Question

In JAVA

• Write a program that calculates the average of a group of test scores, where the
lowest score in the group is dropped. It should use the following methods:
• int getScore() should ask the user for a test score, store it in a reference
parameter variable, and validate it. This method should be called by main once
for each of the five scores to be entered.
• void calcAverage() should calculate and display the average of the four highest scores.

This method should be called just once by main, and should be passed
the five scores.
• int findLowest() should find and return the lowest of the five scores passed to it.
It should be called by calcAverage, which uses the method to determine one of
the five scores to drop.
The program should display a letter grade for each score and the average test
score.
Input Validation: Do not accept test scores lower than 0 or higher than 100.

*******(use random numbers 50-100. Don't ask the user to enter data)
********Show all test scores, the one that got dropped and the average.

*******For random numbers, use the Random class not Math.random()

Answer 1

Program:

import java.util.Scanner;

public class Main
{
public static double calcAvearge(int[] array)
{
int toDrop = findLowest(array);
int sum = 0;
for(int i=0;i<5;i++)
{
if(array[i]!=toDrop)
{
sum =sum + array[i];
  
}
}
  
return (double)sum/4;
}
  
public static int findLowest(int[] arr)
{
int lowest = arr[0];
for(int i=0;i<5;i++)
{
if(arr[i]<lowest)
{
lowest = arr[i];
}
}
  
return lowest;
}
  
public static int getScore()
{
Scanner s = new Scanner(System.in);
System.out.print("Enter score: ");
int userScore = s.nextInt();
return userScore;
}
  
   public static void main(String[] args) {
   double avg;
   int lowest;
   int[] score = new int[5];
   for(int i=0;i<5;i++)
   {
   while(true)
   {
   int value = getScore();
   if(value>0 && value<100)
   {
   score[i] = value;
   break;
   }
   else
   {
   System.out.println("Invalid score, Enter again.");
   continue;
   }
   }
  
   }
  
   avg = calcAvearge(score);
   System.out.println();
   for(int i=0;i<5;i++)
   {
   System.out.println();
   System.out.print("Score "+ score[i] +" and grade is: ");
   if(score[i]>=90)
   {
   System.out.print("A");
   }
   else if(score[i]>=80 && score[i]<=89)
   {
   System.out.print("B");
   }
   else if(score[i]>=70 && score[i]<=79)
   {
   System.out.print("C");
   }
   else if(score[i]>=60 && score[i]<=69)
   {
   System.out.print("D");
   }
   else
   {
System.out.print("E");  
   }
   }
  
   System.out.println();
   System.out.println("Average score is: "+ avg);
   }
}

Output: