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Merged
merged 6 commits into from
Jan 18, 2020
Merged

Create factorial_iterative.py #1693

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bd96a91
Create factorial_iterative.py
pooja-git11 Jan 17, 2020
7da46aa
Update factorial_iterative.py
pooja-git11 Jan 17, 2020
648e170
Update factorial_iterative.py
pooja-git11 Jan 18, 2020
9f75648
Update factorial_iterative.py
pooja-git11 Jan 18, 2020
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print(f"factorial{n} is {factorial(n)}")
cclauss Jan 18, 2020
ab332a7
Update factorial_recursive.py
cclauss Jan 18, 2020
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19 changes: 19 additions & 0 deletions maths/factorial_iterative.py
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# factorial of a number


n=int(input("Enter a number"))
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This line will fail our automated testing unless it is indented under if __name__ == "__main__": as discussed in CONTRIBUTING.md

def factorial(n):
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See other functions in this repo to see how type hints and doctests work. They are required.

fact=1
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@cclauss cclauss Jan 17, 2020 •
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The function should raise a ValueError just like math.factorial() does:

% python3

>>> import math
>>> math.factorial(-1)
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
ValueError: factorial() not defined for negative values

for i in range(1,n+1):
fact*=i
return fact

if n>=0:
print(factorial(n))
else:
raise ValueError("ValueError: factorial() not defined for negative vlaues")