LintCode Java——尾部的零

设计一个算法，计算出n阶乘中尾部零的个数

public long trailingZeros(long n) {
        // write your code here, try to do it without arithmetic operators.
        long count = 0;
        long temp = n/5;
        while(temp != 0){
            count = count+temp;
            temp = temp/5;
        }
        return count;
    }

写完啦~可以吃饭了