2023 Days 4 and 6

2023/04/part2/main.go

@@ -0,0 +1,70 @@
+
+package main
+
+import (
+	"bufio"
+	"os"
+	"strings"
+	"fmt"
+)
+
+func main() {
+	reader := bufio.NewReader(os.Stdin);
+
+	total := 0;
+
+	multipliers := []int{};
+
+	for text, err := reader.ReadString('\n'); err == nil; text, err = reader.ReadString('\n') {
+		text = strings.Trim(text, "\n")
+		points := score(text);
+
+		fmt.Printf("%v: %v\n", text, points);
+
+		newMultipliers := []int{};
+		for i := range multipliers {
+			if multipliers[i] > 0 {
+				newMultipliers = append(newMultipliers, multipliers[i]-1)
+			}
+		}
+
+		multipliers = newMultipliers;
+		multiplier := len(multipliers) + 1;
+		
+		for i := 0; i < multiplier; i++ {
+			multipliers = append(multipliers, points);
+		}
+
+		total += multiplier;
+		fmt.Printf("+%v = %v\n", multiplier, total);
+	}
+
+	fmt.Printf("total cards: %v", total);
+
+}
+
+func score(text string) (amt int) {
+	gameStr := strings.ReplaceAll(strings.Split(text, ": ")[1], "  ", " ");
+
+	nums := strings.Split(gameStr," | ");
+
+	winners := strings.Split(nums[0]," ");
+	draw := strings.Split(nums[1]," ");
+
+	for _, n := range draw {
+		match := false;
+		for _, w := range winners {
+			match = n == w;
+			if match {
+				break;
+			}
+		}
+		if match {
+			amt++;
+		}
+	}
+
+	return
+}
+
+