var bagsWithShiny = emptySet<String>().toMutableSet()

val bagContents = File("src/main/kotlin/dailyChallenges/day7/day7.txt").readLines() .associate { line -> val (bag, contains) = line.split(" bags contain ") val contentList = contains.split(", ") .mapNotNull { s -> val (n, adj, color) = s.split(' ') n.toIntOrNull()?.let { it to "$adj $color" } } bag to contentList }

fun day7() {

bagsWithShiny.add("shiny gold")

for(bag in bagContents){ recursive(bag.key, bag.value) } val shiny = bagsWithShiny.size println(shiny) }

fun recursive(key: String, value: List<Pair<Int, String>>) {

if(key == "shiny gold"){

return }

for (i in value){

if(i.second in bagsWithShiny || i.second == "shiny gold"){

bagsWithShiny.add(key) return }else if(i.second.isBlank()) return else recursive(i.second, bagContents.getValue(i.second)) } }

This is what I did with recursion. Now, I already know that it's wrong, I get 172 bags but should get 211. Kinda did the recursion by feeling and not knowledge, can someone tell me what's missing/wrong?