*
* wap to accept a number and check it is special number or not.
* A number is said to be special if the sum of the factorial of its digits is equal to the number itself.
* example 145.
* 1!+4!+5!=145
* 1+24+120=145
*
* using a function int fact(int n)- accepts a number and returns its factorial
*/
Answers
HEY BUDDY HERE IS UR ANSWER
Explanation:
import java.util.*;
public class JavaHungry
{
public static void main(String args[])
{
System.out.println("Enter any number : ");
Scanner scan = new Scanner(System.in);
int inputNumber = scan.nextInt();
boolean result = specialnumber(inputNumber);
if (result == true)
System.out.println(inputNumber + " is a Special number");
if (result == false)
System.out.println(inputNumber + " is NOT a Special number");
}
public static boolean specialnumber(int inputNumber)
{
// Create a copy of the inputNumber
int temp = inputNumber;
// Initialize sumOfDigits of inputNumber
int sumOfDigits = 0;
/* Calculate the sum of factorial of
digits */
while (temp != 0) {
// Get the rightmost digit
int currentDigit = temp % 10;
sumOfDigits = sumOfDigits + factorial(currentDigit);
temp = temp/10;
}
/* If sumOfDigits is equal to inputNumber then
the number is Special, otherwise not */
return (sumOfDigits == inputNumber);
}
public static int factorial(int number) {
if (number == 1 || number == 0)
return 1;
else
return (number * factorial(number -1));
}
}
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