From 95304d3d6df6a19c41eb7a9788023c6868bb6229 Mon Sep 17 00:00:00 2001
From: Alexander Avery <alex.avery@beetbox.io>
Date: Tue, 10 Dec 2024 17:06:48 -0500
Subject: [PATCH] complete day 5

---
 2024/day05.go       |   99 ++++
 2024/inputs/05.txt  | 1373 +++++++++++++++++++++++++++++++++++++++++++
 2024/puzzle_test.go |   33 ++
 main.go             |    1 +
 4 files changed, 1506 insertions(+)
 create mode 100644 2024/day05.go
 create mode 100644 2024/inputs/05.txt

diff --git a/2024/day05.go b/2024/day05.go
new file mode 100644
index 0000000..729c51f
--- /dev/null
+++ b/2024/day05.go
@@ -0,0 +1,99 @@
+package adventoc2024
+
+import (
+	"bufio"
+	"io"
+	"slices"
+	"sort"
+	"strings"
+)
+
+type Day5 struct{}
+
+func (d Day5) Part1(r io.Reader) string {
+	s := bufio.NewScanner(r)
+	before := make(map[int][]int, 100)
+	var sum int
+
+	var updates bool
+Scan:
+	for s.Scan() {
+		updates = updates || s.Text() == ""
+
+		if !updates {
+			s1, s2, _ := strings.Cut(s.Text(), "|")
+			i, j := atoi(s1), atoi(s2)
+			before[j] = append(before[j], i)
+		} else if s.Text() != "" {
+			pages := strings.Split(s.Text(), ",")
+			var v1, v2 int
+			for i := range pages {
+				v1 = atoi(pages[i])
+
+				for j := range pages[i+1:] {
+					v2 = atoi(pages[i+j+1])
+					for _, mustbefore := range before[v1] {
+						if mustbefore == v2 {
+							continue Scan
+						}
+					}
+				}
+			}
+			sum += atoi(pages[(len(pages)-1)/2])
+		}
+	}
+
+	return printi(sum)
+}
+
+func (d Day5) Part2(r io.Reader) string {
+	s := bufio.NewScanner(r)
+	before := make(map[int][]int, 100)
+	var sum int
+
+	var updates bool
+	for s.Scan() {
+		updates = updates || s.Text() == ""
+
+		if !updates {
+			s1, s2, _ := strings.Cut(s.Text(), "|")
+			i, j := atoi(s1), atoi(s2)
+			before[j] = append(before[j], i)
+		} else if s.Text() != "" {
+			pages := strings.Split(s.Text(), ",")
+			pageNums := make([]int, len(pages))
+			pageCopy := make([]int, len(pages))
+
+			for i := range pages {
+				pageNums[i], pageCopy[i] = atoi(pages[i]), atoi(pages[i])
+			}
+
+			sortPages(pageNums, before)
+			if !slices.Equal(pageNums, pageCopy) {
+				sum += middlePage(pageNums)
+			}
+		}
+	}
+
+	return printi(sum)
+}
+
+func sortPages(update []int, before map[int][]int) {
+	sort.Slice(update, func(i, j int) bool {
+		v1 := update[i]
+		v2 := update[j]
+
+		search := before[v1]
+		for k := range search {
+			if search[k] == v2 {
+				return false
+			}
+		}
+
+		return true
+	})
+}
+
+func middlePage(pages []int) int {
+	return pages[(len(pages)-1)/2]
+}
diff --git a/2024/inputs/05.txt b/2024/inputs/05.txt
new file mode 100644
index 0000000..3a1a5ec
--- /dev/null
+++ b/2024/inputs/05.txt
@@ -0,0 +1,1373 @@
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+59|75
+59|67
+59|36
+59|45
+59|76
+59|15
+59|91
+59|78
+76|13
+76|36
+76|78
+76|31
+76|15
+76|12
+76|98
+41|43
+41|59
+41|78
+41|42
+41|95
+41|15
+66|17
+66|95
+66|13
+66|67
+66|22
+98|33
+98|78
+98|13
+98|55
+51|99
+51|45
+51|89
+57|17
+57|91
+67|29
+
+98,22,35,93,25,67,78,13,75,21,18,51,17,33,55,45,64,31,96,29,65
+41,43,66,36,91,15,98,25,67,78,75
+66,91,22,15,18,98,76,13,78,42,93,67,95,35,17,33,36,25,59,12,21,75,57
+89,83,99,54,41,57,66,59,91,42,95,15,98,93,25
+87,11,92,46,89,83,53,81,57,66,91
+78,75,51,64,65,16,71
