This content originally appeared on DEV Community and was authored by Mohammad Hafijul Islam
Task
Implement a factorial function with one parameter: an integer, n. It must return the value of n! (i.e., n factorial).
Constraints
- 1 ≤ n ≤ 10
Input Format
Locked stub code in the editor reads a single integer, n, from stdin and passes it to a factorial function.
Output Format
The function must return the value of n!.
Sample
Input
4
Output
24
Explanation
We return the value of 4! = 4x3x2x1 = 24.
Solution
Connect
This content originally appeared on DEV Community and was authored by Mohammad Hafijul Islam