In this tutorial you will learn about the Program to check Neon Number in Java and its application with practical example.
In this tutorial, we will learn to create a Java Program to check Neon Numbers in Java using Java programming.
Prerequisites
Before starting with this tutorial we assume that you are best aware of the following Java programming topics:
- Java Operators.
- Basic Input and Output function in Java.
- Class and Object in Java.
- Basic Java programming.
- If-else statements in Java.
- For loop in Java.
What is Neon Number
A number is called a neon number if the sum of digits of the square of the number is equal to the number itself
For example:->
Square of “9 is 9*9 gives => 81.
sum of digit of square : 8+1=9 (which gives the number it self).
So “9″ is a Neon Number.
Program to check Neon Number in Java
In this program , we will find given number is a Neon number or not .First of all user will be prompted to enter Number and afterword we will find the given number is a Neon Number or not. Lets have look at the code.
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import java.util.*; public class Neon_Num { public static void main(String args[]) { int sum = 0; Scanner sc = new Scanner(System.in); System.out.print("Enter any number to check Neon number: "); //Declare variable and take value form user.. int number = sc.nextInt(); //calculate square of a number int sqr = number* number; //executes until the condition false while(sqr != 0) { //finding last digit of the square int digit = sqr % 10; //adding digits to the variable sum sum = sum + digit; //removing the last digit sqr = sqr / 10; } //comparing number with sum if(number == sum) System.out.println(number + " is a Neon Number."); else System.out.println(number + " is not a Neon Number."); } } |
Output
Neon Number
Not a Neon Number
In the above program, we have first declared and initialized a set variables required in the program.
- number = it will hold entered number.
- sqr = it will calculate Square of a number.
- digit = for finding digit of a number
- sum= sum of digit.
After that we take a number from user and find Neon number.
after that we will find square of digit and sum of square digit value as shown in image below.
then we check if sum of square digit equals to number then given number is Neon number.
