Method swap

core/src/processing/data/DoubleDict.java:643–653

(int a, int b)

  public void swap(int a, int b) {
    String tkey = keys[a];
    double tvalue = values[a];
    keys[a] = keys[b];
    values[a] = values[b];
    keys[b] = tkey;
    values[b] = tvalue;

//    indices.put(keys[a], Integer.valueOf(a));
//    indices.put(keys[b], Integer.valueOf(b));
  }


  /**