comefrom: <awangdev>[lint]. Anagrams_1.java
code: public List<String> anagrams(String[] strs) {
          List<String> rst = new ArrayList<>();
          if (strs == null || strs == null) return rst;
          Map<String, List<String>> map = new HashMap<>();
  		for (String word : strs){
              int[] arr = new int[26];
              for (char c : word.toCharArray()) arr[c - 'a']++;
              String key = Arrays.toString(arr);
              map.putIfAbsent(key, new ArrayList<>());
              map.get(key).add(word);
          }
          
          for (List<String> list : map.values()) {
              if (list.size() >= 2) rst.addAll(list);
          }
          return rst;
      }
masked: public List < String > var_1 ( String [ ] var_2 ) {
    List < String > var_5 = new ArrayList < > ( ) ;
    if ( var_2 == null || var_2 == null ) return var_5 ;
    Map < String , List < String >> var_9 = new HashMap < > ( ) ;
    for ( String var_10 : var_2 ) {
      int [ ] var_12 = new int [ 26 ] ;
      for ( char var_14 : var_10 . toCharArray ( ) ) var_12 [ var_14 - 'a' ] ++ ;
      String var_18 = Arrays . toString ( var_12 ) ;
      var_9 . putIfAbsent ( var_18 , new ArrayList < > ( ) ) ;
      var_9 . get ( var_18 ) . add ( var_10 ) ;
    }
    for ( List < String > var_23 : var_9 . values ( ) ) {
      if ( var_23 . size ( ) >= 2 ) var_5 . addAll ( var_23 ) ;
    }
    return var_5 ;
  }
  