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Solve any Sum of series programs in Java

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1. Write a java program to print following sum of series:

Arithmetic series11

Code: 

import java.util.Scanner;
public class ArithmeticSeries {
  public static void main(String[] args) {
    int sum=0; 
    Scanner sc = new Scanner(System.in);
    System.out.print("Enter Number :" );
    int n= sc.nextInt();
    for(int i=1, a=1; i<=n; i++, a+=2){
      sum= sum + a ;
    }
    System.out.print("Sum : "+sum);
  }
}

2. Write a java program to print following sum of series:

Arithmetic series12

Code: 

import java.util.Scanner;
public class ArithmeticSeries {
  public static void main(String[] args) {
    int sum=0; 
    Scanner sc = new Scanner(System.in);
    System.out.print("Enter Number :" );
    int n= sc.nextInt();
    for(int i=1, a=9; i<=n; i++, a+=4){
      sum= sum + a ;
    }
    System.out.print("Sum : "+sum);
  }
}

3. Write a java program to print following sum of series:

Arithmetic series

Code:  5

import java.util.Scanner;
public class ArithmeticSeries {
public static void main(String[] args) {
    int sum=0; 
    Scanner sc = new Scanner(System.in);
    System.out.print("Enter Number :" );
    int n= sc.nextInt(); 
    for(int i=1, a=10; i<=n; i++, a--){
      sum= sum + a ;
    }
    System.out.print("Sum : "+sum);
}
}

4. Write a java program to print following sum of series:

Geometric series

Code: 

import java.util.Scanner;
public class GeometricSeries {
  public static void main(String[] args) {
    int sum=0; 
    Scanner sc = new Scanner(System.in);
    System.out.print("Enter Number :" );
    int n= sc.nextInt();
    for(int i=1, k=2; i<=n; i++, k*=3){
      sum= sum + k ;
    }
    System.out.print("Sum : "+sum);
  }
}

5. Write a java program to print following sum of series:

Geometric series

Code: 

import java.util.Scanner;
public class GeometricSeries {
  public static void main(String[] args) {
    int sum=0; 
    Scanner sc = new Scanner(System.in);
    System.out.print("Enter Number :" );
    int n= sc.nextInt();
    for(int i=1, k=2; i<=n; i++, k*=2){
      sum= sum + k ;
    }
    System.out.print("Sum : "+sum);
  }
}

6. Write a java program to print following sum of series:

Geometric series

Code: 

import java.util.Scanner;
public class GeometricSeries {
  public static void main(String[] args) {
    int sum=0; 
    Scanner sc = new Scanner(System.in);
    System.out.print("Enter Number :" );
    int n= sc.nextInt();
    for(int i=1, k=10; i<=n; i++, k*=3){
      sum= sum + k ;
    }
    System.out.print("Sum : "+sum);
  }
}

7. Write a java program to print following sum of series:

Geometric series

Code: 

import java.util.Scanner;
public class GeometricSeries {
  public static void main(String[] args) {
    double sum=0; 
    Scanner sc = new Scanner(System.in);
    System.out.print("Enter Number :" );
    int n= sc.nextInt(); 
    int x= sc.nextInt();
    for(int i=1, k=2; i<=n; i++, k*=2){
      sum= sum + (double)x/k ;
    }
    System.out.print("Sum : "+sum);
  }
}

8. Write a java program to print following sum of series:

Geometric series

Code: 

import java.util.Scanner;
public class GeometricSeries {
  public static void main(String[] args) {
    int sum=0; 
    Scanner sc = new Scanner(System.in);
    System.out.print("Enter Number :" );
    int n= sc.nextInt();
    for(int i=1, k=2; i<=n; i++, k*=3){
       if (i%2==0) 
          sum= sum - k;
       else
          sum= sum + k ; 
    }
    System.out.print("Sum : "+sum);
  }
}

9. Write a java program to print following sum of series:

Geometric series

Code: 

import java.util.Scanner;
public class SumOfSeries {
  public static void main(String[] args) {
    int sum=0; 
    Scanner sc = new Scanner(System.in);
    System.out.print("Enter Number :" );
    int n= sc.nextInt();
    for(int i=1, k=5; i<=n; i++, k*=5){
      sum= sum + k ;
    }
    System.out.print("Sum : "+sum);
  }
}

10. Write a java program to print following sum of series:

Arithmetic series

Code: 

import java.util.Scanner;
public class ArithmeticSeries {
  public static void main(String[] args) {
    double sum=0; 
    Scanner sc = new Scanner(System.in);
    System.out.print("Enter Number :" );
    int n= sc.nextInt(); 
    int x= sc.nextInt();
    for(int i=1, a=1; i<=n; i++, a+=2){
      sum= sum + Math.pow(a,3)/x ; // OR sum = sum +(double) a*a*a/x;
    }
    System.out.print("Sum : "+sum);
  }
}

11. Write a java program to print following sum of series:

Arithmetic series

Code: 

import java.util.Scanner;
public class ArithmeticSeries {
  public static void main(String[] args) {
    double sum=0; 
    Scanner sc = new Scanner(System.in);
    System.out.print("Enter Number :" );
    int n= 10; 
    int x= sc.nextInt();
    for(int i=1, a=2; i<=n; i++, a+=2){
      sum= sum + Math.pow(a,x) ;
    }  
    System.out.print("Sum : "+sum);
  }
}

12. Write a java program to print following sum of series:

Arithmetic series

Code:  4

import java.util.Scanner;
public class ArithmeticSeries {
  public static void main(String[] args) {
    int sum=0; 
    Scanner sc = new Scanner(System.in);
    System.out.print("Enter Number :" );
    int n= sc.nextInt();
    for(int i=1, a=1; i<=n; i++, a+=2){
      sum= sum + a ;
    }
    System.out.print("Sum : "+sum);
 }
}

