Question

I am trying to write a program which can calculate factorial from 1-9 by iteration, but I encounter some problems while I am trying to. Please help me figure out my problems in my program, I am just learning programming.

The following is my program, please tell me what’s wrong with it:

public class iterative {
    static int ans=1;
    public static void iteration() {
        System.out.println("n n!");

        for (int n=1; n<10; n++) {
            while ((n-1)>0)
                ans=n*(n-1);
            System.out.println(n + " " + ans);
        }

    }


    public static void main(String[] args) {
        iteration();
    }
}

Answer 1

The answers above is close perfect,you also get it with the recursion:
here is code:

public class iterative {

    public static int iteration(int n) {
        int result;
        if(n==1)return n;
        else
        result = n*iteration(n-1);
     return result;
    }


    public static void main(String[] args) {
        System.out.println("Result is :" + iteration(9));
    }
}