array.cpp

#include "array.h"
#include <stdexcept>

array::array() :
  n(0),
  p(nullptr)
{
}

array::array(array&& array) :
  p(nullptr), n(0)
{
  std::swap(p, array.p);
  std::swap(n, array.n);
}

array::array(const array &other) :
  n(0),
  p(nullptr)
{
  if (other.n > 0)
  {
    n = other.n;
    p = new double[n];
    for (int i = 0; i < other.n; ++i)
    {
      p[i] = other.p[i];
    }
  }
}

array::array(const int size, const double value) :
  n(0),
  p(nullptr)
{
  if (size > 0)
  {
    n = size;
    p = new double[n];
    for (int i = 0; i < size; ++i)
    {
      p[i] = value;
    }
  }
}

array array::operator=(array &copyArray)
{
  n = copyArray.n;
  p = copyArray.p;
  copyArray.n = 0;
  copyArray.p = nullptr;

  return *this;
}

double array::at(const int index) const
{
  if (index >= 0 && index < n)
  {
    return p[index];
  }
  else
  {
    throw std::out_of_range("Index is out of range.");
  }
}

int array::size()
{
  return n;
}