java - 一系列数字的算术平均值

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Successive integers read from the keyboard. When you read a -1, the program must indicate how many numbers between 1 and 100 we read and what is their arithmetic mean (MediaNum.java).

我推送此代码:

import java.util.*;


public class MediaNum {

    public static void main(String[] args) {

        Scanner entrada = new Scanner(System.in);
        double number, sum=0, medium;
        int counter=0;
        System.out.println("When you want to finish enter '-1'.");
        System.out.println("Enter the numbers:");
        number = entrada.nextDouble();
        while (number != -1){
            sum = sum + number;
            counter++;
            number = entrada.nextDouble();
        }
        if (number == -1){
            counter++;
            System.out.println("counter");
        }
        if (number == -1 && number < 101){
            medium = sum/counter;
            System.out.println("The medium of the numbers entered is: "+medium);
        }
    }   
}

介质的部分和当我输入 -1 时计数器完成的部分是正确的，但错误是当我输入超过 100 的数字时，计数器会计算该数字，并且介质将不正确。

Answer 1

只要数出符合条件的数字即可:

while (number != -1){
    if(number >= 1 && number <= 100) {
        sum += number;
        counter++;
    }
    number = entrada.nextDouble();
}