题解 | #迭代器遍历容器#

#include <iostream>
// write your code here......
#include <vector>
using namespace std;

int main() {

    // write your code here......
    int num;
    vector<int> nums;
    while(cin >> num){
        nums.emplace_back(num);
    }
    for(auto it = nums.begin(); it != nums.end(); ++it) {
        cout << *it << " ";
    }
    cout << endl;
    for(auto it = nums.end() - 1; it != nums.begin() - 1; --it) {
        cout << *it << " ";
    }

    return 0;
}