HDU 2000 java中的char数组和排序函数的运用

import java.io.BufferedReader;  import java.util.*;  import java.io.Console;  import java.io.IOException;  import java.io.InputStreamReader;  import java.util.Scanner;  import javax.swing.JOptionPane; import java.util.*;  public class Main {public static void main(String[] args) {        Scanner sc = new Scanner(System.in);         while(sc.hasNext())        {        String s = sc.next();         char []ch = new char[10];        ch = s.toCharArray(); // 将字符串复制到char数组中        Arrays.sort(ch); // 排序        System.out.println(ch[0]+" "+ch[1]+" "+ch[2]);        }        sc.close();}}