[FIXED] Reverse The Words In A Sentence But Not The Letters

Issue

I want to make a program to reverse the words only, not the letters.

For example...

i love india

... should become...

india love i

Another example...

 google is the best website

... should become...

 website best the is google

With spaces I have thoroughly researched on it but found just nothing.
My logic is that I should just give you my program that is not working. If you find a small error in my code please give the solution for it and a corrected copy of my program. Also, if you are not too busy, can you please give me the logic in a flow chart.

my logic is here

Thank you for your time.

Solution

class Solution {
     public String reverseWords(String s) {
        if (s == null || s.length() == 0) {
            return "";
         }

    // split to words by space
    String[] arr = s.split(" ");
    StringBuilder sb = new StringBuilder();
    for (int i = arr.length - 1; i >= 0; --i) {
        if (!arr[i].equals("")) {
            sb.append(arr[i]).append(" ");
        }
    }
    return sb.length() == 0 ? "" : sb.substring(0, sb.length() - 1);
  }
}

Answered By - vk1
Answer Checked By - Dawn Plyler (JavaFixing Volunteer)