Recursion - Function to find factorial using recursion

FactorialWithRecursion.java

/**
 * Example: To learn about recursion -
 * Function to factorial using recursion
 * **/
public class FactorialWithRecursion {
    public static void main(String[] args) {
        int num = 4;
        int ans = factorial(num);
        System.out.println("Factorial of " + num + " is " + ans);
    }
    public  static  int factorial(int n){
        if(n==1)
            return 1;
        return n * factorial(n-1);
    }
}

Sample output

Factorial of 4 is 24