Objective
Today, we're discussing JavaScript functions. Check out the attached tutorial for more details.
Task
Implement a function named factorial that has one parameter: an integer, . It must return the value of (i.e., factorial).
Input Format
Locked stub code in the editor reads a single integer, , from stdin and passes it to a function named factorial.
Constraints
Output Format
The function must return the value of .
Sample Input 0
4
Sample Output 0
24
Explanation 0
We return the value of .