题解 | #统计成绩#

import  java.util.Scanner;
public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        double[] score = new double[n];
        for(int i=0; i<n ; i++) {
            score[i] = sc.nextDouble();
        }
        double High = Main.Highest(score);
        double Low = Main.Lowest(score);
        double Average = Main.Average(score);
        System.out.println(String.format("%.2f",High) + " " + String.format("%.2f",Low) + " " + String.format("%.2f",Average));
    }
    public static double Highest(double []d){
        double count=0;
        for (double v : d) {
            if (v >= count) {
                count = v;
            }
        }
        return count;
    }
    public static double Lowest(double []d){
        double count=d[0];
        for (double v : d) {
            if (v <= count) {
                count = v;
            }
        }
        return count;
    }
    public static double Average(double []d){
        double count=0;
        for (double v : d) {
            count+=v;
        }
        return count/d.length;
    }
}