Method push_back

lab8/src/6/src/utils/list.cpp:46–54

}

void List::push_back(ListItem *itemPtr)
{
    ListItem *temp = back();
    if (temp == nullptr)
        temp = &head;
    temp->next = itemPtr;
    itemPtr->previous = temp;
    itemPtr->next = nullptr;
}

void List::pop_back()
{