1002 写出这个数 (20分) -java

import java.util.Scanner;

public class Main {


    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        String[] strings = {"ling","yi","er","san","si","wu","liu","qi","ba","jiu"};

        String s = in.nextLine();
        char[] chars = s.toCharArray();
        int sum = 0;
        for (char c : chars) {
            int x = c - ‘0‘;
            sum += x;
        }

        String sumS = String.valueOf(sum);
        char[] charSum = sumS.toCharArray();
        StringBuilder stringBuilder = new StringBuilder();
        for (char c : charSum){
            int x = c - ‘0‘;
            stringBuilder.append(strings[x]+" ");
        }
        stringBuilder.deleteCharAt(stringBuilder.length()-1);
        System.out.println(stringBuilder.toString());
    }
}