翻转“I am a student.”得到“students. a am I”。单词以空格间隔为标准.

翻转“I am a student.”得到“students. a am I”。单词以空格间隔为标准.

 

public class Test2 {
    public void reverse(){
    String inputStr = "";
           InputStreamReader inputStream = new InputStreamReader(System.in);
           BufferedReader reader = new BufferedReader(inputStream);
           
           try
           {
                 System.out.println("Please  input a string in the below command line:");
                 inputStr=reader.readLine();
           }
           catch(IOException e)
           {
                 System.out.println("I/O error occurs!");
                 System.out.println(e.getMessage());
                 e.printStackTrace();
           }
  
           StringBuilder sb=new StringBuilder(inputStr);
           StringBuilder sb2=new StringBuilder();
           String [] sbCopy=sb.toString().split(" ");
           for(int i=sbCopy.length-1;i>=0;i--){
               StringBuilder sb3=new StringBuilder(sbCopy[i]);
               sb2.append(sb3+" ");          
           }
           System.out.println(sb2);  
    }
   
    public static void main(String []args){
        (new Test2()).reverse();
    }
}