N!
Time Limit: 10000/5000 MS (Java/Others) Memory Limit: 262144/262144 K (Java/Others)
Total Submission(s): 75324 Accepted Submission(s): 21992
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
Author
JGShining(极光炫影)
解析:大数。
import java.math.BigInteger; import java.util.Scanner; public class Main { static BigInteger fact(int n){ BigInteger ret = BigInteger.ONE; for(int i = 1; i <= n; ++i){ ret = ret.multiply(BigInteger.valueOf(i)); } return ret; } public static void main(String[] args){ Scanner in = new Scanner(System.in); int n; while(in.hasNext()){ n = in.nextInt(); System.out.println(fact(n)); } in.close(); } }