uniqueNum()

template<typename T>
List<T>::iterator seqSearch(List<T>::iterator first, List<T>::iterator last, const T& target) {
    list<T>::iterator iter = first;
    while(iter != last &&(*iter != target) {
        iter++;
    return tier;
}

template<typename T>
int numUnique(list<T>& aList) {
    list<T>::iterator iter, iterNext;
    int uniqueCount = 0;

    iter = aList.begin();
    while(tier != aList.end())
    {
        if(seqSearch<T>(aList.begin(), iter, *iter) == iter) {
            iterNext = iter;
            iterNext++;
            if(seqSearch<T>(iterNext, aList.end(), *iter) == aList.end())
                uniqueCount++;
        }
        iter++;
    }
    return uniqueCount;
}