85 lines
1.9 KiB
Go
85 lines
1.9 KiB
Go
package main
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import (
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"bufio"
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"github.com/emirpasic/gods/sets/hashset"
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"os"
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"path/filepath"
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)
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var (
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f = "../../3.input.txt"
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// why go why is an element in a string int32, but uint8 in a interface{}
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p = map[int32]int{}
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)
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func must(e error) {
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if e != nil {
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panic(e)
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}
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}
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func main() {
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fp, err := filepath.Abs(f)
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must(err)
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rf, err := os.Open(fp)
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must(err)
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s := bufio.NewScanner(rf)
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s.Split(bufio.ScanLines)
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for i, c := range "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ" {
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p[c] = i + 1
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}
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pScore := 0
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for s.Scan() {
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line := s.Text()
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half := len(line)/2
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c1, c2 := line[:half], line[half:]
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s1, s2 := hashset.New(), hashset.New()
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for i := 0; i < len(c1); i++ {
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s1.Add(c1[i])
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s2.Add(c2[i])
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}
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shared := s1.Intersection(s2).Values()[0].(byte) // I am cancer (the interface{} thats uint8)
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// println(string(shared))
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s := int32(shared)
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pScore = pScore + p[s]
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}
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println("parts score:", pScore)
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rf.Close()
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rf, err = os.Open(fp)
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must(err)
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s = bufio.NewScanner(rf)
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commonScore := 0
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for s.Scan() {
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lines3 := [3]string{}
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var s3 [3]*hashset.Set
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lines3[0] = s.Text()
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s.Scan()
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lines3[1] = s.Text()
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s.Scan()
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lines3[2] = s.Text()
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for i := 0; i < 3; i++ {
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s3[i] = hashset.New()
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}
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for i := 0; i < 3; i++ {
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for _, c := range lines3[i] {
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s3[i].Add(c)
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}
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}
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common := s3[0].Intersection(s3[1].Intersection(s3[2])).Values()[0].(int32) // AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
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// println(string(common))
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// c := int32(common)
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commonScore = commonScore + p[common]
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}
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println("common score among 3:", commonScore)
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} |