2022/go/day06/day06.go

   1 package day06
   2
   3 import (
   4         _ "fmt"
   5         "sort"
   6         "strings"
   7
   8         "github.com/mpvl/unique"
   9 )
  10
  11 func Part1(input string) int {
  12         for i:=4;i<len(input);i++ {
  13                 s := input[i-4:i]
  14                 if s[0] == s[1] || s[0] == s[2] || s[0] == s[3] || s[1] == s[2] || s[1] == s[3] || s[2] == s[3] {
  15                         continue
  16                 } else {
  17                         return i
  18                 }
  19         }
  20         return 0
  21 }
  22
  23 func Part2(input string) int {
  24         for i:=14;i<len(input);i++ {
  25                 s := input[i-14:i]
  26                 sSlice := strings.Split(s,"")
  27                 length := len(sSlice)
  28                 sort.Strings(sSlice)
  29                 unique.Strings(&sSlice)
  30                 if length == len(sSlice) {
  31                         return i
  32                 }
  33         }
  34         return 0
  35 }