64 lines
1.1 KiB
Go
64 lines
1.1 KiB
Go
package solutions
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import (
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"regexp"
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"slices"
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"strconv"
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"strings"
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)
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func seatStrToSeatId(seat string) int {
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lowRegex := regexp.MustCompile("[FL]")
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highRegex := regexp.MustCompile("[BR]")
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seatStr := lowRegex.ReplaceAllString(seat, "0")
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seatStr = highRegex.ReplaceAllString(seatStr, "1")
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row, _ := strconv.ParseInt(seatStr[:7], 2, 64)
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column, _ := strconv.ParseInt(seatStr[7:], 2, 64)
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return int(row*8 + column)
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}
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func Day05Part01(isTest bool) int {
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input := ReadInput("05", isTest)
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seats := strings.Split(input, "\n")
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highestSeatId := 0
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for _, seat := range seats {
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seatId := seatStrToSeatId(seat)
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if seatId > highestSeatId {
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highestSeatId = seatId
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}
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}
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return highestSeatId
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}
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func Day05Part02(isTest bool) int {
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input := ReadInput("05", isTest)
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seats := strings.Split(input, "\n")
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seatsAmount := len(seats)
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seatIds := make([]int, seatsAmount)
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for i, seat := range seats {
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seatId := seatStrToSeatId(seat)
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seatIds[i] = seatId
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}
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slices.Sort(seatIds)
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for i := 0; i < seatsAmount-1; i++ {
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el1 := seatIds[i]
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el2 := seatIds[i+1]
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if el2-el1 == 2 {
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return el1 + 1
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}
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}
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return -1
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}
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