阶乘末尾的零个数

 1 import java.util.Scanner;
 2 
 3 public class Test60 {
 4 
 5     public static void main(String[] args) {
 6 
 7         Scanner in = new Scanner(System.in);
 8         int n = in.nextInt();
 9         int count = 0;
10         while(n>0){
11             count += n/5;
12             n = n/5;
13         }
14         System.out.println(count);
15         in.close();
16     }
17 
18 }