71 lines
1.3 KiB
Go
71 lines
1.3 KiB
Go
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package main
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import (
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"bufio"
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"io"
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"log"
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"os"
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"strings"
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)
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type Group struct {
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QuestionsAnsweredWithYes []rune
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Persons []string
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}
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func FromLines(lines []string) *Group {
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g := &Group{
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QuestionsAnsweredWithYes: []rune{},
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Persons: []string{},
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}
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for _, line := range lines {
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g.Persons = append(g.Persons, line)
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thisPersonsAnswer:
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for _, answer := range line {
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for _, alreadyAnswered := range g.QuestionsAnsweredWithYes {
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if alreadyAnswered == answer {
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continue thisPersonsAnswer
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}
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}
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g.QuestionsAnsweredWithYes = append(g.QuestionsAnsweredWithYes, answer)
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}
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}
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return g
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}
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func main() {
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groups := []*Group{}
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f, err := os.Open("input")
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if err != nil {
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panic(err)
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}
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r := bufio.NewReader(f)
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currentGroup := []string{}
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for {
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line, err := r.ReadString('\n')
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line = strings.TrimSpace(line)
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if err == io.EOF || len(line) <= 0 {
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if len(currentGroup) > 0 {
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groups = append(groups, FromLines(currentGroup))
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currentGroup = []string{}
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}
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if err == io.EOF {
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break
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}
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continue
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}
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if err != nil {
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panic(err)
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}
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currentGroup = append(currentGroup, line)
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}
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sum := 0
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for _, group := range groups {
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sum += len(group.QuestionsAnsweredWithYes)
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}
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log.Printf("Sum: %d", sum)
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}
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