 2;
    T* newArr = new T[newCapacity];

    for (int i = 0; i < length; i++) {
        newArr[i] = arr[i];
    }

    delete[] arr;
    arr = newArr;
    capacity = newCapacity;
}

template <typename T>
Vector<T>::Vector(int initialCapacity) {
    capacity = initialCapacity;
    length = 0;
    arr = new T[capacity];
}
template <typename T>
Vector<T>::~Vector() {
    delete[] arr;
}

template <typename T>
void Vector<T>::push_back(T value) {
    if (length == capacity)
        resize();
    arr[length++] = value;
}

template <typename T>
void Vector<T>::pop_back() {
    if (length == 0)
        throw std::runtime_error("Vector is empty");
    length--;
}

template <typename T>
T& Vector<T>::operator[](int index) {
    if (index < 0 || index >= length)
        throw std::runtime_error("Index out of range");
    return arr[index];
}

template <typename T>
int Vector<T>::size() const {
    return length;
}

template <typename T>
bool Vector<T>::empty() const {
    return length == 0;
}

template <typename T>
T& Vector<T>::back() {
    if (empty())
        throw std::runtime_error("Vector is empty");
    return arr[length - 1];
}

template class Vector<int>;
template class Vector<char>;
template class Vector<float>;
template class Vector<double>;