Question

I need to change the following code so that it results in the sample output below but also imports and utilizes the code from the GradeCalculator, MaxMin, and Student classes in the com.csc123 package. If you need to change anything in the any of the classes that's fine but there needs to be all 4 classes. I've included the sample input and what I've done so far:

How many students are in your class - 3 Enter the first name of student #1 - Mike Enter Mike's last name - Graz How many grades will you be entering for Mike Graz? - 5 Paz enter the grades for Mike Graz 100 97 92 Grade Statistics for Mike Graz (average=92.6. max/min-100/87) Enter the first name of student #2 - Jack Enter Jack's last name - Schwartz How many grades will you be entering for Jack Schwartz? - 3 Rdz enter the grades for Jack Schwartz 100 90 Grade Statistics for Jack Schwartz (average-63. 3 max/min-100/0) Enter the first name of student #3 - Joan Enter Joan's last name - Jameson How many grades will you be entering for Joan Jameson? - 4 Riz enter the grades for Joan Jameson 98 95 Grade Statistics for Joan Jameson (average-25. max/min 98/93) Ensemble Statistics - Average 86. Max/Min-100/0) Do you wish to continue (Y/N) - n

package lab03;

import java.util.ArrayList;
import java.util.Scanner;
import com.csc241.*;

public class Lab03 {
public String toString() {
return this.fName+" "+this.lName+" (average-"+this.avg()+" ; max/min-"+this.max()+"/"+this.min()+")";
}
public static void main(String args[]) {
do {
double max=0,min=100,total=0;
Scanner sc = new Scanner(System.in);
System.out.print("How many students are in your class - ");
int n = sc.nextInt();
sc.nextLine();
ArrayList s = new ArrayList();
for(int i=0;i System.out.print("\nEnter the first name of the student #"+(i+1)+" - ");
String fName = sc.nextLine();
System.out.print("\nEnter "+fName+"\'s last name - ");
String lName = sc.nextLine();
System.out.print("\nHow many grades will you be entering for "+fName+" "+lName+"? - ");
int m = sc.nextInt();
double grades[] = new double[m];
System.out.println("\nPlz enter the grades for "+fName+" "+lName);
for(int j=0;j grades[j]= sc.nextDouble();
}
Student std = new Student(fName,lName,grades);
s.add(std);
System.out.println("Grade Statistics for "+std);
total += std.avg();
if(std.max()>max)
max = std.max();
if(std.min() min = std.min();
sc.nextLine();
}
double average = total/n;
System.out.println("\nEnsemble statistics - Average-"+average+" ; max/min-"+max+"/"+min);
System.out.print("\nDo you wish to continue(y/n):");
char ch = sc.nextLine().charAt(0);
if(ch=='n'||ch=='N')
break;
}while(true);
}
}

-----------------------------------------------------------------------------------------------------------------------------------------

package com.csc123;
public class GradeCalculator {
public static double avg(final double[] array)
{
double a;
int i;
for(a = array[0], i=1; i < array.length; i++)
{
a += array[i];
}
return a / array.length;
}
public static MaxMin maxMin(final double[] array)
{
double max, min;
int i;
MaxMin mM = new MaxMin();
for(max = min = array[0], i=1; i < array.length; i++)
{
if(array[i] < min)
{
min = array[i];
}
else if(array[i] > max)
{
max = array[i];
}
}
mM.setMax(max);
mM.setMin(min);
return mM;
}
}

------------------------------------------------------------------------------------------

package com.csc123;

public class MaxMin {
private double max;
private double min;
  
public void setMax(final double max)
{
this.max = max;
}
public void setMin(final double min)
{
this.min = min;
}
public double getMax()
{
return max;
}
public double getMin()
{
return min;
}
}

-----------------------------------------------------------------

package com.csc123;

public class Student{
private String fName;
private String lName;
private double grades;

public void setfName(final String fName)
{
this.fName = fName;
}
public void setlName(final String lName)
{
this.lName = lName;
}
public void setgrades(final double grades)
{
this.grades = grades;
}
public String getfName()
{
return fName;
}
public String getlName()
{
return lName;
}
public double getgrades()
{
return grades;
}
}

Answer 1

If you have any doubts, please give me comment...

