Strong number
Strong number is sum of the factorial of each and every digit equal to the given number.
Example-1:
Input : n = 145 Output : Strong number Explain : 1!+4!+5! = 145. So It's "Strong number"
Example-2:
Input : n = 32 Output : Not a Strong number Explain : 3!+2!= 8. So It's not a "Strong number"
Solution
public class Main
{
public static void main(String [] args)
{
int n = 145;
int t = n;
int sum = 0;
while(t!=0)
{
sum = sum + factorial(t%10);
t = t/10;
}
if(sum==n){
System.out.print("Strong number");
}
else{
System.out.print("Not a Strong number");
}
}
public static int factorial(int num)
{
int f = 1;
for(int i=1;i<=num;i++)
{
f = f*i;
}
return f;
}
}
n = 145
sum = 0
for i in str(n):
a = i
fact = 1
for x in range(int(a),0,-1):
fact *= x
sum += fact
if(sum==int(n)):
print("Strong number")
else:
print("Not a strong number")
Output
Strong number