From: Alan R Evans <alan@kageds.com>
Date: Fri, 1 Dec 2023 09:12:24 +0000 (+0000)
Subject: day02
X-Git-Url: https://fbox.kageds.com/gitweb/adventofcode.git/commitdiff_plain/e7cd9346f2c4f1a09f061cb218cacc36e372008c?ds=inline

day02
---

diff --git a/2023/go/day01/day01.go b/2023/go/day01/day01.go
index a9a351e..14365b8 100644
--- a/2023/go/day01/day01.go
+++ b/2023/go/day01/day01.go
@@ -23,7 +23,6 @@ func Part1(input string) int {
 		}
 	}
 	return num
-
 }
 
 
diff --git a/2023/go/day02/day02.go b/2023/go/day02/day02.go
new file mode 100644
index 0000000..4e25ea4
--- /dev/null
+++ b/2023/go/day02/day02.go
@@ -0,0 +1,119 @@
+package day02
+
+import (
+	"fmt"
+	"regexp"
+	_ "strconv"
+	"strings"
+
+	"adventofcode2023/utils"
+)
+
+type Set struct {
+	Red   int
+	Blue  int
+	Green int
+}
+
+type Game struct {
+	ID    int
+	Sets []Set
+}
+
+func Part1(input string) int {
+	sum := 0
+	games := []Game{}
+
+	lines := strings.Split(input, "\n")
+	for _, line := range lines {
+		game, err := parseGame(line)
+		if err != nil {
+			fmt.Println("Error:", err)
+			return -1
+		}
+		// Print the parsed Game struct
+		fmt.Printf("Parsed Game: %+v\n", game)
+		games = append(games, game)
+	}
+	for _, game := range games {
+		result := true
+		for _, set := range game.Sets {
+			if set.Red > 12 || set.Green > 13 || set.Blue > 14 {
+				result = false
+			}
+		}
+		if result == true {
+			sum += game.ID
+		}
+	}
+	return sum
+}
+
+func Part2(input string) int {
+	sum := 0
+	games := []Game{}
+
+	lines := strings.Split(input, "\n")
+	for _, line := range lines {
+		game, err := parseGame(line)
+		if err != nil {
+			fmt.Println("Error:", err)
+			return -1
+		}
+		// Print the parsed Game struct
+		fmt.Printf("Parsed Game: %+v\n", game)
+		games = append(games, game)
+	}
+	for _, game := range games {
+		maxRed := 0
+		maxBlue := 0
+		maxGreen := 0
+		for _, set := range game.Sets {
+			if set.Red > maxRed {
+				maxRed = set.Red
+			}
+			if set.Blue > maxBlue {
+				maxBlue = set.Blue
+			}
+			if set.Green > maxGreen {
+				maxGreen = set.Green
+			}		
+		}
+		sum +=  maxRed * maxBlue * maxGreen
+	}
+	return sum
+}
+
+func parseGame(input string) (Game, error) {
+	var game Game
+
+	// Extract ID
+	reID := regexp.MustCompile(`Game (\d+):(.*)`)
+	matchID := reID.FindStringSubmatch(input)
+	if len(matchID) != 3 {
+		return game, fmt.Errorf("unable to extract game ID")
+	}
+	game.ID = utils.MustAtoi(matchID[1])
+	setsString := strings.Split(matchID[2], ";")
+	for _, setString := range setsString {
+		var set Set
+		// Extract colors and quantities
+		reColors := regexp.MustCompile(`(\d+) (\w+)`)
