题解 | 统计成绩

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

int main() {
    int n;
    cin >> n;
    vector<double> scores(n);
    double sum = 0;
    for(int i = 0;i<n;i++)
    {
        cin >> scores[i];
         sum += scores[i];
    }

    for(int i = 0;i<n-1;i++)
    {
       for(int j = 0;j<n-1-i;j++)
       {
        if(scores[j]>scores[j+1])
        {
            double t = scores[j];
            scores[j]=scores[j+1];
            scores[j+1]=t;
        }
       }
    }
   double avg = sum /n; 
   cout << fixed << setprecision(2);
    cout << scores[n-1] << " " << scores[0] << " " << avg << endl;
    return 0;
}