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@@ -12,6 +12,7 @@ type Card struct {
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id int
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winning []int
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owned []int
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+ wins int
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}
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func readNumbers(part string) []int {
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@@ -104,6 +105,35 @@ func part1(cards []Card) int {
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if count > 0 {
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result += pow(count - 1)
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}
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+
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+ cards[i].wins = count
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+ }
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+
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+ return result
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+}
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+
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+func part2(cards []Card) int {
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+ var pool []int
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+ for i := range cards {
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+ if cards[i].wins > 0 {
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+ pool = append(pool, i)
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+ }
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+ }
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+
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+ var result int
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+ for {
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+ if len(pool) == 0 {
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+ break
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+ }
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+
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+ current := pool[0]
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+ pool = pool[:1]
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+ result++
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+
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+ for i := 0; i < cards[current].wins; i++ {
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+ current++
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+ pool = append(pool, current)
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+ }
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}
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return result
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@@ -123,4 +153,5 @@ func main() {
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cards := readInput(file)
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fmt.Println("Part1:", part1(cards))
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+ fmt.Println("Part2:", part2(cards))
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}
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