题解 | #HJ11 数字颠倒#

public class Main{
    public static void main(String[] args){
        Scanner sc=new Scanner(System.in);
        int n=sc.nextInt();
        String ans="";
        while(n/10!=0){
            ans=ans+n%10;
            n=n/10;
        }
        ans=ans+n;
        System.out.print(ans);
    }
}