Write a Java program that prompts the user to enter five test grades between 0 a

Question

Write a Java program that prompts the user to enter five test grades between 0 and 100. Store the values in an array of integers. If the number entered is outside the range, prompt again for a number. Write three methods that do the following:

1.Accept the array as a parameter and return the highest grade in the array.

2.Accept the array as a parameter and return the lowest grade in the array.

3.Accept the array as a parameter and return the average grade in the array. What type of value should be returned?

Print a report of the grades entered, the highest grade, the lowest grade, and the average of the grades.

Sample session (user input in bold):

Enter grade 1 of 5 (0-100): 95

Enter grade 2 of 5 (0-100): 86

Enter grade 3 of 5 (0-100): 109

Enter grade 3 of 5 (0-100): 100

Enter grade 4 of 5 (0-100): 82

Enter grade 5 of 5 (0-100): 90

Grades entered:

95 86 100 82 90

Highest grade: 100

Lowest grade: 82

Average grade: 90.6

Explanation / Answer

import java.util.Arrays;

import java.util.Scanner;

public class GradeCalculation {

   private static int TOTAL_SIZE = 5;

   public static void main(String[] args) {
       int[] marks = getMarks();
       Arrays.sort(marks);
       int highGrade = getHighestGrade(marks);
       int lowestGrade = getLowestGrade(marks);
       double avgGrade = getAverageGrade(marks);
      
       System.out.println("Highest grade: "+highGrade);
       System.out.println("Lowest grade: "+lowestGrade);
       System.out.println("Average grade: "+avgGrade);
   }

   private static int[] getMarks() {
       int[] marks = new int[TOTAL_SIZE];
       Scanner scanner = new Scanner(System.in);
       for (int i = 0; i < TOTAL_SIZE; i++) {
           System.out.print("Enter grade " + (i + 1) + " of " + TOTAL_SIZE
                   + " (0-100):");
           marks[i] = scanner.nextInt();
           System.out.print(System.lineSeparator());
       }
       System.out.println("Grades entered:");
       for(int i=0;i<TOTAL_SIZE;i++){
           System.out.print(marks[i]+" ");
       }
       System.out.println();
       return marks;
   }

   private static int getHighestGrade(int[] marks) {
       return marks[TOTAL_SIZE - 1];
   }

   private static int getLowestGrade(int[] marks) {
       return marks[0];
   }

   private static double getAverageGrade(int[] marks) {
       double avgMark;
       int sum = 0;
       for (int i = 0; i < TOTAL_SIZE; i++) {
           sum += marks[i];
       }
       avgMark = (double)sum / TOTAL_SIZE;
       return avgMark;
   }
}

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