练习：一组字符，a,c,u,b,e,p,f,z需求：分别输出原字符序列，升序排序后的字符序列，逆序的字符序列

public class SortCharcter{ public static void main(String [] args){ //首先创建一个数组 String []arr={"a","c","u","b","e","p","f","z"};

    for(int i=0;i<arr.length;i++){
        System.out.print("****排序之前的原序列*****");
        System.out.print(arr[i]+"\t");
    }
    System.out.println();//换行
    Arrays.sort(arr);
    for(int i=0;i<arr.length;i++){
        System.out.print("****升序排序的序列*****");
        System.out.print(arr[i]+"\t");
    }
    System.out.println();//换行
    for(int i=arr.length-1;i>=0;i--){
        System.out.print("****逆序排序的序列*****");
        System.out.print(arr[i]+"\t");
     
}

}