HDU1042---N!

N!

Time Limit: 10000/5000 MS (Java/Others)    Memory Limit: 262144/262144 K (Java/Others)
Total Submission(s): 77404    Accepted Submission(s): 22617

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

1
2
3

 

Sample Output

1
2
6

 

Java大数水一发：

import java.math.BigInteger;
import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		Scanner s = new Scanner(System.in);
		while(s.hasNext()) {
			BigInteger bi = new BigInteger("1");
			int t = s.nextInt();
			for(int i=1;i<=t;i++) {
				String ss = i + "";
				BigInteger t1 = new BigInteger(ss);
				bi=bi.multiply(t1);
			}
			System.out.println(bi);
		}	
		s.close();
	}
}