1 public class Solution {
 2     public String ReverseSentence(String str) {
 3              String[]ss=str.split(" ");
 4         if(ss.length==0)
 5             return str;
 6         String t="";
 7         for(int i=ss.length-1;i>=0;i--){
 8             if(i!=ss.length-1)
 9              t+=" "+ss[i];
10             else
11             t+=ss[i];
12                 
13         }
14         return t;
15     }
16 }