Day 2 part 1

main.go

@@ -8,4 +8,7 @@ import (
 func main() {
 	fmt.Println("Day 01 part 1:\t", solutions.Day01Part01(false))
 	fmt.Println("Day 01 part 2:\t", solutions.Day01Part02(false))
+
+	fmt.Println("Day 02 part 1:\t", solutions.Day02Part01(false))
+	fmt.Println("Day 02 part 2:\t", solutions.Day02Part02(false))
 }

solutions/day02.go

@@ -0,0 +1,60 @@
+package solutions
+
+import (
+	"strconv"
+	"strings"
+)
+
+func checkPassword(input string) bool {
+	dashPosition := strings.Index(input, "-")
+	spacePosition := strings.Index(input, " ")
+	colonPosition := strings.Index(input, ":")
+
+	amountMin, err := strconv.Atoi(input[:dashPosition])
+	if err != nil {
+		panic("Error converting to int")
+	}
+	amountMax, err := strconv.Atoi(input[dashPosition+1 : spacePosition])
+	if err != nil {
+		panic("Error converting to int")
+	}
+
+	letter := input[spacePosition+1 : colonPosition]
+	rest := input[colonPosition+2:]
+
+	charMap := make(map[string]int)
+
+	for _, char := range strings.Split(rest, "") {
+		if _, ok := charMap[char]; ok {
+			charMap[char] += 1
+		} else {
+			charMap[char] = 1
+		}
+	}
+
+	charAmount := charMap[letter]
+
+	if charAmount >= amountMin && charAmount <= amountMax {
+		return true
+	}
+
+	return false
+}
+
+func Day02Part01(isTest bool) int {
+	input := ReadInput("02", isTest)
+	values := strings.Split(input, "\n")
+	correctPasswords := 0
+
+	for _, i := range values {
+		if checkPassword(i) {
+			correctPasswords += 1
+		}
+	}
+
+	return correctPasswords
+}
+
+func Day02Part02(isTest bool) int {
+	return -1
+}