HDU 1042 N! 阶乘（大数）

Problem Description

Given an integer N(0 ≤ N ≤ 10000), your task is to calculate N!

 

Input

One N in one line, process to the end of file.

 

Output

For each N, output N! in one line.

 

Sample Input

123

 

Sample Output

12
6
代码：
<pre name="code" class="java">import java.util.Scanner;import java.math.BigInteger;  public class Main {public static void main(String[] args) {Scanner cin= new Scanner(System.in);  //加快啥的          int i;              int t;          while(cin.hasNext()) //多重输入          {          t=cin.nextInt();               BigInteger res=BigInteger.ONE;            for(i=2;i<=t;i++)          {          res=res.multiply(BigInteger.valueOf((long)i));     //将i的类型改为long           }          System.out.println(res);          }}}

又一次证明JAVA的重要性  瞬间变水题啊 有木有。。