Question

Write a java program to print the sum of the following series based on

user's choice:

S 1/12 + 1/2^2 + 1/3^2.. 1/n^2

S 1/1 1/2 + 1/3 1/4...l/n​

Answer 1

Answer:

Program:-

import java.util.*;

public class Main

{

public static void main(String args[])

{

Scanner in=new Scanner(System.in);

int ch,n;

double s=0.0;//Initialilsing here so that it can be used both times in the switch

System.out.println("Enter 1 for dispalying the sum of Series 1");

System.out.println("Enter 2 for displaying the sum of Series 2");

System.out.println("Enter your choice");

ch=in.nextInt();

switch(ch)

{

case 1:

System.out.println("Enter the limit:");

n=in.nextInt();

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

{

s=s+1/(double)Math.pow(i,2);

}

System.out.println("The sum of the series:"+s);

break;

case 2:

System.out.println("Enter the limit:");

n=in.nextInt();

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

{

s=s+1/(double)i;

}

System.out.println("The sum of the series:"+s);

break;

default:

System.out.println("Invalid choice");

}

in.close();

}

}

Output is attached

• You may confirm by checking the answer by solving though I have checked