Niven/Harshad Number
A positive integer which is divisible by the sum of its digits, also called a Niven/Harshad number.
Example - 81 is divisible by 8+1= 9 . 81 is Niven Number.
Algorithm and Program below :-
Algorithm :-
Input a number to check for Niven Number
Store it in a new variable
Store the sum of its digit in a variable
Check if the number is divisible by the sum of digits without leaving remainder
If it is divisible print "It is Niven Number"
If not print "It is not Niven Number"
Program :-
import java.io.*; import java.util.*; class Niven { public static void main(String args[]) { Scanner in= new Scanner(System.in); int n,p,rev,s=0; System.out.println("Enter Number"); n= in.nextInt(); // Input number from user p=n; // store the entered number in "p" variable while(n>0) { rev=n%10; // extract last digit of the number s=s+rev; // store the sum of digits n=n/10; // extract all digit except the last } if(p%s==0) // if number is divisible by sum of digits leaving no remainder { System.out.println("It is Niven/Harshad Number : "+p); } else { System.out.println("It is not Niven/Harshad Number : "+p); } } // end of main method } // end of class
Note : The program is written in the easiest way possible so try understand it. If you face any problem in understanding this program than feel free to contact/comment. All the Best :)
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