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package algs12;
import stdlib.*;
public class XCard implements Comparable<XCard> {
public static enum Rank {
TWO("2"),
THREE("3"),
FOUR("4"),
FIVE("5"),
SIX("6"),
SEVEN("7"),
EIGHT("8"),
NINE("9"),
TEN("10"),
JACK("J"),
QUEEN("Q"),
KING("K"),
ACE("A");
private final String name;
private Rank (String name) { this.name = name; }
public String toString () { return name; }
}
public static enum Suit {
CLUBS("C"),
DIAMONDS("D"),
HEARTS("H"),
SPADES("S");
private final String name;
private Suit (String name) { this.name = name; }
public String toString () { return name; }
}
public Rank rank;
public Suit suit;
private XCard (Rank r, Suit s) { this.rank = r; this.suit = s; }
public String toString () { return rank.toString () + suit.toString (); }
public int compareTo (XCard that) {
if (this.suit.compareTo (that.suit) < 0) return -1;
if (this.suit.compareTo (that.suit) > 0) return +1;
if (this.rank.compareTo (that.rank) < 0) return -1;
if (this.rank.compareTo (that.rank) > 0) return +1;
return 0;
}
/*
* NOTE: We don't need to override Object.equals
* because there is only one possible instance of each card.
* But if you did do it, it would look like this:
*/
//public boolean equals (Object that) {
// if (that == null)
// return false;
// if (this.getClass() != that.getClass())
// return false;
// XCard thatCard = (XCard) that;
// return (this.rank == thatCard.rank) && (this.suit == thatCard.suit);
//}
private static XCard[] protoDeck = new XCard[52];
static { // This is how you run a loop to initialize a static variable.
int i = 0;
for (Suit s : Suit.values ())
for (Rank r : Rank.values ()) {
protoDeck[i] = new XCard (r, s);
i++;
}
}
public static XCard[] newDeck () {
XCard[] deck = new XCard[protoDeck.length];
for (int i = 0; i<protoDeck.length; i++)
deck[i] = protoDeck[i];
return deck;
}
public static void main (String[] args) {
XCard[] d1 = XCard.newDeck (); final XCard c1 = d1[51];
XCard[] d2 = XCard.newDeck (); final XCard c2 = d2[50];
StdOut.println (c1 + (c1.equals(c2) ? " equals " : " does not equal ") + c2);
}
}
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