refactor: massive refactor to have only one binary to call

internal/2020/DaySix/code.go

@@ -0,0 +1,70 @@
+package daysix
+
+import (
+	"advent-of-code/internal/registry"
+	"os"
+	"strings"
+)
+
+func init() {
+	registry.Register("2020D6", ParseInput, PartOne, PartTwo)
+}
+
+func ParseInput(filepath string) []string {
+	content, _ := os.ReadFile(filepath)
+	return strings.Split(strings.TrimSpace(string(content)), "\n")
+}
+
+func PartOne(input []string) int {
+	total := 0
+	groupAnswers := make(map[rune]bool)
+
+	for idx, line := range input {
+		if line != "" {
+			for _, char := range line {
+				if char >= 'a' && char <= 'z' {
+					groupAnswers[char] = true
+				}
+			}
+		}
+
+		if line == "" || idx == len(input)-1 {
+			total += len(groupAnswers)
+			groupAnswers = make(map[rune]bool)
+		}
+	}
+
+	total += len(groupAnswers)
+
+	return total
+}
+
+func PartTwo(input []string) int {
+	total := 0
+	groupAnswers := make(map[rune]int)
+	groupSize := 0
+
+	for idx, line := range input {
+		if line != "" {
+			groupSize++
+			for _, char := range line {
+				if char >= 'a' && char <= 'z' {
+					groupAnswers[char]++
+				}
+			}
+		}
+
+		if line == "" || idx == len(input)-1 {
+			for _, count := range groupAnswers {
+				if count == groupSize {
+					total++
+				}
+			}
+			groupAnswers = make(map[rune]int)
+			groupSize = 0
+		}
+	}
+
+	return total
+}
+