lintcode 2：尾部的零

题目描述

分析

代码

public class Solution {
/*
* @param n: An integer
* @return: An integer, denote the number of trailing zeros in n!
*/
public long trailingZeros(long n) {
// write your code here, try to do it without arithmetic operators.
long res = 0;
while(n>0){
res+=n/5;
n=n/5;
}
return res;
}
}