g0101_0200.s0172_factorial_trailing_zeroes.Solution

public class Solution extends Object

172 - Factorial Trailing Zeroes.

Medium

Given an integer n, return the number of trailing zeroes in n!.

Note that n! = n * (n - 1) * (n - 2) * ... * 3 * 2 * 1.

Example 1:

Input: n = 3

Output: 0

Explanation: 3! = 6, no trailing zero.

Example 2:

Input: n = 5

Output: 1

Explanation: 5! = 120, one trailing zero.

Example 3:

Input: n = 0

Output: 0

Constraints:

Follow up: Could you write a solution that works in logarithmic time complexity?

Class Solution

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