Java Program to Print the Series 10 14 28 32 64 68 136 …N

In the previous article we have discussed about Java Program to Print the Series 7 8 18 57 232 … N

In this article we are going to see how to print the series 10 14 28 32 64 68 136 …N by using Java programming language.

Java Program to Print the Series 10 14 28 32 64 68 136 …N

On observing the pattern carefully, we can see 1^st number starts from 10, then the next number follows a logic

10
10 + 4 = 14
14 * 2 = 28
28 + 4 = 32
32 * 2 = 64 … and so on

Example:

……

+4 *2 +4 *2 +4

Let’s see different ways to print the series 10 14 28 32 64 68 136 …N

By Using For Loop
By Using While Loop
By Using User Defined Method

Method-1: Java Program to Print the Series 10 14 28 32 64 68 136 …N By Using For Loop

Approach:

Create Scanner class object.
Declare an integer variable say ‘n’ which holds the number of terms in the series.
Prompt the user to enter a number as value of n.
Let declare an integer variable say ‘result’ and initialize it to 10
Use a for loop from i=1 to i<=n-1 where the loop is incremented by 1
Inside the for loop we will find the value of result according to the position of i using if-else condition. If i%2 != 0, then result = result + 4, else result = result * 2.
Print the result in the series.

Program:

import java.util.*;
public class Main
{
    public static void main(String [] args)
    {
        //creating object of Scanner class 
        Scanner s = new Scanner(System.in);
        //Taking input of number of elements in the series
        System.out.println("Enter the Nth term “N” ");
        int n = s.nextInt();
        int result = 10;
        System.out.print(result);
        //for loop to print the series
        for (int i = 1; i <= n-1; i++) 
        {
            if(i%2 != 0)
            {
                result +=4; 
                System.out.print(" "+result);
            }
            else
            {
                result *=2; 
                System.out.print(" "+result);
            }
        } 
    }
}

Output:

Enter the Nth term “N” 
5
10 14 28 32 64

Method-2: Java Program to Print the Series 10 14 28 32 64 68 136 …N By Using While Loop

Approach:

Create Scanner class object.
Declare an integer variable say ‘n’ which holds the number of terms in the series.
Prompt the user to enter a number as value of n.
Let declare an integer variable say ‘result’ and initialize it to 10
Declare and initialize an integer variable i=1
Continue a while loop till i<=n-1, where i is incremented by 1.
Inside the while loop we will find the value of result according to the position of i using if-else condition. If i%2 != 0, then result = result + 4, else result = result * 2.
Print the result in the series.

Program:

import java.util.*;
public class Main
{
    public static void main(String [] args)
    {
        //creating object of Scanner class 
        Scanner s = new Scanner(System.in);
        //Taking input of number of elements in the series
        System.out.println("Enter the Nth term “N” ");
        int n = s.nextInt();
        int result=10;
        System.out.print(result);
        int i=1;
        while(i<=n-1)
        {
            if(i%2 != 0)
            {
                result +=4; 
                System.out.print(" "+result);
            }
            else
            {
                result *=2; 
                System.out.print(" "+result);
            }
            i++;
        }      
    }
}

Output:

Enter the Nth term “N” 
7
10 14 28 32 64 68 136

Method-3: Java Program to Print the Series 10 14 28 32 64 68 136 …N By Using User Defined Method

Approach:

Create Scanner class object.
Declare an integer variable say ‘n’ which holds the number of terms in the series.
Prompt the user to enter a number as value of n.
Call a user defined method printSeries() by passing n as parameter.
Inside method declare an integer variable say ‘result’ and initialize it to 10
Use a for loop from i=1 to i<=n-1 where the loop is incremented by 1
Inside the for loop we will find the value of result according to the position of i using if-else condition. If i%2 != 0, then result = result + 4, else result = result * 2.
Print the result in the series.

Program:

import java.util.*;
public class Main
{
    public static void main(String[] args)
    {
        // creating object of scanner class 
        Scanner s = new Scanner(System.in);
        //Taking input of number of elements in the series
        System.out.println("Enter the value of Nth term 'N' ");
        int n = s.nextInt();
        // calling printSeries method to print the series
        printSeries(n);
    }
    
    //printSeries metthod to print the series
    public static void printSeries(int n)
    {
        int result = 10;
        System.out.print(result);
        //for loop to print the series
        for (int i = 1; i <=n-1; i++) 
        {
            if(i%2 != 0)
            {
                result +=4; 
                System.out.print(" "+result);
            }
            else
            {
                result *=2; 
                System.out.print(" "+result);
            }
        } 
    }
}

Output:

Enter the value of Nth term 'N' 
9
10 14 28 32 64 68 136 140 280

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