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advent-20
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improve day 7 perf again

master
Araozu 2024-03-11 19:04:54 -05:00
parent a1018af799
commit b6da4f8f81
1 changed files with 8 additions and 8 deletions
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16
solutions/day07.go
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@ -57,7 +57,7 @@ func parseBagStatement(bagStatement string) Bag {
return Bag{color: bagColor, contents: bagContents, contentsCount: -1}
}
func bagContainsShinyGold(bagColor string, bagMap map[string]Bag) bool {
func bagContainsShinyGold(bagColor string, bagMap map[string]*Bag) bool {
bag := bagMap[bagColor]
if bag.containsShinyGold {
return true
@ -83,13 +83,13 @@ func Day07Part01(isTest bool) int {
input := ReadInput("07", isTest)
groups := strings.Split(input, "\n")
bags := make(map[string]Bag)
bags := make(map[string]*Bag)
bagColors := make([]string, len(groups))
// parse and collect the bags
for i, statement := range groups {
parsedBag := parseBagStatement(statement)
bags[parsedBag.color] = parsedBag
bags[parsedBag.color] = &parsedBag
bagColors[i] = parsedBag.color
}
@ -105,7 +105,7 @@ func Day07Part01(isTest bool) int {
return shinyGoldContainers
}
func countInnerBags(bag *Bag, bagMap map[string]Bag) int {
func countInnerBags(bag *Bag, bagMap map[string]*Bag) int {
if bag.contentsCount != -1 {
return bag.contentsCount
}
@ -117,7 +117,7 @@ func countInnerBags(bag *Bag, bagMap map[string]Bag) int {
nextBagCount := nextBagStruct.count
nextBag := bagMap[nextBagStruct.color]
innerBagsCount += nextBagCount + nextBagCount*countInnerBags(&nextBag, bagMap)
innerBagsCount += nextBagCount + nextBagCount*countInnerBags(nextBag, bagMap)
}
return innerBagsCount
@ -127,15 +127,15 @@ func Day07Part02(isTest bool) int {
input := ReadInput("07", isTest)
groups := strings.Split(input, "\n")
bags := make(map[string]Bag)
bags := make(map[string]*Bag)
// parse and collect the bags
for _, statement := range groups {
parsedBag := parseBagStatement(statement)
bags[parsedBag.color] = parsedBag
bags[parsedBag.color] = &parsedBag
}
shinyGoldBag := bags["shiny gold"]
return countInnerBags(&shinyGoldBag, bags)
return countInnerBags(shinyGoldBag, bags)
}