Solve 2020/04/first

2020/4/go.mod

@@ -0,0 +1,3 @@
+module 3
+
+go 1.15

2020/4/main.go

@@ -0,0 +1,59 @@
+package main
+
+import (
+	"fmt"
+	"io/ioutil"
+	"regexp"
+	"strings"
+)
+
+func main() {
+
+	data, err := ioutil.ReadFile("input.txt")
+	if err != nil {
+		fmt.Println("File reading error", err)
+		return
+	}
+	lines := strings.Split(string(data), "\n")
+
+	fmt.Println("First result:", first(lines))
+	fmt.Println("Second result:", second(lines))
+
+}
+
+func first(lines []string) interface{} {
+	passports := make([]string, 0)
+
+	current := ""
+
+	for _, line := range lines {
+		if line == "" {
+			passports = append(passports, current)
+			current = ""
+		} else {
+			current += (line + " ")
+		}
+	}
+
+	passports = append(passports, current)
+
+	sumValid := 0
+	//  && regexp.MustCompile(`(byr&iyr&eyr:)`).MatchString(passport) && regexp.MustCompile(`(byr&iyr&eyr:)`).MatchString(passport)
+	for _, passport := range passports {
+		valid := regexp.MustCompile(`(byr:)`).MatchString(passport)
+		valid = valid && regexp.MustCompile(`(iyr:)`).MatchString(passport)
+		valid = valid && regexp.MustCompile(`(eyr:)`).MatchString(passport)
+		valid = valid && regexp.MustCompile(`(hgt:)`).MatchString(passport)
+		valid = valid && regexp.MustCompile(`(hcl:)`).MatchString(passport)
+		valid = valid && regexp.MustCompile(`(ecl:)`).MatchString(passport)
+		valid = valid && regexp.MustCompile(`(pid:)`).MatchString(passport)
+		if valid {
+			sumValid++
+		}
+	}
+	return sumValid
+}
+
+func second(lines []string) interface{} {
+	return 0
+}