#include <iostream>
#include <cassert>
#include "array.h"



array::array( int size )
{
	assert( size >= 1 );
	numElts = size;
	assert( (elts	= new int [ numElts ]) != NULL );

	//	remember to set the lower and upper to their proper values here

}

/*
array::array( int low, int high )
{

	//	implement this constructor using the constructor above as a guide

}
*/


array::array( const array& a )
{
	numElts	= a.numElts;
	assert( (elts	= new int [ numElts ]) != NULL );
	for ( int i = 0; i < numElts; i++ )
	{
		elts[i] = a.elts[i];
	}
}

array& array::operator =( const array& a )
{
	if ( this != &a )
	{
		this->array::~array();
	}
	this->array::array(a);

	return *this;
}

array::~array()
{
	delete [] elts;
}

int& array::operator[]( int pos )
{

	//	remember pos is a value indexed from lower to upper, but elts is indexed 
	//	from (0...numElts-1) so you need to adjust the array subscript appropriately

	assert( pos >= 0 && pos < numElts );
	return elts[pos];
}

int array::numElements()
{
	return numElts;
}

/*

int array::lowerBound()
{
	// uncomment and implement the function to return the lower bound of the array

}

int array::upperBound()
{
	// uncomment and implement the function to return the upper bound of the array

}

*/

ostream& operator<<( ostream& os, array& a )
{
	for ( int i = 0; i < a.numElts; i++ )
		os << a.elts[i] << " ";
	return os;
}