Able to set score

07/code.go

@@ -7,9 +7,58 @@ import (
 	"os"
 )
 
+const (
+	NumberOfCards = 5
+	NumberOfRanks = 13
+)
+
 type Hand struct {
 	cards string
 	bid   int
+	ranks [NumberOfCards]int
+	score int
+}
+
+func (h *Hand) analyzeHand() {
+	five := false
+	four := false
+	three := false
+	pairs := 0
+	var numberInRank [NumberOfRanks]int
+
+	for i := range h.cards {
+		numberInRank[ranks[h.cards[i]]]++
+		h.ranks[i] = ranks[h.cards[i]]
+	}
+
+	for rank := 0; rank < NumberOfRanks; rank++ {
+		switch numberInRank[rank] {
+		case 5:
+			five = true
+		case 4:
+			four = true
+		case 3:
+			three = true
+		case 2:
+			pairs++
+		}
+	}
+
+	if five {
+		h.score = FiveKind
+	} else if four {
+		h.score = FourKind
+	} else if three && pairs == 1 {
+		h.score = FullHouse
+	} else if three {
+		h.score = ThreeKind
+	} else if pairs == 2 {
+		h.score = TwoPair
+	} else if pairs == 1 {
+		h.score = OnePair
+	} else {
+		h.score = HighCard
+	}
 }
 
 func readInput(file *os.File) []Hand {
@@ -28,12 +77,42 @@ func readInput(file *os.File) []Hand {
 			log.Fatalf("Failed to read hand: %s\n%s", line, err)
 		}
 
+		hand.analyzeHand()
 		hands = append(hands, hand)
 	}
 
 	return hands
 }
 
+var ranks map[byte]int
+
+func init() {
+	ranks = make(map[byte]int)
+	ranks['2'] = 0
+	ranks['3'] = 1
+	ranks['4'] = 2
+	ranks['5'] = 3
+	ranks['6'] = 4
+	ranks['7'] = 5
+	ranks['8'] = 6
+	ranks['9'] = 7
+	ranks['T'] = 8
+	ranks['J'] = 9
+	ranks['Q'] = 10
+	ranks['K'] = 11
+	ranks['A'] = 12
+}
+
+const (
+	HighCard = iota + 1
+	OnePair
+	TwoPair
+	ThreeKind
+	FullHouse
+	FourKind
+	FiveKind
+)
+
 func main() {
 	if len(os.Args) < 2 {
 		log.Fatal("You need to specify a file!")