Add factorial.

This commit is contained in:
Oleksii Trekhleb 2018-04-18 13:05:07 +03:00
parent 77e897b3b9
commit a10009df64

View File

@ -9,7 +9,7 @@ than or equal to `n`. For example:
```
| n | n! |
| ----- | :-------------------------: |
| ----- | --------------------------: |
| 0 | 1 |
| 1 | 1 |
| 2 | 2 |