Friday , 23 June 2017
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Java Program to check for Disarium Number

Question:

Write a Program in Java to input a number and check whether it is a Disarium Number or not.

Note: A number will be called DISARIUM if sum of its digits powered with their respective position is equal to the original number.

For example 135 is a DISARIUM
(Workings 11+32+53 = 135, some other DISARIUM are 89, 175, 518 etc)

Programming Code:

/**
* The class Disarium inputs a number and checks whether
* it is a Disarium number or not
* @author : www.javaforschool.com
* @Program Type : BlueJ Program - Java
*/

import java.io.*;
class Disarium
    {
    public static void main(String[] args)throws IOException
        {
            BufferedReader br=new BufferedReader (new InputStreamReader(System.in));
            System.out.print("Enter a number : ");
            int n = Integer.parseInt(br.readLine());
            int copy = n, d = 0, sum = 0;
            String s = Integer.toString(n); //converting the number into a String
            int len = s.length(); //finding the length of the number i.e. no.of digits
            
            while(copy>0)
            {
                d = copy % 10; //extracting the last digit
                sum = sum + (int)Math.pow(d,len);
                len--;
                copy = copy / 10;
            }
            
            if(sum == n)
                System.out.println(n+" is a Disarium Number.");
            else
                System.out.println(n+" is not a Disarium Number.");
        }
    }

Output:

Enter a Number : 135
135 is a Disarium Number.

Enter a Number : 219
219 is not a Disarium Number.

Enter a Number : 89
89 is a Disarium Number.

Check Also

[Question 1] ISC 2017 Computer Practical Paper Solved – Box Packing

Solution of Program 1 of ISC 2017 Computer Science Paper 2 (Practical) Exam. Java program to input number of boxes to be packed and display the break-up of the cartons used in descending order of capacity

3 comments

  1. Good and helpful for me

  2. S.Sulthan Mohiddin

    Yes please keep sending this type of interesting programs.

  3. please keep sending such interesting programs…..thank you

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