Recursion via factorial function
```java
int fact(int n)
    {
	    int result;
	    if(n==0 || n==1)
		    return 1;

       result = fact(n-1) * n;
       return result;
    }
```
Since factorial(0) or factorial(1) is just 1, we return 1 in these scenarios
If we have factorial(2), we would do factorial(1)\*2 = 2
fact(5) = factorial(4) \* 5 = 5\*4\*3\*2\*1 = 120