invoking method and output questions

[bluekswing]

Quick question

public static int fun(int n, int k) {
   if (k<= 0) return 2;
   if (k>=n) return 5;
   return fun(n-1, k-1) + fun(n-1, k);
}

Trying to get a feel for methods and how they work, especially being able to look at methods and try to tell what they do and what types of output I would get. For the above example, suppose I invoke the method with the following parameters fun(5,2), what would my output be?


Also, how would I invoke this method in my main()?



Much appreciate the help as always! :)

[hardwired]

    public static void main(String[] args) {
        int n = fun(5,2);
        System.out.println("n = " + n);
    }

    public static int fun(int n, int k) {
        if (k<= 0) return 2;
        if (k>=n) return 5;
        return fun(n-1, k-1) + fun(n-1, k);
    }