#include "Array.h"

Array::Array()
{
	len = 0;
	cap = 1000;

	ptr = new int[1000];
}

Array::Array(int size)
{
	len = 0;
	cap = size;

	ptr = new int[cap];
}

Array::Array(const Array& arr2)
{
	len = arr2.len;
	cap = arr2.cap;

	ptr = new int[cap];

	for (int i = 0; i < len; i++)
	{
		ptr[i] = arr2.ptr[i];
	}

}

Array::~Array()
{
	if (ptr != NULL)
		delete[] ptr;
}


Array& Array::operator=(const Array& arr2)
{
	if (ptr != NULL)
		delete[] ptr;
	ptr = NULL;

	len = arr2.len;
	cap = arr2.cap;

	ptr = new int[cap];

	for (int i = 0; i < len; i++)
	{
		ptr[i] = arr2.ptr[i];
	}

	return *this; 
}

int Array::operator[] (int index) const
{
	// check boundary of index
	// ...

	return ptr[index];
}


int& Array::operator[] (int index)
{
	// check boundary of index
	// ...

	return ptr[index];
}

void Array::resize(int new_size)
{
	if (cap >= new_size)
		return;

	int* ptr2 = new int[new_size];

	for (int i = 0; i < len; i++)
	{
		ptr2[i] = ptr[i];
	}
	

	delete[] ptr;
	ptr = ptr2;
	

	// return;
}


void Array::swap(Array& arr2)	
{
	int* tmp_ptr = ptr;
	ptr = arr2.ptr;
	arr2.ptr = tmp_ptr;

	int tmp = cap;
	cap = arr2.cap;
	arr2.cap = tmp;

	tmp = len;
	len = arr2.len;
	arr2.len = tmp;


}

int main()
{
	Array arr(100);
	//arr[0] = 1;
	Array arr2(arr);
	
}