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g 4.16 Write a program that takes any number of non-negative integers as input, and outputs the average and max. A negative integer ends the input and is not included in the statistics. Ex: When the input is:

Respuesta :

ijeggs

Answer:

import java.util.ArrayList;

import java.util.Scanner;

import java.util.Collections;

public class num4 {

   public static void main(String[] args) {

       int sum = 0;

       Scanner in = new Scanner(System.in);

       System.out.println("Enter number");

       int num = in.nextInt();

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

       while (num >= 0){

       list.add(num);

       System.out.println("Enter another positive number, enter a negative to stop");

       num = in.nextInt();

       }

       int maximum = Collections.max(list);

       int listSize = list.size();

       for(int i:list){

           sum = sum+i;

       }

       double average = (double) sum/listSize;

       System.out.println("Maximum number entered is "+maximum);

       System.out.println("Average of the number is "+average);

   }

}

Explanation:

In this program:

  • A Scanner class is used to receive user input and store in a variable
  • A while loop with the condition while (num >= 0) is used to ensure only non-negative numbers are entered
  • An ArrayList is created and used to store all the user's valid entries
  • The Max Method in the Collections class is used to find the maximum value entered
  • To find the average, a for loop is used to add all elements in the list and divide by the size of the list
  • Finally the Average and maximum is printed out

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