Factorial.java

public class Factorial {
    public static int fact(int n) {
	if(n == 1)
	    return 1;
	else
	    return n * fact(n - 1);
    }
    
    public static int fact2(int n) {
	int f = 1;
	while(n > 1) {
	    f = f  * n;
	    n--;
	}
	return f;
    }
    public static void main(String[] args) {
	System.out.println(fact(5));
	System.out.println(fact2(5));
    }
}