+		matches := reColors.FindAllStringSubmatch(setString, -1)
+		for _, match := range matches {
+			color := strings.ToLower(match[2])
+			switch color {
+			case "red":
+				set.Red = utils.MustAtoi(match[1])
+			case "blue":
+				set.Blue = utils.MustAtoi(match[1])
+			case "green":
+				set.Green = utils.MustAtoi(match[1])
+			default:
+				return game, fmt.Errorf("unknown color: %s", color)
+			}
+		}
+		game.Sets = append(game.Sets, set)
+	}
+	return game, nil
+}
\ No newline at end of file
diff --git a/2023/go/day02/day02_test.go b/2023/go/day02/day02_test.go
new file mode 100644
index 0000000..50f9184
--- /dev/null
+++ b/2023/go/day02/day02_test.go
@@ -0,0 +1,27 @@
+package day02
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/require"
+)
+
+func TestPart1(t *testing.T) {
+	r := Part1(
+`Game 1: 3 blue, 4 red; 1 red, 2 green, 6 blue; 2 green
+Game 2: 1 blue, 2 green; 3 green, 4 blue, 1 red; 1 green, 1 blue
+Game 3: 8 green, 6 blue, 20 red; 5 blue, 4 red, 13 green; 5 green, 1 red
+Game 4: 1 green, 3 red, 6 blue; 3 green, 6 red; 3 green, 15 blue, 14 red
+Game 5: 6 red, 1 blue, 3 green; 2 blue, 1 red, 2 green`)
+	require.Equal(t, 8, r)
+}
+
+func TestPart2(t *testing.T) {
+	r := Part2(
+		`Game 1: 3 blue, 4 red; 1 red, 2 green, 6 blue; 2 green
+		Game 2: 1 blue, 2 green; 3 green, 4 blue, 1 red; 1 green, 1 blue
+		Game 3: 8 green, 6 blue, 20 red; 5 blue, 4 red, 13 green; 5 green, 1 red
+		Game 4: 1 green, 3 red, 6 blue; 3 green, 6 red; 3 green, 15 blue, 14 red
+		Game 5: 6 red, 1 blue, 3 green; 2 blue, 1 red, 2 green`)
+	require.Equal(t, 2286, r)
+}
diff --git a/2023/go/day02/input.txt b/2023/go/day02/input.txt
new file mode 100644
index 0000000..4c6ddeb
--- /dev/null
+++ b/2023/go/day02/input.txt
@@ -0,0 +1,100 @@
+Game 1: 7 red, 8 blue; 6 blue, 6 red, 2 green; 2 red, 6 green, 8 blue; 9 green, 2 red, 4 blue; 6 blue, 4 green
+Game 2: 2 green, 8 blue, 9 red; 5 blue, 11 red; 5 blue, 3 green, 4 red; 7 blue, 8 red; 5 red, 3 green, 3 blue; 1 red, 5 blue, 2 green
+Game 3: 4 red, 8 green, 2 blue; 6 green, 2 red, 2 blue; 12 red, 12 green, 2 blue; 10 green, 6 red
+Game 4: 12 red, 3 green; 1 green, 2 blue, 2 red; 16 red, 4 green; 14 red, 3 green; 2 blue, 5 red; 11 red, 4 green
+Game 5: 19 red, 1 green; 7 red, 1 green, 1 blue; 7 red; 13 red, 2 green
+Game 6: 8 green, 2 blue, 2 red; 1 red, 7 green; 6 green, 8 blue, 3 red; 14 green, 2 red, 9 blue; 13 green; 10 blue, 2 red, 4 green
+Game 7: 2 red, 7 green; 9 red, 5 blue, 18 green; 16 blue, 10 green, 6 red; 13 blue, 12 green, 6 red; 19 blue, 12 red, 11 green
+Game 8: 5 blue, 3 red, 1 green; 8 red, 1 blue, 3 green; 8 green, 9 blue, 8 red; 5 blue, 11 green, 3 red; 2 red, 3 blue, 1 green; 3 green, 7 red
