Answered: Statistics are often calculated with…

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Question

Statistics are often calculated with varying amounts of input data. 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:

15 20 0 5 -1

the output is:

10 20

You can assume that at least one non-negative integer is input.

This is the code I am using:

import java.util.Scanner;

public class LabProgram {
public static void main(String[] args) {
Scanner input = new Scanner(System.in);
int[] a= new int[100];
int i=0, sum=0;
double avg, max=0;

while(true){
a[i]=input.nextInt();
if(a[i]<0)
break;
else
sum=sum+a[i]; // sum the numbers
i++;
}
avg=(double)sum/i; //compute average
for(int j=0; j<i;j++)
if(max<a[j])
max=a[j];
System.out.printf("%.2f %.2f\n", avg,max); // print result
}
}

These are the outputs I am getting and I cannot figure out how to remove the decimal.

Input

15 20 0 5 -1

Your output

10.00 20.00

Expected output

10 20

Input

2 2 2 2 12 0 8 4 -5

Your output

4.00 12.00

Expected output

4 12

Input

5 -1

Your output

5.00 5.00

Expected output

5 5

Input

0 -1

Your output

0.00 0.00

Expected output

0 0

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