Question

Write a java program to display all the three digits special numbers.

[ hint :- if the original number and sum of the factorial of each digit are same

then number is a special number]

For example :-

N=145

1!+4!+5!=145

145 is special number.​

Answer 1

Question:-

Write a java program to display all the 3 digit special numbers.

Program:-

class Special

{

static int Factorial(int n)

{

int f=1L;

for(int i=1;i<=n;i++)

f*=i;

return f;

}

public static void main(String s[])

{

for(int i=100;i<1000;i++)

{

int a=i, s=0;

while(a!=0)

{

int d=a%10;

s+=Factorial(d);

a/=10;

}

if(s==i)

System.out.print(i+" ");

}

}

}