题解 | #迭代器遍历容器#

#include <bits/stdc++.h>
using namespace std;

int main() {

    // write your code here......
    vector<int>::iterator it1;
    vector<int>::reverse_iterator it2;
    vector <int> v1(5);
    for (it1 = v1.begin(); it1 != v1.end();) {
        cin >> *it1;
        it1++;
    }

    for (it1 = v1.begin(); it1 != v1.end();) {
        cout << *it1 << " ";
        it1++;
    }
    cout << endl;
    for (it2 = v1.rbegin(); it2 != v1.rend(); it2++) {
        cout << *it2 << " ";

    }
    return 0;
}