void sort(Client *head, int sortType)
{
    Client *current, *minim, *newhead = NULL, *newcur, *tmp;
    while (head)
    {
        current = head;
        minim = head;
        tmp = head;
        //Поиск минимального
        while (current->next)
        {
            switch (sortType)
            {
            case 0: { //Сортируем по номеру счета
                if (stoi(current->next->account) < stoi(minim->account)) {
                    minim = current->next;
                    tmp = current;
                }
                break;
            }
            case 1: { //Сортируем по имени
                if (current->next->full_name < minim->full_name) {
                    minim = current->next;
                    tmp = current;
                }
                break;
            }
            case 2: { //Сортируем по балансу
                if (balance(current->next, year) >= balance(minim, year)) {
                    minim = current->next;
                    tmp = current;
                }
                break;
            }
            default:
                break;
            }
            current = current->next;
        }
        //Удаление из 1-ого списка
        if (minim == head) {
            if (head->next)
                head = head->next;
            else
                head = NULL;
        }
        else if (minim->next)
            tmp->next = minim->next;
        else
            tmp->next = NULL;
        //Добавление во 2-ой список
        if (!newhead)
        {
            newhead = minim;
            newhead->next = NULL;
            newcur = newhead;
        }
        else
        {
            newcur->next = minim;
            newcur = newcur->next;
            newcur->next = NULL;
        }
    }
    head = newhead;
}