75 lines
1.4 KiB
Go
75 lines
1.4 KiB
Go
package main
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import (
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"bytes"
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"fmt"
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h "git.bullercodeworks.com/brian/adventofcode/helpers"
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)
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func main() {
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fmt.Println("# Day 6")
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inp := h.StdinToStringSlice()
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part2(inp)
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}
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func part1(inp []string) {
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yeses := make(map[byte]bool)
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var total int
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for _, v := range inp {
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if v == "" {
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fmt.Printf("Group Total: %d\n", len(yeses))
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total = total + len(yeses)
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yeses = make(map[byte]bool)
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} else {
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for _, i := range v {
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yeses[byte(i)] = true
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}
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}
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}
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fmt.Printf("Group Total: %d\n", len(yeses))
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total = total + len(yeses)
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fmt.Printf("Answer: %d\n", total)
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}
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func part2(inp []string) {
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var total int
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yeses := []byte{}
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newgroup := true
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for _, v := range inp {
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if v == "" {
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newgroup = true
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var grouptotal int
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for yk := range yeses {
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if yeses[yk] != ' ' {
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grouptotal++
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}
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}
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total = total + grouptotal
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fmt.Printf("Totals: %d -> %d\n", grouptotal, total)
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} else {
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if newgroup {
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newgroup = false
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yeses = []byte(v)
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fmt.Println("Initializing", string(yeses))
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} else {
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for yk, yv := range yeses {
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if !bytes.Contains([]byte(v), []byte{yv}) {
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yeses[yk] = ' '
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fmt.Println("Removing", string(yv), "->", string(yeses))
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}
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}
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}
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}
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}
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var grouptotal int
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for yk := range yeses {
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if yeses[yk] != ' ' {
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grouptotal++
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}
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}
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total = total + grouptotal
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fmt.Printf("Totals: %d -> %d\n", grouptotal, total)
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fmt.Printf("Answer: %d\n", total)
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}
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