Added Trailing Zero Algo

Created an algorithm that return the trailing zeroes of a number
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Tejas Varshney 2024-10-15 22:47:26 +05:30 committed by GitHub
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commit 1fe5cad5a3
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maths/trailing_zeroes.py Normal file
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"""
https://en.wikipedia.org/wiki/Trailing_zero
"""
def trailing_zeroes(num: int) -> int:
"""
Finding the Trailing Zeroes i.e. zeroes present at the end of number
Args:
num: A integer.
Returns:
No. of zeroes in the end of an integer.
>>> trailing_zeroes(1000)
3
>>> trailing_zeroes(102983100000)
5
>>> trailing_zeroes(0)
1
>>> trailing_zeroes(913273)
0
"""
ans = 0
if num < 0:
return -1
if num == 0:
return 1
while num > 0:
if num % 10 == 0:
ans += 1
else:
break
num /= 10
return ans
if __name__ == "__main__":
import doctest
doctest.testmod()