A famous casino is suddenly faced with a sharp decline of their revenues. They decide to offer Texas hold'em also online. Can you help them by writing an algorithm that can rank poker hands?

Task Specification

• Create a poker hand that has a method to compare itself to another poker hand:

  PokerHand.prototype.compareWith = function(hand) { ... };
  

• A poker hand has a constructor that accepts a string containing 5 cards:

  var hand = new PokerHand("KS 2H 5C JD TD");
  

• The characteristics of the string of cards are:

  • A space is used as card seperator

  • Each card consists of two characters

  • The first character is the value of the card, valid characters are:

    2, 3, 4, 5, 6, 7, 8, 9, T(en), J(ack), Q(ueen), K(ing), A(ce)

  • The second character represents the suit, valid characters are:

    S(pades), H(earts), D(iamonds), C(lubs)

• The result of your poker hand compare can be one of these 3 options:

  var Result = {
      "win": 1,
      "loss": 2,
      "tie": 3
  }
  

Poker Hands

Apply the standard Texas Hold'em rules for ranking the cards. (Ace is the highest valued card, as shown above.)

In order, from highest-ranking to lowest-ranking (e.g., a Straight Flush beats a Four-of-a-Kind), the hands are:

1. Straight Flush

   • All five cards have the same suit, and can be arranged in sequential order.
   • If two hands are both a straight flush, then the hand with the highest card value is the winner.
   • If both hands have the same values, it's a tie.

2. Four-of-a-Kind

   • Four of the cards are the same face value and one non-matching card. Suit does not matter.
   • If two hands are four-of-a-kind, then the hand with the higher value four-of-a-kind card is the winner.

3. Full House

   • Three cards of one face value and two of another. Suit does not matter.
   • If two hands are both full houses, then the hand with the higher set of three wins.

4. Flush

   • All five cards are the same suit.
   • If two hands are both a flush, follow high card rules.
   • If both flushes have the same values, it's a tie.

5. Straight

   • The five cards can be arranged in sequential order. Suit does not have to match.
   • If two hands are both a straight, then the hand with the highest face value wins.
   • If both hands have the same values, it's a tie.

6. Three-of-a-Kind

   • Three cards with the same value, and two non-matching cards.
   • If two hands are both three-of-a-kind, then the hand with the highest set of three wins.

7. Two Pair

   • Two sets of two matching cards, and a non-matching card, such as A,A,9,9,2.
   • If two hands are both two pair, compare the highest set of two from each. Then compare the lowest set of two from each. If they match, follow high-card rules.
   • If both hands have the same face values, it's a tie.

8. One Pair

   • One set of matching cards, and three non-matching cards, such as A,A,7,6,4.
   • If two hands both have one pair, compare the sets. If they match, follow high-card rules for the remaining cards.
   • If both hands have the same face values, it's a tie.

9. High Card

   • No matching values or suits, and the cards are not all in a sequence.
   • To compare two high card hands, compare the highest value on each hand. If that matches, compare the next highest value, and so on.
   • If all cards have the same value, it's a tie.