From 46f1dddeb18988e94818373440741be5615074f3 Mon Sep 17 00:00:00 2001
From: Davide Oddone <davide@oddone.dev>
Date: Mon, 4 Dec 2023 13:34:48 +0000
Subject: [PATCH] First draft of working part two, heavily unoptimized

---
 day04/scratchcards.go | 68 ++++++++++++++++++++++++++++++++++---------
 1 file changed, 55 insertions(+), 13 deletions(-)

diff --git a/day04/scratchcards.go b/day04/scratchcards.go
index 4980508..fabc6c7 100644
--- a/day04/scratchcards.go
+++ b/day04/scratchcards.go
@@ -20,24 +20,47 @@ func PrintAndWait(x ...any) {
     fmt.Scanln() 
 }
 
-func CalcScore (s []string, t *int) {
+func SplitSets(s []string) ([]string, []string) {
+
     // Split the two sets into winning and my numbers
 	tempwinningNumbers := s[0]
 	tempMyNumbers := s[1]
 	// Regex to populate a string with numbers
 	renum := regexp.MustCompile("[0-9]+")
 	myNumbers := renum.FindAllString(tempMyNumbers, -1)
-	winningNumbers := renum.FindAllString(tempwinningNumbers, -1) 
+	winningNumbers := renum.FindAllString(tempwinningNumbers, -1)
 
-	matches := 0
-	for i := range myNumbers {
-    	for j := range winningNumbers {
-        	if (myNumbers[i] == winningNumbers[j]) {
+	return myNumbers, winningNumbers  
+}
+
+func FindMatches(myNum []string, winNum []string) int {
+    matches := 0 
+	for i := range myNum {
+    	for j := range winNum {
+        	if (myNum[i] == winNum[j]) {
             	matches += 1
             	continue
         	}
     	}
 	}
+	return matches
+}
+
+func CalcTickets(s []string, index int, tpr []int ) {
+    
+	myNumbers, winningNumbers := SplitSets(s)
+	matches := FindMatches(myNumbers, winningNumbers)
+	if (matches > 0) {
+    	for i := index; i < index + matches; i++ {
+        	tpr[i+1] += 1
+    	}
+	}
+}
+
+func CalcScore (s []string, t *int) {
+
+	myNumbers, winningNumbers := SplitSets(s) 
+	matches := FindMatches(myNumbers, winningNumbers)
 	if(matches > 0) {
     	tempTotal := 1
     	for i := 0; i < matches - 1; i++ {
@@ -45,7 +68,6 @@ func CalcScore (s []string, t *int) {
     	}
     	*t += tempTotal
 	}
-
 }
 
 func main() {
@@ -53,20 +75,40 @@ func main() {
 	check(err)
 	defer file.Close()
 
+	// The total is a simple sum 
 	var total int = 0
 	var totalPoint *int = &total
-
+	// To keep track of the amount of tickets, an array as long
+	// as the number of lines
+	var lines []string
 	scanner := bufio.NewScanner(file)
-
-	// Scan every line
 	for scanner.Scan() {
+    	lines = append(lines, scanner.Text())
+	}
+	ticketsPerRow := make([]int, len(lines))
+	tprPoint := ticketsPerRow[0:len(lines)]
+
+	for i := range ticketsPerRow {
+    	ticketsPerRow[i] = 1
+	}
+	
+	// Scan every line
+	for i := 0; i < len(lines); i++ {
     	// e.g.: Card 1: 41 48 83 86 17 | 83 86  6 31 17  9 48 53
-    	line := scanner.Text()
-    	cardAndNumbers := strings.Split(line, ":")
+    	cardAndNumbers := strings.Split(lines[i], ":")
     	// At this point, cardAndNumbers has "Card N"
     	// We don't need this information (yet?)
     	allNumbers := strings.Split(cardAndNumbers[1], "|")
     	CalcScore(allNumbers, totalPoint)
+    	for j := 0; j < ticketsPerRow[i]; j++ {
+        	CalcTickets(allNumbers, i, tprPoint)
+    	}
 	}
-	fmt.Printf("The scratchcards are worth %d points.", total)
+
+	numTickets := 0
+	for i := range ticketsPerRow {
+    	numTickets += ticketsPerRow[i] 
+	}
+	fmt.Printf("The scratchcards are worth %d points.\n", total)
+	fmt.Printf("In total, I have %d scratchcards.", numTickets)
 }