基于空格拆分字符串

好吧,句子只是(长)字符串。我想用相反的方式展示这些句子。例子: "StackOverflow is a community of awesome programmers" "programmers awesome of community a is StackOverflow" .

所以我的想法是用一个分隔符,这里是 空白处

到目前为止,我只能输出文本,但没有空格( programmersawesomeofcommunityaisStackOverflow

@Override
        public void onClick(View v) {
            String[] sentence = input.getText().toString().split(" "); //This split() method is the culprit!
            ArrayList<String> wordArray = new ArrayList<>();
            for (String word : sentence) {
                    wordArray.add(word);
            }
            Collections.sort(wordArray);
            StringBuilder invertedSentence = new StringBuilder();
            for (int i = wordArray.size(); i > 0; i--) {
                invertedSentence.append(wordArray.get(i - 1));
            }
            output.setText(invertedSentence.toString());
        }
    });

当系统检测到空白时,如何将句子保存(自动)在列表中作为拆分词?在输出语句中添加空格?