I have a class named Sequence. In my program I would use a list of Sequence. One of the fields in this class and a list of objects of type Match. At one point in this program I have to compare all objects of type game with another list, which will allow me to complete their attribute. (The game attribute possess a position that is their position on the sequence by comparing this position with a list of known positions I just deduct it are the attributes of the match in question.) My question then is, who should have the method of comparison between the game and the other list? If you have solution for this problem, then please help me with this. Thanks in advance.