Answer 1

You can either use iteration statements or recursion for getting the factorial of a number.

* Using for loop to get the factorial of 5

int n = 5, fact = 1;
for (int c = 1; c <= n; c++)
fact = fact*c;
System.out.println("Factorial of "+n+" is = "+fact);

* Using Recursion : function calling itself!

static int fact(int n) {
int output;
if(n==1) {
return 1;
}
output = fact(n-1)*n;
return output;
}
public static void main(String[] args) {
System.out.print(fact(5));
}