+Game 9: 3 red, 3 blue; 7 green, 9 blue, 14 red; 12 blue, 9 green, 3 red
+Game 10: 6 blue, 1 green, 1 red; 17 red, 8 blue, 1 green; 4 blue, 10 red
+Game 11: 2 green, 1 blue, 8 red; 14 red, 5 blue, 10 green; 14 blue, 6 red, 9 green; 7 red, 1 blue, 1 green
+Game 12: 16 green, 1 blue; 1 green, 4 blue; 1 red, 2 blue, 16 green; 17 green, 3 blue; 14 green, 4 blue, 3 red; 7 green, 8 blue
+Game 13: 13 red, 10 blue, 19 green; 2 blue, 12 red, 8 green; 8 blue, 11 red, 13 green
+Game 14: 16 red, 7 blue, 7 green; 8 green, 10 red, 6 blue; 6 blue, 11 red, 4 green
+Game 15: 6 red, 10 blue, 2 green; 10 red, 1 blue, 1 green; 5 blue, 3 red, 2 green; 16 blue, 10 red, 2 green; 13 blue
+Game 16: 8 green, 10 red, 1 blue; 6 red, 9 green, 12 blue; 7 blue, 3 green, 1 red; 5 red, 6 blue, 3 green; 1 blue, 6 green, 8 red; 6 green, 8 red
+Game 17: 4 green, 4 blue; 2 green, 2 red; 1 red, 8 green, 7 blue
+Game 18: 6 blue, 8 green, 9 red; 4 green, 3 blue, 8 red; 8 blue, 12 red, 2 green; 4 blue, 8 red, 2 green
+Game 19: 12 blue, 3 green; 2 blue, 2 green, 4 red; 3 green, 6 red, 14 blue; 3 green, 1 red, 17 blue; 10 green, 10 red, 1 blue; 8 green, 8 blue, 4 red
+Game 20: 4 green, 3 blue, 1 red; 9 red, 14 blue, 9 green; 1 blue, 17 red, 2 green; 8 red, 13 blue, 8 green; 7 red, 2 green, 20 blue; 6 green, 13 red, 5 blue
+Game 21: 7 red, 1 blue; 1 blue, 5 red, 4 green; 5 green, 5 red; 7 red, 2 green; 4 green, 2 red, 1 blue
+Game 22: 6 red, 8 green, 18 blue; 2 green, 7 blue, 2 red; 18 blue, 8 green, 1 red; 10 red, 7 green, 20 blue; 5 blue, 10 green, 4 red
+Game 23: 2 green, 2 red, 15 blue; 2 red, 6 green, 4 blue; 8 red, 5 green
+Game 24: 9 blue, 7 green; 3 green, 9 blue, 1 red; 2 red, 6 blue; 3 green, 11 blue, 4 red
+Game 25: 2 green, 3 red, 5 blue; 2 red, 5 green; 3 red, 2 blue, 5 green; 1 blue, 4 green, 3 red
+Game 26: 1 green, 7 red; 6 green, 2 blue, 7 red; 11 green, 3 blue, 1 red; 6 red, 5 blue; 1 blue, 5 green; 8 green
+Game 27: 2 green, 10 red, 3 blue; 5 red, 5 green; 2 green, 4 blue, 10 red; 4 red, 1 blue; 3 green, 3 blue, 2 red; 8 blue, 2 green
+Game 28: 9 red, 7 blue; 6 blue, 11 red; 10 red, 10 blue, 3 green
+Game 29: 15 blue, 10 green, 1 red; 1 blue, 10 green; 2 red, 19 green, 14 blue; 4 blue, 18 green, 7 red; 8 blue, 10 green, 5 red
+Game 30: 7 blue, 3 green, 2 red; 12 blue, 5 green; 1 red, 5 green, 5 blue
+Game 31: 6 green, 5 red; 7 red, 7 green, 5 blue; 2 red, 7 blue, 7 green; 2 red, 8 blue, 7 green
+Game 32: 9 red, 2 green, 2 blue; 3 blue, 7 green, 3 red; 2 blue, 1 red
+Game 33: 13 blue, 7 red, 1 green; 5 red, 17 blue, 1 green; 2 green, 14 red, 19 blue; 2 blue, 1 red; 13 blue, 8 red; 3 blue, 15 red
