mirror of https://github.com/01-edu/public.git
![47645687+zanninso@users.noreply.github.com](/git/assets/img/avatar_default.png)
![GitHub](/git/assets/img/avatar_default.png)
1 changed files with 40 additions and 0 deletions
@ -0,0 +1,40 @@
|
||||
## Factorial |
||||
|
||||
### Instructions |
||||
|
||||
In a file named `Factorial.java` write a function `factorial` that calculates the factorial of a non-negative integer given as a parameter. |
||||
|
||||
> The factorial of a non-negative integer n (denoted as n!) is the product of all positive integers less than or equal to n. For example, 5! = 5 × 4 × 3 × 2 × 1 = 120. |
||||
|
||||
> Note: The factorial of 0 is 1, according to the [convention](https://www.chilimath.com/lessons/intermediate-algebra/zero-factorial/) |
||||
|
||||
### Expected Functions |
||||
|
||||
```java |
||||
public class Factorial { |
||||
public static Integer factorial(Integer n) { |
||||
// your code here |
||||
} |
||||
} |
||||
``` |
||||
|
||||
### Usage |
||||
|
||||
Here is a possible `ExerciseRunner.java` to test your function : |
||||
|
||||
```java |
||||
public class ExerciseRunner { |
||||
public static void main(String[] args) { |
||||
System.out.println(Factorial.factorial(3)); |
||||
} |
||||
} |
||||
``` |
||||
|
||||
and its output : |
||||
|
||||
```shell |
||||
$ javac *.java -d build |
||||
$ java -cp build ExerciseRunner |
||||
6 |
||||
$ |
||||
``` |
Loading…
Reference in new issue