13. Write a java program to print following sum of series:

Geometric series

Code: 

import java.util.Scanner;
public class GeometricSeries {
  public static void main(String[] args) {
    double sum=0; 
    Scanner sc = new Scanner(System.in);
    System.out.print("Enter Number :" );
    int n= sc.nextInt(); 
    int x= sc.nextInt(); 
    for(int i=1, a=2, k=10; i<=n; i++, a+=2, k*=3){
      sum= sum + (double)(x+a)/k ;
    }
    System.out.print("Sum : "+sum);
  }
}

14. Write a java program to print following sum of series:

Picture9

Code:  

import java.util.Scanner;
public class ArithmeticSeries {
  public static void main(String[] args) {
    int sum=0; 
    Scanner sc = new Scanner(System.in);
    System.out.print("Enter Number :" );
    int n= sc.nextInt();
    for(int i=1, a=1; i<=n; i++, a+=2){
      sum= sum + a ;
    }
    System.out.print("Sum : "+sum);
  }
}

15. Write a java program to print following sum of series:

     a1/1 + a2/4 + a3/9 + a4/24 + … + an/n!

Code:    

import java.util.Scanner;
public class Series2
{
    public static void main (String[] args)
    {
        double n, a, res = 0, prev = 1;
        Scanner sc = new Scanner(System.in);
        System.out.print("Enter the value of n: ");
        n = sc.nextInt();
        System.out.print("Value of a: ");
        a = sc.nextInt();
       
        for (int i = 1; i <= n; i++)
        {
            // multiply (a/i) to previous term
            prev *= (a / i);
                     
            // store result in res
            res = res + prev;
        }
       
        System.out.println(res);
    }
}

16. Write a java program to print following sum of series:

    1/1 + 2/4 + 3/6 + 4/24 +…+ n

Code:    

import java.util.Scanner;
public class Series1
{
   
    public static void main(String[] args)
    { 
        double res = 0, fact = 1;
        Scanner sc = new Scanner(System.in);
        System.out.print("Input a number : ");
        int n = sc.nextInt();
        for (int i = 1; i <= n; i++) {
            //fact variable store factorial of the i.
            fact = fact * i;
 
            res = res + (i / fact);
        }
        System.out.println("Sum: " + res);
    }
}

17. Write a java program to print following sum of series:

     1 + 1/2 + 1/3 + 1/4 + 1/5  

Code:    

import java.util.Scanner;
public class HarmonicSeries
{
    public static void main(String args[])
    {
        int num ;
        Scanner sc = new Scanner( System.in );
        System.out.print("Input a number: ");
        num = sc.nextInt();
        double result = 0.0;
        while(num > 0){
            result = result + (double) 1 / num;
            num--;
        }
        System.out.println("Output of Harmonic Series is "+result);
    }
}
18. Write a program to sum of Harmonic Series :
     1 + 1/2 + 1/3 + 1/4 + 1/5

Code:    

import java.util.Scanner;
public class HarmonicSeries
{
    public static void main(String args[])
    {
        int num ;
        Scanner sc = new Scanner( System.in );
        System.out.print("Input a number: ");
        num = sc.nextInt();
        double result = 0.0;
        while(num > 0){
            result = result + (double) 1 / num;
            num--;
        }
        System.out.println("Output of Harmonic Series is "+result);
    }
}
19. Write a program to find the sum of a Series:

     1 + 4 + 9 + 16 + 25 + … + n

Code:    

 import java.util.Scanner;
public class Series3
{
    public static void main(String[] args)
    {
        int i,sum = 0;
        Scanner sc = new Scanner(System.in);
        System.out.print("Enter the value of n: ");
        int n = sc.nextInt();
        for (i = 1; i <= n; i++)
            sum += (i * i);
        System.out.println(sum);
    }
}9
20. Write a program to print Fibonacci series of n numbers.  

Code:    

import java.util.Scanner;
public class FibonacciSeries
{
    public static void main(String args[])
    {
        int a = 0,b = 1,c,i;
        System.out.println("Enter the number:"); 
        Scanner sc = new Scanner(System.in); 
        int n = sc.nextInt();
        for(i = 1;i<= n;i++)
        {
            System.out.print (a+" ");
            c = a+b;
            a = b;
            b = c;
        }
    }
}

21. Write a java program to print following sum of series:

Geometric series24

Code:

import java.util.Scanner;
public class GeometricSeries {
public static void main(String[] args) {
    double sum=0; 
    Scanner sc = new Scanner(System.in);
    System.out.print("Enter Number :" );
    int n= sc.nextInt(); 
    int x= sc.nextInt();
    for(int i=1, k=5, a1=1, a2=2; i<=n; i++, k*=5, a1++, a2++){
       sum= sum + (x*Math.pow(k,2))/(a1+a2) ; 
    }
    System.out.print("Sum : "+sum);
  }
}

a2 is actually nothing but (a1 + 1) also If you actually take a closer look, both I and a1 are actually doing the same thing, they are initialized by 1 and increment by 1 for each iteration. So actually you do not need a1 too! You can easily substitute I for a1 and your program would look something like this.

import java.util.Scanner;
public class GeometricSeries {
public static void main(String[] args) {
    double sum=0; 
    Scanner sc = new Scanner(System.in);
    System.out.print("Enter Number :" );
    int n= sc.nextInt(); 
    int x= sc.nextInt();
    for(int i=1, k=5; i<=n; i++, k*=5){
      sum= sum + (x*Math.pow(k,2))/(i+i+1) ; 
    }
    System.out.print("Sum : "+sum);
  }
}
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