+Game 34: 3 blue, 4 red, 1 green; 7 green, 2 blue; 17 green, 1 red; 7 green, 3 blue; 2 red, 1 green; 2 blue, 1 green, 2 red
+Game 35: 5 red, 2 green, 4 blue; 5 blue; 2 blue, 4 green, 4 red; 8 green, 1 blue, 5 red; 3 green, 3 blue, 5 red
+Game 36: 4 blue, 4 red, 4 green; 8 red, 8 blue, 4 green; 3 green, 9 red, 5 blue; 1 red, 4 green, 13 blue; 7 blue, 9 green, 9 red; 13 blue, 8 red
+Game 37: 6 green, 10 red, 5 blue; 5 red, 9 green, 2 blue; 4 red, 4 blue, 1 green; 12 green, 3 red, 2 blue; 4 red, 11 green, 1 blue
+Game 38: 3 red; 1 blue, 3 red; 2 red, 2 green; 2 blue, 3 green; 4 green, 2 blue, 2 red; 3 red, 2 blue
+Game 39: 6 red, 4 blue, 9 green; 17 blue, 2 green, 3 red; 5 red, 15 green, 12 blue; 3 red, 5 green, 8 blue
+Game 40: 20 red, 10 blue, 8 green; 7 red, 3 green, 10 blue; 14 green, 8 blue, 14 red; 4 red, 9 blue, 8 green; 11 red, 4 blue, 8 green
+Game 41: 2 blue; 4 red, 2 blue, 2 green; 5 green, 9 red, 3 blue; 8 red, 4 green
+Game 42: 3 red, 13 blue; 2 blue, 1 green; 6 green, 16 blue, 10 red
+Game 43: 9 red, 1 green; 1 green, 7 blue, 8 red; 8 blue, 2 green, 5 red
+Game 44: 15 blue, 5 green; 5 green, 1 red, 6 blue; 1 red, 4 blue
+Game 45: 3 green; 2 blue, 1 green; 4 green, 4 blue; 1 red, 5 blue, 11 green
+Game 46: 20 green, 10 blue, 10 red; 4 red, 13 green, 1 blue; 2 red, 2 green, 10 blue
+Game 47: 5 blue, 2 red, 3 green; 5 blue, 2 red, 1 green; 2 green, 3 red, 5 blue; 1 red, 4 green, 4 blue; 2 blue
+Game 48: 2 red, 10 blue, 1 green; 6 blue, 6 green, 6 red; 11 blue, 7 red, 5 green; 1 red, 6 green, 14 blue; 1 green, 9 blue, 3 red
+Game 49: 3 blue, 16 green, 6 red; 14 red, 3 green, 5 blue; 12 green, 6 red, 4 blue; 4 red, 6 blue, 15 green; 6 green, 11 blue, 9 red
+Game 50: 1 green, 7 red, 2 blue; 3 green, 2 blue, 5 red; 4 red, 2 blue, 4 green
+Game 51: 3 green, 7 red; 2 red, 4 green, 2 blue; 10 green, 3 blue, 6 red; 1 blue, 11 green; 1 green, 3 blue; 2 blue, 7 green
+Game 52: 2 green, 1 blue, 2 red; 7 red, 3 green; 2 blue, 8 green; 1 blue, 13 green, 6 red
+Game 53: 7 red, 2 green; 1 blue, 16 red, 7 green; 12 red, 7 green; 1 blue, 11 red, 5 green
+Game 54: 1 green, 1 blue, 16 red; 4 blue, 1 green, 6 red; 4 red, 1 blue, 3 green; 1 green, 4 red, 4 blue; 1 red, 2 green
+Game 55: 2 blue, 2 green, 5 red; 1 blue, 4 red, 5 green; 2 blue, 2 green, 6 red; 2 blue, 5 red, 6 green; 6 green, 1 red
+Game 56: 3 red, 14 green, 14 blue; 7 green, 14 red, 13 blue; 12 red, 13 blue, 6 green
+Game 57: 6 red, 11 green, 5 blue; 6 blue, 2 green, 4 red; 4 red, 6 green; 4 green, 1 red, 2 blue; 1 green, 5 blue
+Game 58: 8 red, 6 green, 10 blue; 8 blue, 9 red; 1 red, 12 blue, 1 green; 5 green, 3 blue, 8 red; 9 blue, 2 green, 4 red
