解题思路:可以直接用大数类型解决
注意事项:Java中大数类型是对象,所以需要用到方法multiply
参考代码:
import java.math.BigInteger;
import java.util.Scanner;
public class One {
public static void main(String[] args) {
// TODO Auto-generated method stub
Scanner sc = new Scanner(System.in);
int i = sc.nextInt();
BigInteger big = new BigInteger("1");
for (int j = 1; j <= i; j++) {
big = big.multiply(new BigInteger(String.valueOf(j)));
}
System.out.print(big);
}
}
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