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class Solution {
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  public String arrangeWords(String text) {
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    text = text.replace(text.charAt(0) + "", (char) (text.charAt(0) + 32) + "");
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    String[] arr = text.split(" ");
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    Arrays.sort(
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        arr,
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        new Comparator<String>() {
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          public int compare(String s1, String s2) {
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            return Integer.compare(s1.length(), s2.length());
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          }
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        });
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    StringBuilder str = new StringBuilder(arr[0]);
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    for (int i = 1; i < arr.length; i++) str.append(" " + arr[i]);
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    text = (char) (str.charAt(0) - 32) + str.substring(1, str.length());
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    return text;
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  }
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}
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// UP-VOTE IF HELPFUL