19 lines
332 B
Python
19 lines
332 B
Python
#!/usr/bin/python3
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from math import gamma
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def factorial(n):
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n = int(n)
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result = 1
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if(n < 0):
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raise ValueError("n must be greater than 0")
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if(n == 0):
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return result
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for i in range(1, n + 1):
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result *= i
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return result
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if( __name__ == "__main__"):
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print("factorial(5) = ", factorial(5))
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print("gamma(6) = ", gamma(6))
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