Print Strong numbers in a given range(1 to n)

Strong Number:- A number whose sum of the factorial of its digit is equal to the number itself.

Example:-

 145, 40585........

Problem statement:- Program to find out all Strong numbers present within a given range.

Sample Input/Output:-

Sample Input First: 10 200                    Sample Output First: 145

Sample Input Second: 50 500000         Sample Output Second: 145 40585

Data requirement:-

   Input Data:- range1, range2

  Output Data:-i

  Additional Data:-num1, num2, j, fact, sum

Program in C
  

Here is the source code of the C Program to Find out all Strong numbers present within a given range.

Code:

#include<stdio.h>

int main()

{

    int range1,range2,i,j;

    printf("Enter a range:");

    scanf("%d %d", &range1, &range2);

    printf("Strong numbers between %d and %d are: ",range1,range2);

    for(i=range1;i<=range2;i++)

    {

    int num2=i;

    int num1=i;

    int sum=0;

    int fact=1;

   while(num1!=0)

   {   fact=1;

       int rem=num1%10;

       num1=num1/10;

       for(j=1;j<=rem;j++)

        fact=fact*j;

       sum=sum+fact;

   }

   if(sum==num2)

    printf("%d ",i);

    }

}

Input/Output:

Enter a range:

10

200

Strong numbers between 10 and 200 are: 145 

Program in C++
  

Here is the source code of the C++ Program to print Strong numbers in a given range.

Code:

#include<iostream>

using namespace std;

int main()

{

    int range1,range2;

    cout<<"Enter a range:";

    cin>>range1>>range2;

    cout<<"Strong numbers between "<<range1<<" and "<<range2<<" are: ";

    for(int i=range1;i<=range2;i++)

    {

    int num2=i;

    int num1=i;

    int sum=0;

    int fact=1;

   while(num1!=0)

   {   fact=1;

       int rem=num1%10;

       num1=num1/10;

       for(int j=1;j<=rem;j++)

        fact=fact*j;

       sum=sum+fact;

   }

   if(sum==num2)

    cout<<i<<" ";

    }

}

Input/Output:

Enter a range:

50

500000

Strong numbers between 50 and 500000 are: 145 40585

Program in Java
  

Here is the source code of the Java Program to Find out all primes numbers present within a given range.

Code:

import java.util.Scanner;

public class StrongNumberInRange {

public static void main(String[] args) {

Scanner cs=new Scanner(System.in);

int firstnumber, endnumber, i;

       System.out.println("Enter the First number:");

       firstnumber=cs.nextInt();

       System.out.println("Enter the Last number:");

       endnumber=cs.nextInt();

  System.out.println("Strong numbers between "+firstnumber+" and "+endnumber+" are:");

  for(i=firstnumber;i<=endnumber;i++)

    {

    int num2=i;

    int num1=i;

    int sum=0;

    int fact=1;

   while(num1!=0)

   {   fact=1;

       int rem=num1%10;

       num1=num1/10;

       for(int j=1;j<=rem;j++)

        fact=fact*j;

       sum=sum+fact;

   }

   if(sum==num2)

    System.out.println(i+" ");

    }

cs.close();

}

}

Input/Output:

Enter the First number:

500

Enter the Last number:

100000000

Strong numbers between 500 and 100000000 are:

40585 

Program in Python
  

Here is the source code of the Python Program to Find out all Strong numbers present within a given range.

Code:

print("Enter a range:")
range1=int(input())
range2=int(input())
print("Strong numbers between ",range1," and ",range2," are: ")
for i in range(range1,range2+1):
    num2=i
    num1=i
    sum=0
    while(num1!=0):
        fact=1
        rem=num1%10
        num1=int(num1/10)
        for j in range(1,rem+1):
            fact=fact*j
        sum=sum+fact
    if sum==num2:
print(i,end=" ") 

Input/Output:

Enter a range:

10

70000000

Strong numbers between  10  and  70000000  are: 

145 40585 

Most Recommend Questions:-

• Write a program to check whether a given number is a strong number or not.

• Write a program to find the nth strong number.

• Write a program to find out all Perfect numbers present within a given range.

• Write a program to find the nth Hashed number.

• Write a program to find the number of odd and even digits in the given number.

More Questions:-

Numbers Programming Problem and Solution(70)

C/C++/Java/Python Practice Question