oj1107java

import java.math.*;
import java.util.*;

public class DEMO2 {
    public static void main(String[] args) {
        Scanner input = new Scanner(System.in);
        int n = input.nextInt();
        System.out.print(n);
        while(true){
            int k = hui(n);
            if(n==k) {
                System.out.print(" "+n);
                break;
            }
            else {
                n=k+n;
                if(n==hui(n)){
                    System.out.println(" " +n);
                    break;
                }
                else{
                    System.out.print(" "+n);
                }

            }
        }
    }
    public static int hui(int n) {
        int i = 0;
        int num;
        int k = n;
        int yuan = n;
        while (k != 0) {
            num = k % 10;
            k = k / 10;
            i++;
        }
        double xin = 0;
        int j=i;
        while (j!=0){
            int b = n%10;
            n/=10;
            xin += b*Math.pow(10,j-1);
            j--;
        }
        return (int) xin;
    }
}

报错了，查答案：

int n = input.nextInt();
        System.out.print(n);
        int m = hui(n);
        while (m!=n){
            n+=m;
            m=hui(n);
            System.out.print(" "+n);
        }