Question

Write a single statement that assigns avg_sales with the average of num_sales1, num_sales2, and num_sales3.

Sample output with inputs: 3 4 8
Average sales: 5.00

Answer 1

Answer:

import java.io.*;

import java.util.*;  

public class Main {

   public static void main(String[] args) throws IOException {

       BufferedReader in = new BufferedReader(new InputStreamReader(System.in));

       String numSales;

       ArrayList<Integer> average = new ArrayList<>();  

       while ((numSales = in.readLine()) != null) {

           int number = Integer.parseInt(numSales);

           average.add(number);

       }

       OptionalDouble avg = average.stream().mapToDouble(a -> a).average();

       System.out.println(avg);

   }

}

Explanation:

Just convert the input to an array, and then find the average after looping for all of the values in the input.

From the sample input of:

3

4

8

My output gives:

5.0