Java Program to Print the Series 6 11 21 36 56 …N

Java Program to Print the Series 6 11 21 36 56 …N

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In the previous article we have discussed about Java Program to Print the Series 1 22 333 4444 55555 … N

In this article we are going to see how to print the series 6 11 21 36 56 …N by using Java programming language.

Java Program to Print the Series 6 11 21 36 56 …N

On observing the pattern carefully, we can see

1st number starts from 6, Then the next number follows a logic

6
6+5 = 11
11+10 = 21
21+15 = 36
36+20 = 56 and so on.

Example:

6 11 21 36 56 81 …… N

                         +5                   +10                 +15                 +20                 +25

Let’s see different ways to print the series 6 11 21 36 56 …N

Method-1: Java Program to Print the Series 6 11 21 36 56 …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 6
  • Let declare another integer variable say ‘add’ and initialize it to 5
  • 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=result+add and add=add+5.
  • 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 = 6;
        int add = 5;
        System.out.print(result);
        //for loop to print the series
        for (int i = 1; i <= n-1; i++) 
        {
            result +=add; 
            System.out.print(" "+result);
            add+=5;
        } 
    }
}

Output:

Enter the Nth term “N” 
5
6 11 21 36 56

Method-2: Java Program to Print the Series 6 11 21 36 56 …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 6
  • Let declare another integer variable say ‘add’ and initialize it to 5
  • Declare and initialize an integer variable i=1
  • Continue a while loop till i<=n-1, where i is incremented by 1.
  • Inside the for loop we will find the value of result=result+add and add=add+5.
  • 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=6;
        int add = 5;
        System.out.print(result);
        int i=1;
        while(i<=n-1)
        {
            result +=add; 
            System.out.print("  "+result);
            add+=5;
            i++;
        }      
    }
}

Output:

Enter the Nth term “N” 
7
6 11 21 36 56 81 111

Method-3: Java Program to Print the Series 6 11 21 36 56 …N By Using User Defined Method

Approach:

The same logic as method 1 but this time we are moving the for inside a user-defined method

  • 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 6
  • Let declare another integer variable say ‘add’ and initialize it to 5
  • 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=result+add and add=add+5.
  • 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 = 6, add = 5;
        System.out.print(result);
        //for loop to print the series
        for (int i = 1; i <=n-1; i++) 
        {
            result +=add; 
            System.out.print(" "+result);
            add+=5;
        } 
    }
}

Output:

Enter the value of Nth term 'N' 
9
6 11 21 36 56 81 111 146 186

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