#include <iostream>
using namespace std;

#include "int_array.h"

// Member function definitions for the integer array class.  These
// should each be quite clear from their definitions.

int_array::int_array()
  : elements_(0), n_(0)
{}

int_array::int_array( int n )
  : elements_(new int[n]), n_(n)
{}

int_array::int_array( int n, const int& init )
  : elements_(new int[n]), n_(n)
{
  for ( int i=0; i<n; ++i )
    this->elements_[i] = init;
}

int_array::int_array( const int_array& rhs) 
{
  copy( rhs );
}

int_array::~int_array()
{
  delete [] elements_;
}


const int_array& 
int_array::operator= ( const int_array& rhs )
{
  if ( this != &rhs ) {
    delete [] elements_;
    copy( rhs );
  }
  return *this;
}

void
int_array::resize( int n )
{
  delete [] this->elements_;
  this->n_ = n;
  this->elements_ = new int[n];
}


void 
int_array::copy( const int_array & rhs )
{
  this->n_ = rhs.n_;
  this->elements_ = new int[ this->n_ ];
  for ( int i=0; i<this->n_; ++i )
    this->elements_[i] = rhs.elements_[i];
}


bool
operator==( const int_array& lhs, const int_array& rhs )
{
  if ( lhs.size() != rhs.size() )
    return false;

  for ( int i=0; i<lhs.size(); ++i )
    if ( lhs[i] != rhs[i] )
      return false;

  return true;
}


ostream& 
operator<<( ostream& ostr, const int_array& rhs )
{
  for ( int i=0; i<rhs.size(); ++i ) {
    ostr << rhs.elements_[i] << " ";
    if ( (i+1)%10==0 ) ostr << "\n";
  }
  if ( rhs.size()%10 != 0 ) ostr << "\n";
  return ostr;
}