Question

please write a java code, one for method and another for the Demo to:

-Compute the average age of all female students.

-Compute the least amount of credits completed among males.

Store the three arrays in the demo file.

Print the results within the demo file.

String []gender ={"F", "F", "M", "F", "F", "M", "M", "M", "M", "F", "M", "F", "M", "F", "F", "M", "M", "F", "M", "F"};

int []age = {18, 19, 19, 21, 20, 18, 24, 19, 21, 21, 21, 23, 20, 20, 19, 18, 19, 21, 20, 22};

int []credits_completed = {45, 12, 54, 23, 26, 33,18, 16, 28, 34, 36, 33, 49, 58, 51, 40, 38, 48, 56, 10}

Answer 1

PROGRAM :

I have run and compiled the program using Eclipse IDE . I am attaching the code along with the input and output screenshot.

PROGRAM CODE

import java.util.Scanner;

public class Demo 
{

        public static void main(String[] args) 
        {
                // TODO Auto-generated method stub

                Scanner sc = new Scanner(System.in);
                String []gender ={"F", "F", "M", "F", "F", "M", "M", "M", "M", "F", "M", "F", "M", "F", "F", "M", "M", "F", "M", "F"};
                int []age = {18, 19, 19, 21, 20, 18, 24, 19, 21, 21, 21, 23, 20, 20, 19, 18, 19, 21, 20, 22};
                int []credits_completed = {45, 12, 54, 23, 26, 33,18, 16, 28, 34, 36, 33, 49, 58, 51, 40, 38, 48, 56, 10};

                //function is being called here.
                averageAge(gender,age,credits_completed);
        }

        private static void averageAge(String[] gender, int[] age, int[] credits_completed) 
        {
                // TODO Auto-generated method stub
                // Here we are calculating the average age of all female students.
                int sum=0 ,count=0;
                for(int i=0;i<gender.length;i++)
                {
                        //checking the condition of geneder is Female or not.
                        if(gender[i].equals("F"))
                        {
                                sum = sum+age[i];
                                count++;
                        }
                }
                float averageAge_female;
                averageAge_female=sum/count;
                System.out.println("THE AVERAGE AGE OF ALL FEMALE STUDENTS IS :"+averageAge_female);
                
                //Here we are calculating the least credits completed by male.
                int flag = 0;
                int least = 0;
                for(int i=0;i<gender.length;i++)
                {
                        if(flag==0 && gender[i].equals("M"))
                        {
                                flag = 1;
                                least = credits_completed[i];
                        }
                        else if(gender[i].equals("M") && least>credits_completed[i])
                        {
                                least = credits_completed[i];
                        }
                }
                System.out.println("THE LEAST AMOUNT OF CREDITS COMPLETED AMONG MALE IS : "+least);
        }

}

PROGRAM INPUT SNAPS

PROGRAM OUTPUT SNAPS

I have made seperately two classes one for printing the value only and other for calculation.

CODES ARE FOLLOWING :

package Demo;

import java.util.Scanner;

import student.Student;

public class DemoMain 
{

        public static void main(String[] args) 
        {
                // TODO Auto-generated method stub
                Scanner sc = new Scanner(System.in);
                String []gender ={"F", "F", "M", "F", "F", "M", "M", "M", "M", "F", "M", "F", "M", "F", "F", "M", "M", "F", "M", "F"};
                int []age = {18, 19, 19, 21, 20, 18, 24, 19, 21, 21, 21, 23, 20, 20, 19, 18, 19, 21, 20, 22};
                int []credits_completed = {45, 12, 54, 23, 26, 33,18, 16, 28, 34, 36, 33, 49, 58, 51, 40, 38, 48, 56, 10};

                DemoMethod d = new DemoMethod();

                //function is being called here for calculating the average of females.
                float avg = d.averageAge(gender,age,credits_completed);
                System.out.println("THE AVERAGE AGE OF ALL FEMALE STUDENTS IS :"+avg);
                
                //functions is being called for finding the least.
                int leastvalue = d.leastValue(gender,age,credits_completed);
                System.out.println("THE LEAST AMOUNT OF CREDITS COMPLETED AMONG MALE IS : "+leastvalue);

        }

}

package Demo;

public class DemoMethod 
{

        // Here we are calculating the average age of all female students.
        public float averageAge(String[] gender, int[] age, int[] credits_completed) 
        {
                // TODO Auto-generated method stub
                int sum=0 ,count=0;
                for(int i=0;i<gender.length;i++)
                {
                        //checking the condition of geneder is Female or not.
                        if(gender[i].equals("F"))
                        {
                                sum = sum+age[i];
                                count++;
                        }
                }
                float averageAge_female;
                averageAge_female=sum/count;
                return averageAge_female;       
        }

        //Here we are calculating the least credits completed by male.
        public int leastValue(String[] gender, int[] age, int[] credits_completed) {
                // TODO Auto-generated method stub
                int flag = 0;
                int least = 0;
                for(int i=0;i<gender.length;i++)
                {
                        if(flag==0 && gender[i].equals("M"))
                        {
                                flag = 1;
                                least = credits_completed[i];
                        }
                        else if(gender[i].equals("M") && least>credits_completed[i])
                        {
                                least = credits_completed[i];
                        }
                }
                return least;
        }
        
}

ATTACHING THE SCREENSHOT

OUTPUT