Write a Java program that computes the score of a Cribbage hand consisting of four hand cards and a starter card.
We represent a card with two characters. The first character is the rank, the second character is the suite.
| Rank | Character |
|---|---|
| Ace | A |
| 2 | 2 |
| 3 | 3 |
| 4 | 4 |
| 5 | 5 |
| 6 | 6 |
| 7 | 7 |
| 8 | 8 |
| 9 | 9 |
| 10 | 0 |
| Jack | J |
| Queen | Q |
| King | K |
| Suite | Character |
|---|---|
| Clubs | ♣ |
| Diamonds | ♦ |
| Hearts | ♥ |
| Spades | ♠ |
As an example, "4♥" is the four of Hearts.
A Cribbage hand is represented as a string of ten characters. The first eight characters represent the four hand cards. The last two characters represent the starter card. For example, the string "5♥5♦5♠J♣5♣" represent a Cribbage hand with five of Hearts, five of Diamonds, five of Spades and Jack of Clubs as hand card and five of Clubs as starter card.
A Cribbage hand score is calculated with the following rules.
- fifteen-twos
- two points for each separate combination of two or more cards totalling exactly fifteen (Jack, Queen and King count as 10, Ace count as 1)
- runs
- three points for a run of three consecutive cards (regardless of suit)
- four points for a run of four
- five points for a run of five
- pairs
- two points for a pair of cards of a kind
- six points for three cards of a kind (known as a "pair royal", comprising three distinct pairs)
- twelve points for four cards of a kind (a "double pair royal", comprising six distinct pairs)
- flush
- four points for a flush, where all four cards in the hand are of the same suit, with an additional point if the starter card is also of that suit.
- one point for holding the Jack of the same suit as the starter card
| Cribbage hand | Score |
|---|---|
| 5♥5♦5♠J♣5♣ | 29 |
| 0♦J♥Q♠A♣9♦ | 4 |
For more information and scoring examples look here.