53 lines
1.2 KiB
Python
53 lines
1.2 KiB
Python
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def FactorialNonRecursion(number):
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"""
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>>> FactorialNonRecursion(3)
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6
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>>> FactorialNonRecursion(5)
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120
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>>> FactorialNonRecursion(0)
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1
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>>> FactorialNonRecursion(1)
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1
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"""
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if isinstance(number, float):
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raise ValueError("Non integer number is not allowed")
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if number < 0:
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raise ValueError("Negative number is not allowed") # Raise an error here
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if number == 0 or number == 1:
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return 1
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result = 1
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for i in range(1, number+1):
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result = result * i
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return result
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def FactorialRecursion(number):
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"""
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>>> FactorialRecursion(3)
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6
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>>> FactorialRecursion(5)
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120
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>>> FactorialRecursion(0)
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1
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>>> FactorialRecursion(1)
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1
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"""
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if isinstance(number, float) is True:
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raise ValueError("Non integer number is not allowed")
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if number < 0:
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raise ValueError("Negative number is not allowed")
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if number == 0 or number == 1:
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return 1
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return number * FactorialRecursion(number-1)
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def main():
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testFactorial = FactorialNonRecursion(5)
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print(testFactorial)
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testRecursion = FactorialRecursion(4)
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print(testRecursion)
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if __name__ == "__main__":
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main()
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