代码如下:
import java.util.ArrayList;
import java.util.List;
import java.util.Scanner;
public class App20 {
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
List<Float> scores = new ArrayList<>();
System.out.println("请输入10个人的成绩:");
for (int i = 0; i < 10; i++) {
scores.add(scanner.nextFloat());
}
float max = scores.stream().max((x, y) -> Float.compare(x, y)).get();
System.out.println("最高分:" + max);
float min = scores.stream().min((x, y) -> Float.compare(x, y)).get();
System.out.println("最低分:" + min);
float average = scores.stream().reduce(0.0f, Float::sum) / scores.size();
System.out.println("平均分:" + average);
scores.sort((x, y) -> Float.compare(x, y));
System.out.println("从小到大分数排序:");
scores.forEach(s -> System.out.print(s + " "));
long n = scores.stream().filter(r -> r > average).count();
System.out.println("\n高于平均分的有" + n + "个");
}
}
运行结果:
请输入10个人的成绩:
10 9 8 7 6 5 4 3 2 1
最高分:10.0
最低分:1.0
平均分:5.5
从小到大分数排序:
1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0 10.0
高于平均分的有5个