11Factorial

Easyloopsmath

Write factorial(n) that returns n! = 1 × 2 × 3 × … × n.

By definition factorial(0) is 1.

Examples

Example 1

>>> factorial(5)
120

Example 2

>>> factorial(0)
1

Run examples checks the 2 examples above. Submit runs all 6 tests, including hidden edge cases, and marks the challenge solved.

solution.py

Loading Python…Ctrl/Cmd + Enter runs the examples

Test results show up here

Write factorial in the editor, then run the examples. Use print() freely: its output is shown for each test.