comefrom: <gouthampradhan>hashing_NumberOfAtoms_1.java
code: private Map<String, Integer> merge(Map<String, Integer> left, Map<String, Integer> right) {
      for (String k : left.keySet()) {
        if (right.containsKey(k)) {
          right.put(k, right.get(k) + left.get(k));
        } else right.put(k, left.get(k));
      }
      return right;
    }
masked: private Map < String , Integer > var_0 ( Map < String , Integer > var_1 , Map < String , Integer > var_2 ) {
    for ( String var_3 : var_1 . keySet ( ) ) {
      if ( var_2 . containsKey ( var_3 ) ) {
        var_2 . put ( var_3 , var_2 . get ( var_3 ) + var_1 . get ( var_3 ) ) ;
      }
      else var_2 . put ( var_3 , var_1 . get ( var_3 ) ) ;
    }
    return var_2 ;
  }
  