Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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Question
Complete the attached
Do not change anything in the main method. Just define two methods, the input method and the average method, as described in the comments in the attached file.
Sample run:
Enter a grade, negative to quit: 97
Enter a grade, negative to quit: 95
Enter a grade, negative to quit: 96
Enter a grade, negative to quit: 57
Enter a grade, negative to quit: 91
Enter a grade, negative to quit: -1
97.0, 95.0, 96.0, 57.0, 91.0
Your average is 87.2
![10:15
l LTE
Done
Lab25
import java.util.*;
/*
This program inputs grades until the
user enters a negative number, then
calculates
and outputs the average of the grades.
Name:
Date:
*/
public class Lab25 {
public static final Scanner console = new
Scanner(System.in);
/* The input method takes an array of
doubles as the parameter and
returns the number of actual grades
that were input.
*/
/* The average method takes an array of
doubles representing the grades
and an int representing the number of
grades as parameters and returns the
average of the grades as a double.
*/
public static void main(String[] args) {
double[] grade = new double[100];
int gradeCount = input(grade);
//Print all grades but the last one
with a comma after.
for (int i=0; i<gradeCount-1; i++) {
System.out.print(grade[i] + ", ");
}
//Print the last one without a comma
and go to the next line.
II
System.out.println(grade[gradeCount-1]);
//Print the average using the average
method, rounded to the nearest tenth.
System.out.printf("Your average is
%.1f%n", average(grade, gradeCount));
}
}](https://content.bartleby.com/qna-images/question/3442a2f8-c6d4-41dc-a9a1-a307b39d11e7/de459aba-2048-43e4-acab-7973e237b861/ny6udtl_processed.png)
Transcribed Image Text:10:15
l LTE
Done
Lab25
import java.util.*;
/*
This program inputs grades until the
user enters a negative number, then
calculates
and outputs the average of the grades.
Name:
Date:
*/
public class Lab25 {
public static final Scanner console = new
Scanner(System.in);
/* The input method takes an array of
doubles as the parameter and
returns the number of actual grades
that were input.
*/
/* The average method takes an array of
doubles representing the grades
and an int representing the number of
grades as parameters and returns the
average of the grades as a double.
*/
public static void main(String[] args) {
double[] grade = new double[100];
int gradeCount = input(grade);
//Print all grades but the last one
with a comma after.
for (int i=0; i<gradeCount-1; i++) {
System.out.print(grade[i] + ", ");
}
//Print the last one without a comma
and go to the next line.
II
System.out.println(grade[gradeCount-1]);
//Print the average using the average
method, rounded to the nearest tenth.
System.out.printf("Your average is
%.1f%n", average(grade, gradeCount));
}
}
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