From 6d8fb621d1e93b83786890d6d9cb6f0d8defa8ae Mon Sep 17 00:00:00 2001
From: DJ O'Leary <dijitol@proton.me>
Date: Fri, 26 Jun 2026 18:04:09 +0200
Subject: refactor!: invert repo directory structure

now is language first
---
 2023/go/internal/day_04/part_02/part_02.go | 142 -----------------------------
 1 file changed, 142 deletions(-)
 delete mode 100644 2023/go/internal/day_04/part_02/part_02.go

(limited to '2023/go/internal/day_04/part_02/part_02.go')

diff --git a/2023/go/internal/day_04/part_02/part_02.go b/2023/go/internal/day_04/part_02/part_02.go
deleted file mode 100644
index a9e3152..0000000
--- a/2023/go/internal/day_04/part_02/part_02.go
+++ /dev/null
@@ -1,142 +0,0 @@
-package part_02
-
-import (
-	"os"
-	"slices"
-	"strconv"
-	"strings"
-)
-
-const USE_SAMPLE = false
-
-type UnparsedCard struct {
-	id             string
-	winningNumbers []string
-	haveNumbers    []string
-}
-
-type Card struct {
-	id             int
-	winningNumbers []int
-	haveNumbers    []int
-}
-
-func (c UnparsedCard) parse() Card {
-	var card Card
-
-	id, err := strconv.Atoi(c.id)
-	if err != nil {
-		panic(err)
-	}
-	card.id = id
-
-	for _, number := range c.winningNumbers {
-		num, err := strconv.Atoi(number)
-		if err != nil {
-			panic(err)
-		}
-		card.winningNumbers = append(card.winningNumbers, num)
-	}
-
-	for _, number := range c.haveNumbers {
-		num, err := strconv.Atoi(number)
-		if err != nil {
-			panic(err)
-		}
-		card.haveNumbers = append(card.haveNumbers, num)
-	}
-
-	return card
-}
-
-func Solve() {
-	var contents []byte
-	if USE_SAMPLE {
-		contents, _ = os.ReadFile("../_input/day_04_part_02_sample.txt")
-	} else {
-		contents, _ = os.ReadFile("../_input/day_04.txt")
-	}
-
-	lines := strings.Split(string(contents), "\n")
-
-	dict := map[int]Card{}
-	var cards []Card
-	for _, line := range lines {
-		if line == "" || line == "\n" {
-			continue
-		}
-
-		card := parseCardLine(line)
-
-		dict[card.id] = card
-		cards = append(cards, card)
-	}
-
-	answer := processCards(dict, cards)
-
-	println(answer)
-}
-
-// "Card 1: 41 48 83 86 17 | 83 86  6 31 17  9 48 53"
-func parseCardLine(line string) Card {
-	var unparsedCard UnparsedCard
-
-	filteredLine := strings.ReplaceAll(line, "\r", "")
-
-	// "Card 1"
-	card_parts := strings.Split(filteredLine, ":")[0]
-	id_parts := strings.Split(card_parts, " ")
-	id := id_parts[len(id_parts)-1]
-	unparsedCard.id = strings.ReplaceAll(id, " ", "")
-
-	// "41 48 83 86 17 | 83 86  6 31 17  9 48 53"
-	numbers := strings.Split(filteredLine, ":")[1]
-
-	// " 41 48 83 86 17"
-	winningNumberString := strings.Split(numbers, "|")[0]
-	// ["", "41", "48", "83", "86", "17"]
-	winningNumbers := strings.Split(winningNumberString, " ")
-	for _, num := range winningNumbers {
-		if num == "" || num == " " {
-			continue
-		}
-		unparsedCard.winningNumbers = append(unparsedCard.winningNumbers, num)
-	}
-
-	// " 83 86  6 31 17  9 48 53"
-	haveNumberString := strings.Split(numbers, "|")[1]
-	// ["", "83", "86", "", "6", "31", "17", "", "9", "48", "53"]
-	haveNumbers := strings.Split(haveNumberString, " ")
-	for _, num := range haveNumbers {
-		if num == "" || num == " " {
-			continue
-		}
-		unparsedCard.haveNumbers = append(unparsedCard.haveNumbers, num)
-	}
-
-	return unparsedCard.parse()
-}
-
-func processCards(dict map[int]Card, cards []Card) int {
-	for i := 0; i < len(cards); i++ {
-		card := cards[i]
-		matchCount := calculateNumberOfMatches(card)
-		for j := card.id + 1; j < (card.id + 1 + matchCount); j++ {
-			copyCard := dict[j]
-			cards = append(cards, copyCard)
-		}
-	}
-
-	return len(cards)
-}
-
-func calculateNumberOfMatches(card Card) int {
-	matchCount := 0
-	for _, winningNumber := range card.winningNumbers {
-		if slices.Contains(card.haveNumbers, winningNumber) {
-			matchCount++
-		}
-	}
-
-	return matchCount
-}
-- 
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