题解 | #阶乘末尾0的数量#
阶乘末尾0的数量
https://www.nowcoder.com/practice/aa03dff18376454c9d2e359163bf44b8
import java.util.*; public class Solution { /** * the number of 0 * @param n long长整型 the number * @return long长整型 */ public long thenumberof0 (long n) { long count_5 = 0 ;//1~n中能分解的5的倍数 long base = 5 ;//5,25,125 while(n >= base) { count_5 += n / base ; base *= 5 ; } return count_5 ; } }