C++题解 | #明明的随机数#

#include <iostream>
#include <algorithm>
#include<vector>
using namespace std;

int main() {
    int lineNum;
    int num;
    cin >> lineNum;
    vector<int> v;
    for (int i = 0; i < lineNum; i++) {
        cin >> num;
        v.push_back(num);
    }
    sort(v.begin(), v.end());
    int last;
    for (vector<int>::iterator it = v.begin(); it != v.end(); it++) {

        if (it == v.begin()) {
            cout << *it << endl;
            last = *it;
        } else {
            if (*it != last) {
                cout << *it << endl;
                last = *it;
            }
        }


    }
}

使用头文件#include <algorithm>的标准算法库的sort，对vector进行快捷的排序，之后再保存上一个输出数字的信息，对数据去重输出即可