1_code_factorial_recursion

 public class factorial {

    public factorial() {
    }

    public static int factono(int n) {
        if (n != 1 && n != 0) {
            int fact1 = factono(n - 1);
            int factn = n * fact1;
            return factn;
        } else {
            return 1;
        }
    }

    public static void main(String[] args) {
        int n = 5;
        int ans = factono(n);
        System.out.println(ans);
    }
}