解題思路:將長整型轉換成字符串
代碼:public class Main3 {
public static void main(String[] args) {
// TODO Auto-generated method stub
Scanner input = new Scanner(System.in);
Long l =input.nextLong();
String a =Long.toString(l);
char[] c = a.toCharArray();
int n = c.length;
System.out.println("所得的數字分別是:"+c[n-4]+c[n-5]+c[n-6]+c[n-7]);
}
}