8. Sum of Series

Sum of Series Programs

//S = 1 + 2 + 3 + 4 + 5 + . . . + n 

import java.util.*;

class SumOfSeries

{

    public static void main()

    {

Scanner sc=new Scanner(System.in);

        int a=1, n ,s = 0;

System.out.print("Enter the Last Limit ; ");

n=sc.nextInt();

        while(a<=n)

        {

            s = s + a;

            a = a + 1;

        }

System.out.println("The Sum of Series is "+s);

    }

}

//S = 1/12 + 1/22 + 1/32 + 1/42 + 1/52 + . . . +1/ n2 

import java.util.*;

class SumOfSeries1

{

    public static void main()

    {

Scanner sc=new Scanner(System.in);

        int a=1, n;

float s=0.0f;

System.out.print("Enter the Last Limit ; ");

n=sc.nextInt();

        while(a<=n)

        {

            s = s + (1/(a*a));

            a = a + 1;

        }

System.out.println("The Sum of Series is "+s);

    }

}