155 lines
3.1 KiB
Go
155 lines
3.1 KiB
Go
package solutions
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import (
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"regexp"
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"strconv"
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"strings"
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)
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func Day04Part01(isTest bool) int {
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input := ReadInput("04", isTest)
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passports := strings.Split(input, "\n\n")
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regex, _ := regexp.Compile("(\\w+:[\\w#]+)")
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correctAmount := 0
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for _, passport := range passports {
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matches := regex.FindAllString(passport, -1)
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values := make(map[string]string)
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for _, match := range matches {
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colonPosition := strings.Index(match, ":")
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key := match[:colonPosition]
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value := match[colonPosition+1:]
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values[key] = value
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}
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_, cidPresent := values["cid"]
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keysAmount := len(values)
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if keysAmount == 8 || (keysAmount == 7 && !cidPresent) {
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correctAmount += 1
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}
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}
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return correctAmount
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}
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func Day04Part02(isTest bool) int {
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input := ReadInput("04", isTest)
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passports := strings.Split(input, "\n\n")
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regex, _ := regexp.Compile("[\\n\\s]")
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correctAmount := 0
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for _, passport := range passports {
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matches := regex.Split(passport, -1)
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// s := "hgt:59cm ecl:zzz\neyr:2038 hcl:74454a iyr:2023\npid:3556412378 byr:2007"
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// matches = regex.FindAllString(s, -1)
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values := make(map[string]string)
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for _, match := range matches {
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colonPosition := strings.Index(match, ":")
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key := match[:colonPosition]
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value := match[colonPosition+1:]
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values[key] = value
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}
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if !validateByr(values) || !validateIyr(values) || !validateEyr(values) ||
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!validateHgt(values) || !validateHcl(values) || !validateEcl(values) ||
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!validatePid(values) {
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continue
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}
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correctAmount += 1
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}
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return correctAmount
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}
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func validateYear(year string, min, max int) bool {
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yearNumber, err := strconv.Atoi(year)
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if err != nil {
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return false
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}
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return min <= yearNumber && yearNumber <= max
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}
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func validateByr(values map[string]string) bool {
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byr, _ := values["byr"]
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return validateYear(byr, 1920, 2002)
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}
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func validateIyr(values map[string]string) bool {
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byr, _ := values["iyr"]
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return validateYear(byr, 2010, 2020)
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}
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func validateEyr(values map[string]string) bool {
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byr, _ := values["eyr"]
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return validateYear(byr, 2020, 2030)
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}
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func validateHgt(values map[string]string) bool {
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height, ok := values["hgt"]
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if !ok {
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return false
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}
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cmIdx := strings.Index(height, "cm")
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if cmIdx != -1 {
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cm, err := strconv.Atoi(height[:cmIdx])
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if err != nil {
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return false
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}
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return 150 <= cm && cm <= 193
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}
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inIdx := strings.Index(height, "in")
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if inIdx != -1 {
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in, err := strconv.Atoi(height[:inIdx])
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if err != nil {
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return false
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}
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return 59 <= in && in <= 76
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}
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return false
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}
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func validateHcl(values map[string]string) bool {
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hairColor, ok := values["hcl"]
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if !ok {
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return false
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}
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matched, _ := regexp.MatchString("#[a-f0-9]{6}", hairColor)
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return matched
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}
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func validateEcl(values map[string]string) bool {
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eyeColor, ok := values["ecl"]
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if !ok {
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return false
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}
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return eyeColor == "amb" || eyeColor == "blu" || eyeColor == "brn" ||
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eyeColor == "gry" || eyeColor == "grn" || eyeColor == "hzl" || eyeColor == "oth"
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}
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func validatePid(values map[string]string) bool {
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passportId, ok := values["pid"]
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if !ok {
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return false
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}
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matched, _ := regexp.MatchString("\\d{9}", passportId)
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return matched
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}
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