Day 5 part 1

main.go

@@ -18,6 +18,9 @@ func main() {
 
 	runAndBenchmark("04", "1", false, solutions.Day04Part01)
 	runAndBenchmark("04", "2", false, solutions.Day04Part02)
+
+	runAndBenchmark("05", "1", false, solutions.Day05Part01)
+	runAndBenchmark("05", "2", true, solutions.Day05Part02)
 }
 
 type execute func(bool) int

solutions/day05.go

@@ -0,0 +1,40 @@
+package solutions
+
+import (
+	"regexp"
+	"strconv"
+	"strings"
+)
+
+func seatToValue(seat string) (int, int, int) {
+	lowRegex := regexp.MustCompile("[FL]")
+	highRegex := regexp.MustCompile("[BR]")
+
+	seatStr := lowRegex.ReplaceAllString(seat, "0")
+	seatStr = highRegex.ReplaceAllString(seatStr, "1")
+
+	row, _ := strconv.ParseInt(seatStr[:7], 2, 64)
+	column, _ := strconv.ParseInt(seatStr[7:], 2, 64)
+
+	return int(row), int(column), int(row*8 + column)
+}
+
+func Day05Part01(isTest bool) int {
+	input := ReadInput("05", isTest)
+	seats := strings.Split(input, "\n")
+
+	highestSeatId := 0
+
+	for _, seat := range seats {
+		_, _, seatId := seatToValue(seat)
+		if seatId > highestSeatId {
+			highestSeatId = seatId
+		}
+	}
+
+	return highestSeatId
+}
+
+func Day05Part02(isTest bool) int {
+	return -1
+}