listing.cpp

数据结构 ssd5 ex2

#include"Listing.h"

//Adds the Advertisement pointer given by the parameter to the vector objects
void Listing::add(Advertisement* ptr)
{
	this->objects.push_back(ptr);
}
//This returns an iterator to the first Advertisement* in vector objects
Listing::iterator Listing::begin()
{
	return this->objects.begin();
}
//This returns an iterator to the last Advertisement* in vector objects
Listing::iterator Listing::end()
{
	return this->objects.end();
}
//This returns the Advertisement pointer whose number equals the parameter number
Advertisement* Listing::operator[](const int& number) 
{
	for(int i = 0; i <= objects.size(); i++)
	{
		if(number == objects[i]->getNumber())
		{
			return objects[i];
		}
	}
	return NULL;
}