题解 | #整型数组合并#

使用while嵌套cin读取，保证后续输出成功

利用set进行排序+去重

#include <algorithm>
#include <functional>
#include <iostream>
#include <set>
using namespace std;

int main() {
    int len1, len2 = 0;
    set<int> new_vec;
    while (cin >> len1) {
        // cin >> len1;
        // vector<int> vec1;
        for (int i = 0; i < len1; i ++) {
            int num = 0;
            cin >> num;
            // vec1.push_back(num);
            new_vec.insert(num);
        }
        cin >> len2;
        // vector<int> vec2;
        for (int i = 0; i < len2; i ++) {
            int num = 0;
            cin >> num;
            // vec2.push_back(num);
            new_vec.insert(num);
        }
        
        for(auto it = new_vec.begin(); it != new_vec.end(); it++)
            cout << *it;
        cout<<endl;
    }


}
// // 64 位输出请用 printf("%lld")