code: public static MutableDoubleTuple createRandom(int size, Random random)
      {
         MutableDoubleTuple t = create(size);
         randomize(t, random);
         return t;
      }
docs: Creates a tuple with the given size that
  is filled with random values in [0,1)
  
  @param size The size
  @param random The random number generator
  @return The new tuple