Solution for 12.1.

2018/internal/day12/input.go

@@ -0,0 +1,42 @@
+package day12
+
+import (
+	"strings"
+)
+
+func ParseInput(data []string) (map[int]bool, []*Rule) {
+	stateStrings := strings.Split(data[0], " ")
+	state := stateStrings[len(stateStrings)-1]
+	ruleStrings := data[2:]
+
+	// Populate plant map
+	plants := make(map[int]bool)
+	for i, byte := range []byte(state) {
+		if byte == '#' {
+			plants[i] = true
+		}
+	}
+
+	// Create rules
+	rules := []*Rule{}
+	for _, ruleStr := range ruleStrings {
+		ruleData := strings.Split(ruleStr, " ")
+
+		rule := &Rule{}
+		positions := []byte(ruleData[0])
+
+		for i := 0; i < 5; i++ {
+			rule.Positions[i] = positions[i] == '#'
+		}
+
+		if ruleData[2] == "#" {
+			rule.Result = true
+		} else {
+			rule.Result = false
+		}
+
+		rules = append(rules, rule)
+	}
+
+	return plants, rules
+}