NYOJ題目28大數階乘

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祭出BigInteger

 

AC代碼:

import java.math.BigInteger;import java.util.Scanner;public class Main {    public static void main(String[] args) {                Scanner sc=new Scanner(System.in);                int n=sc.nextInt();                BigInteger ans=fac(n);        System.out.println(ans);            }            public static BigInteger fac(int n){        BigInteger res=BigInteger.valueOf(n);        while(--n>1) res=res.multiply(BigInteger.valueOf(n));        return res;    }}

 

題目來源: http://acm.nyist.net/JudgeOnline/problem.php?pid=28

NYOJ題目28大數階乘