In the previous article we have discussed about Java Program to Print Series 3 9 27 81 243 729 …N
In this article we are going to see how to print the series 4 16 64 256 1024 6144…N using Java programming language
Java Program to Print Series 4 16 64 256 1024 6144…N
On observing the pattern carefully, we can see the series starts from 4 and the next element is the multiplication of previous element with 4.
Example:
When value of N=5 Then series= 4 16 64 256 1024
Let’s see different ways to print the series 4 16 64 256 1024 6144…N
Method-1: Java Program to Print Series 4 16 64 256 1024 6144…N By Using For Loop
Approach:
- Declare an integer variable say ‘
n
’ which holds the value of number of terms in the series. - Create Scanner class object.
- Prompt the user to enter a number as value of
n
. - Let declare an integer variable ‘
result
‘ & initialize it to 4 - Use a for loop
from i =1 to i<n
incremented by 1 - Inside for loop we will increment the result with 4 times of the previous result.
- 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 number of terms "); int n = s.nextInt(); int result = 4; System.out.print(result); //for loop to print the series for (int i = 1; i < n; i++) { result *=4; System.out.print(" "+result); } } }
Output: Enter the value of number of terms 5 4 16 64 256 1024
Method-2: Java Program to Print Series 4 16 64 256 1024 6144…N By Using While Loop
Approach:
- Declare an integer variable say ‘
n
’ which holds the value of number of terms in the series. - Create Scanner class object.
- Prompt the user to enter a number as value of
n
. - Let declare an integer variable ‘
result
‘ & initialize it to 4 - Declare and initialize an integer variable
i=1
- Continue a while loop till
i<n
incremented by 1. - Inside while loop we will increment the result with 4 times of the previous result.
- Print the result in the series.
Program:
import java.util.*; public class Main { public static void main(String [] args) { Scanner s = new Scanner(System.in); //Taking input of number of elements in the series System.out.println("Enter the value of number of terms” "); int n = s.nextInt(); int result=4; System.out.print(result); int i=1; while(i<n) { result *=4; System.out.print(" "+result); i++; } } }
Output: Enter the value of number of terms 7 4 16 64 256 1024 4096 16384
Method-3: Java Program to Print Series 4 16 64 256 1024 6144…N By Using While Loop
Approach:
- Declare an integer variable say ‘
n
’ which holds the value of number of terms in the series. - Create Scanner class object.
- Prompt the user to enter a number as value of
n
. - Call a user defined method say
printSeries()
by passing ‘n
‘ as parameter. - Inside method declare an integer variable ‘
result
‘ and initialize it to 4. - Use a for loop
from i =1 to i<n
incremented by 1. - Inside for loop we will increment the result with 4 times of the previous result.
- 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 number of terms "); int n = s.nextInt(); // calling printSeries() method to print the series printSeries(n); } public static void printSeries(int n) { int result = 4; System.out.print(result); //for loop to print the series for (int i = 1; i < n; i++) { result *=4; System.out.print(" "+result); } } }
Output: Enter the value of number of terms 7 4 16 64 256 1024 4096 16384
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