LeetCode in Python 172. Factorial Trailing Zeroes 阶乘后的零
Givenanintegern,returnthenumberoftrailingzeroesinn!.Example1:Input:3Output:0Explanation:3!=6,notrailingzero.Example2:Input:5Output:1Explanation:5!=120,onetrailingzero.Note:Yoursolutionshouldbeinlogari