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