Create a method that checks a poker hand

I need to create a method that compares 5 cards in a poker hand. for the 5 cards they use a card type object I created with::

public class Card

string[] faces;

string[] suits;

and with this I have a shuffle and deal card method where I have the five cards. all I have to do is compare the suit and faces of each card and I have no idea how to do so.

Please help me.