+Game 59: 11 green, 1 red; 5 red, 10 blue, 12 green; 6 red, 6 blue, 2 green; 1 blue, 10 green, 4 red; 8 green, 11 blue; 6 blue, 1 red, 11 green
+Game 60: 16 green, 14 red, 1 blue; 2 blue, 8 green; 14 green; 1 green, 11 red, 2 blue; 1 blue, 11 green
+Game 61: 11 blue, 3 green, 1 red; 9 red, 18 green; 7 red, 15 green, 5 blue; 19 blue, 2 green
+Game 62: 2 green, 2 blue; 1 green, 3 red; 1 blue, 4 red, 8 green; 2 blue, 11 green; 5 red, 9 green; 7 green, 1 blue, 8 red
+Game 63: 14 blue, 6 red, 5 green; 3 blue, 10 red; 8 blue, 1 green, 8 red; 9 blue, 14 red, 4 green
+Game 64: 8 blue, 3 green, 1 red; 1 green, 13 blue; 4 green, 15 blue, 1 red; 9 blue, 3 green
+Game 65: 5 red, 5 green, 3 blue; 7 red, 2 blue, 1 green; 2 blue, 7 red, 2 green; 6 green, 12 red, 2 blue
+Game 66: 9 blue, 1 green, 1 red; 8 blue, 2 red, 2 green; 1 red, 1 green; 2 green, 1 red, 5 blue; 14 blue, 2 red; 2 red, 13 blue, 2 green
+Game 67: 7 green, 2 blue, 3 red; 16 red, 15 blue, 4 green; 6 green, 3 blue, 1 red; 1 red, 5 green, 9 blue
+Game 68: 11 blue, 4 red; 6 red, 1 blue; 1 green, 8 red, 11 blue; 10 blue, 7 red; 7 blue, 2 red; 9 blue, 1 green, 11 red
+Game 69: 9 red, 8 green, 6 blue; 2 blue, 3 red; 4 green, 9 blue, 9 red; 3 blue, 5 green, 5 red; 1 green, 7 red, 5 blue; 1 blue, 3 green, 9 red
+Game 70: 5 blue, 1 green, 3 red; 1 red, 5 green, 3 blue; 4 green, 3 blue; 2 green, 8 blue; 10 blue, 12 green
+Game 71: 1 green, 5 blue, 14 red; 6 red, 2 green, 5 blue; 7 blue, 5 green, 2 red; 2 green, 2 red, 1 blue; 6 red, 5 green; 6 red
+Game 72: 12 red, 6 green; 11 red, 2 green; 3 green, 1 red; 14 red, 5 green, 1 blue
+Game 73: 3 green, 3 red; 4 green, 4 red, 5 blue; 2 red, 5 blue, 2 green; 4 green, 8 red, 6 blue
+Game 74: 12 red, 1 blue; 3 blue, 17 red, 1 green; 5 red, 1 blue
+Game 75: 14 green, 1 red; 3 green, 5 red, 16 blue; 10 blue, 20 green, 5 red
+Game 76: 4 green, 9 blue, 12 red; 4 blue, 6 red, 3 green; 10 red, 8 green, 1 blue; 9 red, 6 green, 1 blue; 8 blue, 1 green, 6 red; 8 blue, 3 red
+Game 77: 7 red, 12 blue, 10 green; 12 green; 8 red, 8 blue, 4 green; 11 green, 9 red, 9 blue
+Game 78: 9 green, 14 blue, 16 red; 7 blue, 8 green, 1 red; 5 green, 13 red, 7 blue; 9 green, 6 red
+Game 79: 2 red, 3 blue, 8 green; 1 green; 1 blue, 2 green, 1 red; 1 green; 4 blue, 2 green, 1 red
+Game 80: 8 red, 3 blue, 10 green; 12 red; 13 red, 4 green, 6 blue; 2 red, 14 blue, 9 green; 13 blue, 1 red, 5 green; 13 blue, 9 red, 2 green
+Game 81: 2 green, 4 blue, 9 red; 1 red, 6 blue, 14 green; 4 green, 1 blue, 5 red; 3 blue, 8 red, 9 green; 6 blue, 5 green, 11 red
+Game 82: 6 blue, 6 red, 13 green; 5 blue, 4 green, 7 red; 1 green, 1 blue, 2 red
