day2, part2

day2/day-two.go

@@ -40,9 +40,7 @@ func Run() int {
 		line := scanner.Text()
 		game := ReadLine(line)
 		log.Printf("reading %s got game %+v it is %t", line, game, game.isPossible(Restriction))
-		if game.isPossible(Restriction) {
-			result += game.Num
-		}
+		result += game.minKubesPower()
 	}
 
 	return result
@@ -60,6 +58,30 @@ func (g Game)isPossible(restriction map[string]int) bool {
 	return true
 }
 
+func (g Game)minKubesPower() int {
+	runner := map[string]int{
+		"red": 0,
+		"blue": 0,
+		"green": 0,
+	}
+
+	for _, set := range g.Sets {
+		for color, seenAmount := range set {
+			if runner[color] < seenAmount {
+				runner[color] = seenAmount
+			}
+		}
+	}
+
+	result := 1
+	for _, maxSeenAmount := range runner {
+		result *= maxSeenAmount
+	}
+
+	log.Printf(">>> for %+v min kubes are %+v and minPower is %n", g, runner, result)
+	return result
+}
+
 func ReadLine(line string) Game {
 	result := Game{}
 	result.Sets = make([]map[string]int, 0)
@@ -83,7 +105,7 @@ func ReadLine(line string) Game {
 // line like this
 // 8 green, 6 blue, 20 red
 func readSet(setLine string) map[string]int {
-	log.Printf("> reading set: %s", setLine)
+	// log.Printf("> reading set: %s", setLine)
 	result := make(map[string]int)
 	itemLines := strings.Split(setLine, ",")
 	for _, line := range itemLines {