AoC 2020: day4

Signed-off-by: Ettore Dreucci <ettore.dreucci@gmail.com>

2018/day_05/main.go

@@ -1,56 +0,0 @@
-package main
-
-import (
-	"bufio"
-	"fmt"
-	"log"
-	"os"
-	"strings"
-)
-
-var alphabet string
-
-func react(s string) string {
-	firstS := s
-	for i := 0; i < len(alphabet); i++ {
-		letter := alphabet[i : i+1]
-		s = strings.Replace(s, letter+strings.ToUpper(letter), "", -1)
-		s = strings.Replace(s, strings.ToUpper(letter)+letter, "", -1)
-	}
-	if firstS == s {
-		return s
-	} else {
-		return react(s)
-	}
-
-}
-
-func main() {
-	var input string
-	alphabet = "abcdefghijklmnopqrstuvwxyz"
-
-	file, err := os.Open("./input")
-	if err != nil {
-		log.Fatal(err)
-	}
-	defer file.Close()
-
-	scan := bufio.NewScanner(file)
-	for scan.Scan() {
-		input = scan.Text()
-	}
-	fmt.Printf("Part One: %v\n", len(react(input)))
-
-	min := len(input)
-	for i := 0; i < len(alphabet); i++ {
-		letter := alphabet[i : i+1]
-		try := input
-		try = strings.Replace(try, letter, "", -1)
-		try = strings.Replace(try, strings.ToUpper(letter), "", -1)
-		size := len(react(try))
-		if size < min {
-			min = size
-		}
-	}
-	fmt.Printf("Part Two: %v\n", min)
-}