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Coding workflows · Factorial trailing zeros
03
A concrete starting point
Count the decimal trailing zeros of a nonnegative integer factorial without constructing the factorial. Check zero and powers of five, rejecting negative, fractional and Boolean arguments.
Define the change
Describe the input, expected output and boundaries that must stay intact.
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Check the outcome
Compare actual behavior with the expected result. If a check fails, investigate it before applying more changes.
Factorial trailing zeros
A concrete starting point
def factorial_zeros(n):
if type(n) is not int or n < 0:
raise ValueError("factorial.input")
total = 0
while n:
n //= 5
total += n
return totalThe example is a starting point for a real project, not a claim that generated code is already tested. Adjust paths, dependencies and expected behavior to match your application.