- leetcode:172. Factorial Trailing
- [String]172. Factorial Trailing
- 172. Factorial Trailing Zeroes
- 172. Factorial Trailing Zeroes
- 172. Factorial Trailing Zeroes
- 172. Factorial Trailing Zeroes
- 172. Factorial Trailing Zeroes
- 172. Factorial Trailing Zeroes
- 172. Factorial Trailing Zeroes
- 172. Factorial Trailing Zeroes
172. Factorial Trailing Zeroes
172. Factorial Trailing Zeroes
有5有2才能组成一个0，2的个数比5多，因此主要看有几个5。
class Solution(object):
def trailingZeroes(self, n):
"""
:type n: int
:rtype: int
"""
res = 0
while n:
res += n//5
n = n//5
return res
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