code: public static Note getHighestNote(Note[] notes) {
  	  Note highestNote = notes[0];
  	  for (int i=1; i<notes.length; i++)
  		  if (notes[i].isHigherThan(highestNote))
  			  highestNote = notes[i];
  	  return highestNote;
    }
docs: Returns the highest note from the given array of notes.
  @param notes An array of notes.
  @return The highes note from the given array of notes.
  @see Note#isHigherThan(Note)