title: Pick random Card from a "strange" Deck (Java)
body: <p>I'm trying to implement a new card game in Java(didn't invent it, just have to), where the deck is kind of different from the traditional ones. Deck is made of 90 cards, divided this way: 13 orange cards, 13 white cards, 13 black cards, 13 blue cards, 13 grey cards, 13 purple cards and 12 jolly. All these cards are named "Political Cards".</p>
  
  <p>I would like to represent the deck as an Array of 7 elements:</p>
  
  <pre><code>public class PoliticalDeck {
      private PoliticalCard[] deck; 
  
      public PoliticalDeck() {
          deck = new PoliticalCard[7]; 
      }
  
      //estrai una carta a caso
      public void pickRandomCard() {
  
      }
  }
  </code></pre>
  
  <p>Could this be correct? How could I implement the card picking method?</p>