+Game 83: 2 red, 8 green; 7 red, 7 green; 11 red, 6 green; 14 red, 2 green, 2 blue; 2 green, 1 blue; 8 green, 11 red, 2 blue
+Game 84: 3 blue, 4 green, 9 red; 7 blue, 13 green, 17 red; 14 blue, 16 green, 14 red; 7 blue, 16 green, 3 red; 9 red, 2 blue, 14 green; 13 blue, 3 green, 7 red
+Game 85: 1 green, 6 red, 2 blue; 1 blue, 8 green, 5 red; 11 green, 1 red
+Game 86: 2 green, 6 blue, 2 red; 4 green, 3 blue, 3 red; 3 blue, 5 green, 8 red; 1 red; 9 red, 4 blue, 2 green; 4 green, 8 blue, 9 red
+Game 87: 1 red, 3 blue, 2 green; 14 red, 8 blue, 2 green; 9 blue, 13 red, 5 green; 5 green, 2 blue; 1 green, 10 blue, 14 red; 6 blue, 12 red, 15 green
+Game 88: 3 red, 7 green, 1 blue; 2 blue, 4 red, 4 green; 13 green, 3 red, 4 blue
+Game 89: 2 red, 14 green, 1 blue; 6 green, 2 red; 8 red, 8 green; 1 blue; 4 red, 1 blue, 15 green; 1 blue, 1 green, 8 red
+Game 90: 4 red, 4 blue; 9 red, 7 blue, 2 green; 9 blue, 8 red; 3 red, 1 blue; 15 blue, 9 red; 4 red, 4 blue, 2 green
+Game 91: 14 green, 4 red; 10 red, 13 green, 5 blue; 1 green, 7 red, 20 blue
+Game 92: 10 green, 7 blue; 12 green, 4 blue; 12 green, 4 red
+Game 93: 1 blue, 6 red; 2 blue, 10 red, 2 green; 2 green, 2 blue; 4 red, 2 blue; 4 red, 3 green
+Game 94: 2 red, 1 blue; 7 red, 1 green, 1 blue; 1 blue, 5 red; 1 green, 10 red
+Game 95: 1 red, 10 blue; 6 red, 4 blue; 2 blue, 4 red; 1 red, 2 green, 7 blue; 1 red, 6 blue
+Game 96: 1 green, 16 blue, 1 red; 7 red, 10 blue, 1 green; 18 blue, 12 red
+Game 97: 5 blue, 3 red, 8 green; 7 red, 14 green, 1 blue; 11 green
+Game 98: 1 green, 12 blue, 7 red; 6 red, 7 blue, 1 green; 5 red, 11 blue, 1 green; 2 green, 8 red, 8 blue
+Game 99: 11 red, 7 blue, 15 green; 3 red, 11 green, 5 blue; 19 green, 5 red, 1 blue; 7 green, 4 red
+Game 100: 10 red; 11 blue, 12 red; 1 green, 7 blue, 6 red
\ No newline at end of file
diff --git a/2023/go/main.go b/2023/go/main.go
index ab4582a..1ef3bec 100644
--- a/2023/go/main.go
+++ b/2023/go/main.go
@@ -8,6 +8,7 @@ import (
 //	"time"
 	"adventofcode2023/utils"
 	"adventofcode2023/day01"
+	"adventofcode2023/day02"
 )
 // Usage: go run main.go <NN>
 // assumes input is in day<NN>/input.txt
@@ -19,6 +20,9 @@ func main() {
 	case 1:
 		fmt.Printf("part 1: %d\n", day01.Part1(utils.Readfile(d)))
 		fmt.Printf("part 2: %d\n", day01.Part2(utils.Readfile(d)))
+	case 2:
+		fmt.Printf("part 1: %d\n", day02.Part1(utils.Readfile(d)))
+		fmt.Printf("part 2: %d\n", day02.Part2(utils.Readfile(d)))
 	default:
 		panic(fmt.Errorf("no such day: %d", d))
 	}
@@ -26,7 +30,7 @@ func main() {
 
 // Reads day from os.Args.
 func day() int {
-	latest := 0
+	latest := 1
 	if len(os.Args) == 1 {
 		return latest
 	}