day7/daySevel.go

@@ -1,151 +0,0 @@
-package day7
-
-import (
-	"fmt"
-	"log"
-	"os"
-	"slices"
-	"strconv"
-	"strings"
-)
-
-func Run() int {
-	fmt.Print("hello day 7")
-	filename := "day7/input"
-	input := ReadFile(filename)
-	slices.SortFunc(input, CompareHands)
-	// log.Printf("read the input %+v\n", input)
-	for _, hand := range input {
-		// fmt.Printf("%+v\n", hand)
-		fmt.Printf("%+s\t\t%d\n", hand.Cards, hand.HandType)
-	}
-	slices.SortFunc([]int{}, func(a int, b int) int { return 0 })
-	result := 0
-	for i, hand := range input {
-		result += (i+1) * hand.Bid
-	}
-	return result
-}
-
-type HandType int
-
-const (
-	HighCard = iota
-	OnePair
-	TwoPair
-	ThreeKind
-	FullHouse
-	FourKind
-	FiveKind
-)
-
-type Hand struct {
-	Cards    string
-	Grouped  map[rune]int
-	HandType HandType
-	Bid      int
-}
-
-// cmp(a, b) should return a negative number when a < b, a positive number when
-// a > b and zero when a == b.
-const values string = "J23456789TQKA"
-
-func CompareHands(a Hand, b Hand) int {
-	if a.HandType != b.HandType {
-		return int(a.HandType) - int(b.HandType)
-	}
-	return compareString(a.Cards, b.Cards)
-}
-
-func compareString(a string, b string) int {
-	for i := 0; i < len(a); i++ {
-		if a[i] == b[i] {
-			continue
-		}
-		aVal := strings.IndexRune(values, rune(a[i]))
-		bVal := strings.IndexRune(values, rune(b[i]))
-		return aVal - bVal
-	}
-	return 0
-}
-
-func GetHandType(groupped map[rune]int) HandType {
-	var handType HandType
-	jokerSize, found := groupped['J']
-	if !found {
-		jokerSize = 0
-	}
-	sizes := make([]int, 0, len(groupped))
-	for card, size := range groupped {
-		if card != 'J' {
-			sizes = append(sizes, size)
-		}
-	}
-	slices.SortFunc(sizes, func (a, b int) int { return b - a })
-	var highest int
-	if len(sizes) == 0 {
-		highest = jokerSize
-	} else {
-		highest = sizes[0] + jokerSize
-	}
-	if highest == 5 {
-		return FiveKind
-	}
-	if highest == 4 {
-		return FourKind
-	}
-	other := sizes[1]
-	if highest == 3 {
-		if other == 2 {
-			return FullHouse
-		}
-		return ThreeKind
-	}
-	if highest == 2 {
-		if other == 2 {
-			return TwoPair
-		}
-		return OnePair
-	}
-
-	// log.Printf("calc type for %+v.\nsizes: %+v;\n %d", groupped, sizes, handType)
-	return handType
-}
-
-func ReadFile(filename string) []Hand {
-	bytes, err := os.ReadFile(filename)
-	if err != nil {
-		panic(fmt.Sprintln("error reading file : ", filename))
-	}
-	text := string(bytes)
-	lines := strings.Split(text, "\n")
-	linesLen := len(lines)
-	result := make([]Hand, 0, linesLen)
-
-	for _, line := range lines {
-		log.Println("reading in line : ", line)
-		if line == "" {
-			continue
-		}
-		firstSplit := strings.Fields(line)
-		cards := firstSplit[0]
-		bidStr := firstSplit[1]
-		bid, err := strconv.Atoi(bidStr)
-		if err != nil {
-			panic(fmt.Sprintln("error getting bid from : ", bidStr))
-		}
-		groupped := make(map[rune]int, 0)
-		for _, card := range cards {
-			groupped[card] += 1
-		}
-		hand := Hand{
-			Cards:   cards,
-			Grouped: groupped,
-			Bid:     bid,
-			HandType: GetHandType(groupped),
-		}
-		result = append(result, hand)
-	}
-
-	return result
-}

day7/example

@@ -1,5 +0,0 @@
-32T3K 765
-T55J5 684
-KK677 28
-KTJJT 220
-QQQJA 483

main.go

@@ -3,11 +3,11 @@ package main
 import (
 	"log"
 
-	"sunshine.industries/aoc2023/day7"
+	"sunshine.industries/aoc2023/day6"
 )
 
 func main() {
 	log.Print("> starting run:")
-	result := day7.Run()
+	result := day6.Run()
-	log.Printf("day7 result: %d\n****\n", result)
+	log.Printf("day4 result: %d\n****\n", result)
 }