ArrayList通过丢弃最小值来计算平均值

import java.util.ArrayList;

public class AverageCalculator {
    public static void main(String[] args) {
        ArrayList<Integer> numbers = new ArrayList<>();
        numbers.add(5);
        numbers.add(10);
        numbers.add(15);
        numbers.add(20);

        int sum = 0;
        for (int number : numbers) {
            sum += number;
        }

        double average = (double) sum / numbers.size();
        System.out.println("平均值为：" + average);
    }
}