g0101_0200.s0172_factorial_trailing_zeroes

Class Solution

java.lang.Object

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:

• 0 <= n <= 104

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

Constructor Summary

Constructors

Constructor and Description
Solution()

Method Summary

Modifier and Type	Method and Description
int	trailingZeroes(int n)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

Solution

public Solution()

Method Detail

trailingZeroes

public int trailingZeroes(int n)