HDOJ 2000 ASCII码排序

import java.util.Scanner;
public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        while(sc.hasNext()){
            String str = sc.next();
        //    System.out.println("str="+str);
            char[] a = str.toCharArray();
            for(int i=0;i<str.length()-1;i++){
                for(int j=i+1;j<str.length();j++){
                    if(a[j]<a[i]){
                        char temp=a[i];
                        a[i]=a[j];
                        a[j] = temp;
                    }
                }
            }
            System.out.print(a[0]);
            for(int i=1;i<a.length;i++){
                System.out.print(" "+a[i]);
            }
            System.out.println();
        }
    }
}