题解 | HJ105#记负均正II#

import java.util.*;

// 注意类名必须为 Main, 不要有任何 package xxx 信息
public class Main {
    public static void main(String[] args)

    {
        Scanner scanner = new Scanner(System.in);
        int numOp = 0;
        int numNeg = 0;
        int sumOp = 0;
        while (scanner.hasNextInt()) {
            int nextInt = scanner.nextInt();
            if (nextInt < 0) {
                numNeg++;
            } else {
                numOp++;
                sumOp += nextInt;
            }
        }
//加入限制条件的判断 若正数为0 则输出0.0.
        if (numOp == 0) {
            System.out.println(0.0);
        } else {
            //输出一位小数
            float res = (float) sumOp / numOp;
            String format = String.format("%.1f", res);
            System.out.println(numNeg);
            System.out.println(format);
        }

    }

}