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https://github.com/onyx-and-iris/aoc2023.git
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75 lines
1.6 KiB
Go
75 lines
1.6 KiB
Go
package main
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import log "github.com/sirupsen/logrus"
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// promote alters a hands kind based on joker rules
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func promote(hand *hand) {
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m := matches(hand.cards)
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log.Debug(m)
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switch hand.kind() {
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case fiveofakind:
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break
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case fourofakind:
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hand._kind = fiveofakind
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case fullhouse:
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if m['J'] == 2 || m['J'] == 3 {
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hand._kind = fiveofakind
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}
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log.Debug(hand.cards, " was promoted to ", hand.kind())
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case threeofakind:
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if m['J'] == 1 || m['J'] == 3 {
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hand._kind = fourofakind
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}
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log.Debug(hand.cards, " was promoted to ", hand.kind())
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case twopair:
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if m['J'] == 1 {
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hand._kind = fullhouse
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} else if m['J'] == 2 {
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hand._kind = fourofakind
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}
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log.Debug(hand.cards, " was promoted to ", hand.kind())
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case onepair:
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if m['J'] == 1 || m['J'] == 2 {
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hand._kind = threeofakind
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}
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log.Debug(hand.cards, " was promoted to ", hand.kind())
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case highcard:
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hand._kind = onepair
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log.Debug(hand.cards, " was promoted to ", hand.kind())
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}
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}
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// two returns the sum of products of hand values by bids
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// it uses new joker rules
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func two(lines []string) (int, error) {
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for _, hand := range hands {
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if containsChar(hand.cards, "J") {
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promote(hand)
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}
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}
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strength := []rune{'A', 'K', 'Q', 'T', '9', '8', '7', '6', '5', '4', '3', '2', 'J'}
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log.Debug("strength: ", strength)
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sortByKindAndStrength(strength)
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sum := 0
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var debugNames = map[int]string{
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0: "highcard",
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1: "onepair",
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2: "twopair",
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3: "threeofakind",
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4: "fullhouse",
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5: "fourofakind",
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6: "fiveofakind",
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}
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for i, hand := range hands {
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log.Debug(hand.cards, ": ", hand.bid, " by ", i+1, " || ", debugNames[hand.kind()])
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sum += (i + 1) * hand.bid
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}
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return sum, nil
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}
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