comefrom: <qiyuangong>720_Longest_Word_in_Dictionary_1.java
code: public String longestWord(String[] words) {
          String ans = "";
          Set<String> wordset = new HashSet();
          for (String word: words) wordset.add(word);
          for (String word: words) {
              if (word.length() > ans.length() ||
                      word.length() == ans.length() && word.compareTo(ans) < 0) {
                  boolean good = true;
                  for (int k = 1; k < word.length(); ++k) {
                      if (!wordset.contains(word.substring(0, k))) {
                          good = false;
                          break;
                      }
                  }
                  if (good) ans = word;
              }    
          }
          return ans;
      }
masked: public String var_0 ( String [ ] var_2 ) {
    String var_4 = "" ;
    Set < String > var_7 = new HashSet ( ) ;
    for ( String var_8 : var_2 ) var_7 . add ( var_8 ) ;
    for ( String var_8 : var_2 ) {
      if ( var_8 . length ( ) > var_4 . length ( ) || var_8 . length ( ) == var_4 . length ( ) && var_8 . compareTo ( var_4 ) < 0 ) {
        boolean var_18 = true ;
        for ( int var_15 = 1 ;
        var_15 < var_8 . length ( ) ;
        ++ var_15 ) {
          if ( ! var_7 . contains ( var_8 . substring ( 0 , var_15 ) ) ) {
            var_18 = false ;
            break ;
          }
        }
        if ( var_18 ) var_4 = var_8 ;
      }
    }
    return var_4 ;
  }
  