Day14

src/day14/day14.go

@@ -0,0 +1,63 @@
+package main
+
+import (
+	"AOC2021/src/helper"
+	"fmt"
+	"os"
+	"strings"
+)
+
+func main() {
+	args := os.Args[1:]
+	input, err := helper.GetInput(args[0])
+	if err != nil {
+		fmt.Println(err)
+	}
+	startPolymer := input[0]
+	insertionRuleMap := make(map[string]rune)
+	for _, row := range input[2:] {
+		splitRow := strings.Split(row, " -> ")
+		insertionRuleMap[splitRow[0]] = rune(splitRow[1][0])
+	}
+	runeMap := make(map[rune]int)
+	pairMap := make(map[string]int)
+	for i := 0; i < len(startPolymer); i++ {
+		if i < len(startPolymer)-1 {
+			pairMap[startPolymer[i:i+2]]++
+		}
+		runeMap[rune(startPolymer[i])]++
+	}
+	for i := 0; i < 10; i++ {
+		pairMap = insert(pairMap, insertionRuleMap, &runeMap)
+	}
+	calculateResultNumber(runeMap, 99999)
+	for i := 0; i < 30; i++ {
+		pairMap = insert(pairMap, insertionRuleMap, &runeMap)
+	}
+	calculateResultNumber(runeMap, 99999999999999)
+}
+
+func calculateResultNumber(runeMap map[rune]int, minAmountDefault int) {
+	maxAmount := 0
+	minAmount := minAmountDefault
+	for _, val := range runeMap {
+		if val > maxAmount {
+			maxAmount = val
+		}
+		if val < minAmount {
+			minAmount = val
+		}
+	}
+	fmt.Println(maxAmount - minAmount)
+}
+
+func insert(pairMap map[string]int, insertionRuleMap map[string]rune, runeMap *map[rune]int) map[string]int {
+	newPairmap := make(map[string]int)
+	for pair, amount := range pairMap {
+		insertionValue := insertionRuleMap[pair]
+		(*runeMap)[insertionValue] += amount
+		newPairmap[string(insertionValue)+pair[1:]] += amount
+		newPairmap[pair[:1]+string(insertionValue)] += amount
+	}
+	return newPairmap
+}

src/day14/day14Input.txt

@@ -0,0 +1,102 @@
+KFVHFSSVNCSNHCPCNPVO
+
+KS -> O
+SP -> V
+OH -> F
+VC -> P
+BO -> S
+CV -> H
+FO -> N
+KV -> V
+OV -> B
+NB -> K
+FS -> F
+KB -> N
+HK -> C
+VP -> B
+SV -> S
+FP -> P
+BS -> B
+BP -> K
+OS -> K
+PB -> C
+HB -> H
+VN -> S
+FB -> C
+OC -> N
+OO -> F
+PC -> O
+FK -> K
+OP -> V
+BH -> C
+NP -> C
+KF -> H
+SK -> F
+HN -> O
+CB -> O
+SN -> N
+VF -> S
+KC -> H
+HF -> V
+NC -> P
+BN -> F
+KO -> C
+PS -> B
+HO -> S
+CH -> O
+KP -> K
+VK -> V
+BB -> V
+BF -> P
+CS -> K
+CN -> H
+PK -> C
+SH -> O
+BC -> H
+FN -> N
+BK -> N
+PN -> B
+PO -> O
+SC -> S
+NO -> S
+KN -> O
+VB -> C
+SF -> H
+FH -> C
+FF -> B
+VO -> S
+PH -> F
+CK -> B
+FC -> P
+VV -> F
+VH -> O
+OF -> O
+HP -> K
+CO -> V
+VS -> V
+SB -> F
+SS -> K
+CF -> O
+OK -> V
+ON -> B
+NS -> H
+SO -> B
+NV -> V
+NH -> B
+NN -> K
+KH -> H
+FV -> B
+KK -> N
+OB -> F
+NK -> F
+CC -> S
+PP -> B
+PF -> H
+HC -> P
+PV -> F
+BV -> N
+NF -> N
+HV -> S
+HH -> C
+HS -> O
+CP -> O

src/day14/day14Test.txt

@@ -0,0 +1,18 @@
+NNCB
+
+CH -> B
+HH -> N
+CB -> H
+NH -> C
+HB -> C
+HC -> B
+HN -> C
+NN -> C
+BH -> H
+NC -> B
+NB -> B
+BN -> B
+BB -> N
+BC -> B
+CC -> N
+CN -> C