SortList

void UporList::Sort()
{
    this->Reset();
    int min;
    node* k = top;
    while (pred->next != 0)
    {
        min = pred->data;
        marker = pred->next;
        while (marker != 0)
        {
            if (marker->data < min)
            {
                k = marker;
                min = marker->data;
            }
            marker = marker->next;
        }
        std::swap(pred->data, k->data);
        pred = pred->next;
    }
    this->Reset();
}