C++ 解法, 执行用时: 2ms, 内存消耗: 308KB, 提交时间: 2022-02-08

#include <iostream>
// write your code here......
#include <vector>
#include <bits/stdc++.h>

using namespace std;

int main() {

    // write your code here......
    vector<int> v;
    int a;
    while(cin >> a){
        v.push_back(a);
    }
    vector<int>::iterator iter = v.begin();
    while(iter != v.end()){
        cout << *iter << " ";
        iter++;
    }
    cout << endl;
    while(iter != v.begin()){
        iter--;
        cout << *iter << " ";
    }
    cout << endl;

    return 0;
}

C++ 解法, 执行用时: 2ms, 内存消耗: 388KB, 提交时间: 2022-01-24

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

int main() {

    // write your code here......
    vector<int> v;
    v.resize(5);
    
    for (int i = 0; i < 5; i++){
        cin >> v[i];
    }
    for (vector<int>::iterator it = v.begin(); it < v.end(); it++){
        cout << *it << ' ';
    }
    cout << endl;
    for (vector<int>::reverse_iterator it = v.rbegin(); it != v.rend(); it++){
        cout << *it <<' ';
    }
    cout << endl;

    return 0;
}

C++ 解法, 执行用时: 2ms, 内存消耗: 388KB, 提交时间: 2021-11-22

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

int main() {

    // write your code here......
    vector<int>v;
    int num=0;
    for(int i=1;i<=5;i++)
    {
        cin >> num;
        v.push_back(num);
    }
    for(vector<int>::iterator it = v.begin();it != v.end();it++)
    {
        cout << *it << " ";
    }
    cout << endl;
    
    for(vector<int>::iterator it = v.end()-1 ;it != v.begin()-1;it--)
    {
        cout << *it << " ";
    }
    cout << endl;
    

    return 0;
}

C++ 解法, 执行用时: 2ms, 内存消耗: 396KB, 提交时间: 2021-10-31

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

int main() {

    // write your code here......
    vector<int> i_vec;
    for(int i=0,val; i<5; ++i){
        cin >> val;
        i_vec.push_back(val);
    }
    
    for(auto f_it=i_vec.begin(); f_it!=i_vec.end(); )
        cout << *f_it++ << ' ';
    cout << endl;
    for(auto b_it=i_vec.rbegin(); b_it!=i_vec.rend(); )
        cout << *b_it++ << ' ';
    cout << endl;

    return 0;
}

C++ 解法, 执行用时: 2ms, 内存消耗: 408KB, 提交时间: 2021-11-14

#include <iostream>
#include<vector>
// write your code here......

using namespace std;

int main() {

    // write your code here......
    vector<int> arr;
    for(int i=1;i<=5;i++){
        int a;
        cin>>a;
        arr.push_back(a);
    }
    vector<int>::iterator it = arr.begin();
    for(it;it!=arr.end();it++)
        cout<<*it<<" ";
    cout<<endl;
    it = arr.end()-1;
    for(int i=1;i<=5;i++){
        cout<<*it<<" ";
        it--;
}

    return 0;
}