ICSE JAVA PROGRAMS 2019: SECTION B QUESTION 7 SOLVED

ICSE JAVA PROGRAMS 2019: SECTION B QUESTION 7

Programming for school students ( upper to middle/secondary school)

Design a class to overload a function series() as follows:

(a) void series (int x, int n) - To display the sum of the series given below:

x+x²+x³+........+xⁿ

(b) void series (int p) - To display the following series:

0, 7, 26, 63, ........ upto p terms

(c) void series () - To display the sum of the series given below

&frac12 + 1⁄3 +&frac14 +.......+1⁄10

import java.util.Scanner;

public class ISCJava{

       public static void main(String[] args) {

       Scanner in = new Scanner(System.in);

       Series obj = new Series();

       int choice;

       System.out.println("Enter your choice(1/2/3):");

       choice = in.nextInt();

       switch(choice){

              case 1:

              int x, n;

              System.out.println("Enter the value of x:");

              x = in.nextInt();

              System.out.println("Enter the value of n:");

              n = in.nextInt();

              obj.series(x,n);

              break;

              case 2:

              int p;

              System.out.println("Enter the value of p:");

              p = in.nextInt();

              obj.series(p);

              break;

              case 3:

              obj.series();

              break;

              default:

              System.out.println("Wrong Choice:");

       }

       in.close();

       }

}

class Series {

       public void series(int x, int n) {

              for (int i = 1; i<= n ;i++)

                     sumOfSeries += Math.pow((double)x,(double)i);

              System.out.println("Sum of the series is:"+sumOfSeries);

       }

       public void series(int p) {

              System.out.println("The series is");

              for(int i = 1; i<= p; i++)

                     if (i != p)

                            System.out.print((int)Math.pow(i, 3)-1+",");

                     else

                            System.out.println((int)Math.pow(i, 3)-1);       

       }

       public void series() {

              for (int i = 2; i<= 10 ;i++)

                     sumOfSeries += (1.0/i);

              System.out.println("Sum of the series is:"+sumOfSeries);

       }

       Series() {

              this.sumOfSeries = 0.0;

       }

       private double sumOfSeries;

}

       

PYTHON CODE

Note: Function overloading is not available in Python.

class Series:

    def seriesOne(self,x,n):

        for i in range(n):

            i +=1

            self.__sumOfSeries += x**i

        print("Sum of the series is:",self.__sumOfSeries)

    def seriesTwo(self,p):

        for i in range(p):

            i +=1

            if i<p:

                print(i**3-1, end =",")

            else:

                print(i**3-1, end =" ")

    def seriesThree(self):

        for i in range(9):

            i +=2

            self.__sumOfSeries += (1.0/(i+1))

        print("Sum of the series is:",self.__sumOfSeries)

    def __init__(self):

       self.__sumOfSeries = 0

    __sumOfSeries = float(0)

# main program    

obj = Series()

try:

    N = int(input("Enter your choice(1/2/3):"))

    if N > 3:

        print("Your choice in invalid")   

    elif N==1:

        x = int(input("Enter the value of x:"))

        n = int(input("Enter the value of n:"))

        obj.seriesOne(x,n)

    elif N==2:

        p = int(input("Enter the value of p:"))

        obj.seriesTwo(p) 

    else:

        obj.seriesThree()    

except ValueError as e:

    print("Your choice is invalid")