public_test.md
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# Public Gist
This is a public gist on my self host gist site.
```python
# Factorial Function
def factorial(n: int) -> int:
''' Factorial, returns `n!`. Equal to `1*2*3*...n`.
if n < 0:
raise ArgumentError("factorial invalid for negative values")
if n <= 1:
return 1
return n * factorial(n - 1)
```
Over.
Public Gist
This is a public gist on my self host gist site.
# Factorial Function
def factorial(n: int) -> int:
''' Factorial, returns `n!`. Equal to `1*2*3*...n`.
if n < 0:
raise ArgumentError("factorial invalid for negative values")
if n <= 1:
return 1
return n * factorial(n - 1)
Over.