Package g0101_0200.s0172_factorial_trailing_zeroes

Class Solution

java.lang.Object
g0101_0200.s0172_factorial_trailing_zeroes.Solution
public class Solution extends java.lang.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
    Description
    Solution()
     

  • Method Summary

    Modifier and Type
    Method
    Description
    int
    trailingZeroes(int n)
     

    Methods inherited from class java.lang.Object

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

  • Constructor Details

    • Solution

      public Solution()

  • Method Details

    • trailingZeroes

      public int trailingZeroes(int n)