题解 | #先进后出#

#include <bits/stdc++.h>

using namespace std;

int main()
{
    int t;
    int n;
    cin >> t;

    while(t--)
    {    
        vector<int> a;
        cin >> n;
        int x;
        for(int i = 1; i <= n; i++)
        {
            cin >> x;
            a.push_back(x);
        }
        int len = a.size();
        for(int i = len - 1; i >= 0; i--)
            cout << a[i] << " ";
        printf("\n");
    }
    return 0;
}