Student.java

package com.csc123;

public class Student {

    private String fName;

    private String lName;

    private int grades[];

    public Student(String fName, String lName, int grades[]){

        this.fName = fName;

        this.lName = lName;

        this.grades = grades;

    }

    public void setfName(final String fName) {

        this.fName = fName;

    }

    public void setlName(final String lName) {

        this.lName = lName;

    }

    public void setgrades(final int grades[]) {

        this.grades = grades;

    }

    public String getfName() {

        return fName;

    }

    public String getlName() {

        return lName;

    }

    public int[] getgrades() {

        return grades;

    }

    public String toString(){

        return fName+" "+lName;

    }

}

MaxMin.java

package com.csc123;

public class MaxMin {

    private int max;

    private int min;

    public void setMax(final int max) {

        this.max = max;

    }

    public void setMin(final int min) {

        this.min = min;

    }

    public int getMax() {

        return max;

    }

    public int getMin() {

        return min;

    }

}

GradeCalculator.java

package com.csc123;

public class GradeCalculator {

    public static double avg(final int[] array) {

        double a;

        int i;

        for (a = array[0], i = 1; i < array.length; i++) {

            a += array[i];

        }

        return a / array.length;

    }

    public static MaxMin maxMin(final int[] array) {

        int max, min;

        int i;

        MaxMin mM = new MaxMin();

        for (max = min = array[0], i = 1; i < array.length; i++) {

            if (array[i] < min) {

                min = array[i];

            } else if (array[i] > max) {

                max = array[i];

            }

        }

        mM.setMax(max);

        mM.setMin(min);

        return mM;

    }

}

Lab03.java

import java.util.ArrayList;

import java.util.Scanner;

import com.csc241.*;

public class Lab03 {

    // public String toString() {

    //     return fName + " " + lName + " (average-" + avg() + " ; max/min-" + max() + "/" + min()+ ")";

    // }

    public static void main(String args[]) {

        do {

            double max = 0, min = 100, total = 0, avg;

            Scanner sc = new Scanner(System.in);

            System.out.print("How many students are in your class - ");

            int n = sc.nextInt();

            sc.nextLine();

            ArrayList<Student> s = new ArrayList<Student>();

            for (int i = 0; i < n; i++) {

                System.out.print("\nEnter the first name of the student #" + (i + 1) + " - ");

                String fName = sc.nextLine();

                System.out.print("\nEnter " + fName + "\'s last name - ");

                String lName = sc.nextLine();

                System.out.print("\nHow many grades will you be entering for " + fName + " " + lName + "? - ");

                int m = sc.nextInt();

                int grades[] = new int[m];

                System.out.println("\nPlz enter the grades for " + fName + " " + lName);

                for (int j = 0; j < m; j++) {

                    grades[j] = sc.nextInt();

                }

                Student std = new Student(fName, lName, grades);

                s.add(std);

                System.out.print("Grade Statistics for " + std);

                avg = GradeCalculator.avg(grades);

                total += avg;

                MaxMin maxMin = GradeCalculator.maxMin(grades);

                System.out.printf("(average=%.1f ; max/min=%d/%d)\n", avg, maxMin.getMax(), maxMin.getMin());

                sc.nextLine();

            }

            double average = total / n;

            System.out.println("\nEnsemble statistics - Average-" + average + " ; max/min-" + max + "/" + min);

            System.out.print("\nDo you wish to continue(y/n):");

            char ch = sc.nextLine().charAt(0);

            if (ch == 'n' || ch == 'N')

                break;

        } while (true);

    }

}