mirror of https://github.com/01-edu/public.git
zanninso
5 months ago
committed by
GitHub
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