Exercise 9.26

Using the following definition of ia, copy ia into a vector and into a list. Use the single-iterator form of erase to remove the elements with odd values from your list and the even values from your vector.

int ia[] = {0, 1, 1, 2, 3, 5, 8, 13, 21, 55, 89};

Solution

std::vector<int> v;
std::list<int> l;

for (auto &i : ia) {
    v.push_back(i);
    l.push_back(i);
}

for (auto it = v.begin(); it != v.end();) {
    if (*it % 2 == 0)
        it = v.erase(it);
    else
        ++it;

}
for (auto it = l.begin(); it != l.end();) {
    if (*it % 2 == 1)
        it = l.erase(it);
    else
        ++it;
}