int CardList::operator==(CardList& list){
if(this->length() != list.length()){
return 0;
}
for(int i=0;i<this->length();i++){
if((*this)[i] != list[i]){
return 0;
}
}
return 1;
}
void CardList::concat(CardList& list)
{
for(int i=0;i<list.length();i++){
this->add(list[i]);
}
}