+31,37,96,29,87,65,11,92,46,71,83,81,66
+21,51,17,29,92,71,89
+17,87,86,11,82,92,46,71,53,88,54
+86,11,82,46,16,83,53,99,41,43,81,66,59,76,91,12,42
+43,66,91,75,41,12,98,59,76,25,18,95,22,35,15
+43,66,59,76,91,67,13,75,21,18,51
+57,59,76,36,91,12,95,15,22,35,93,25,67,78,13,75,18,51,33
+35,93,67,75,18,55,96,87,86,11,82
+43,92,71,76,57,88,53,82,81,86,41,12,16,66,89,46,99,65,11,36,54,59,83
+37,21,51,92,45,89,13,64,71,11,18
+42,15,22,35,78,18,51,17,33,64,31,96,29
+51,17,33,64,31,37,96,29,87,86,11,82,46,16,71,83,53,99,88
+37,96,25,13,18
+53,81,88,66,96,86,87,16,71,43,57,37,29,99,83,82,46,59,11,65,92
+59,12,43,99,76,66,53,82,16,92,54,15,41,81,71,89,88,46,57
+76,42,91,71,54,81,88,12,41,53,57,83,43,66,11,82,16,92,59,89,95
+96,31,35,98,45,64,55,18,13,75,12,42,21,95,33,51,78,17,22
+95,35,33,51,22,91,12,78,66,93,59,75,18,55,15,36,42
+43,35,93,95,81,42,41
+16,71,89,99,88,41,59,36,91,12,95,98,35
+55,53,82,64,45,21,31
+95,33,35,13,36,25,51,22,91,15,98,31,45,93,42
+36,22,93,89,95,99,88,57,42,12,66,35,53,98,25,91,83,54,76,81,59
+76,53,11,43,59,99,95,92,81,12,46,88,91
+35,25,67,17,33,45,96,65,11
+42,95,15,98,22,35,93,25,67,78,13,75,21,51,17,33,45,64,31,96,29
+13,75,21,17,45,64,96,87,82,92,16,71,89
+71,89,83,53,99,88,54,41,66,76,42,95,15,98,22,35,93
+45,64,31,29,87,82,46,54,81
+36,98,66,83,93,57,25,91,43,12,22,99,35,95,89,15,42,76,41
+21,51,17,64,29,11,89
+55,78,93,21,92,45,29,13,86
+91,43,83,76,81,53,16,71,92,57,82,46,54
+16,99,41,81,91,42,35
+67,21,25,45,13,12,42,22,33,17,55,93,18,15,91,78,59
+59,36,91,12,42,95,15,98,22,35,67,78,13,75,21,18,51,17,33,55,45
+41,65,36,91,11,99,66,89,76,86,92,43,54,16,82,81,12
+82,54,65,66,81,86,88,11,71,43,29,53,46,36,57,59,92,89,16
+46,16,65,87,66,88,36,71,57,89,99,81,11,43,29
+81,46,76,71,54,43,89,96,29,53,66,88,99,41,57
+12,18,15,36,95,75,66,91,41,21,42,59,35
+82,64,65,18,45,29,11,67,51,87,78,25,21
+67,21,17,33,64,31,65,11,82,46,16
+33,91,93,67,76,75,95,55,42,35,78,64,51
+22,59,95,66,81,21,15,43,42,67,51,93,18,25,57
+99,88,54,41,43,81,57,66,59,76,91,12,42,15,98,22,35,93,25,67,13
+25,67,78,13,75,18,17,33,55,45,31,96,87,65,11,82,46
+35,67,12,21,81,75,76,93,59,36,17,98,42
+91,25,88,59,36,12,89
+12,22,36,93,81,66,35,57,15,91,76,95,88,25,98,99,89,43,54
+67,78,13,75,21,17,55,45,31,37,29,65,11,82,46
+25,67,78,75,51,31,96,29,65,86,82,92,46
+78,65,45,33,15,17,55,13,25,67,87,35,37,64,21,18,31
+98,41,92,54,71,66,91,57,99,43,83,46,15
+98,51,36,33,75,64,93,31,95,67,22,18,12
+87,86,92,71,89,53,99,88,54,41,81,57,59,36,91
+66,83,22,53,88
+17,59,35,33,45,18,25,95,42,51,15,21,13,75,67,98,22,55,91,78,76,93,12
+21,75,55,17,66,12,15,22,93,59,98
+81,57,66,59,76,36,91,12,42,95,15,98,22,35,93,67,78,13,75,21,18,51,17
+12,98,22,25,67
+86,11,82,46,16,83,53,99,88,54,41,57,66,59,36,91,42
+35,67,78,13,75,21,18,51,17,33,55,45,64,31,37,96,29,87,65,11,82
+92,46,71,53,99,43,57,59,76,91,12
+95,15,98,22,35,93,25,67,13,75,21,18,51,17,33,55,45,64,31,37,96,29,87
+36,16,81,66,83,46,53,88,57,54,12,11,41,89,76,95,71
+12,81,53,42,83,89,99,82,66,71,92,76,16,59,11,91,95,54,88
+36,57,76,13,33,21,12,18,95
+87,65,86,82,46,16,71,89,53,88,54,41,43,81,66,59,76,36,91
+76,42,35,93,25,13,75,21,18,51,64
+21,18,17,55,45,37,29,65,92,16,53
+25,67,18,92,93,33,31
+15,93,13,31,37,96,65
+42,35,93,67,75,18,45,64,96
+78,31,29,64,15,33,42,37,17,96,75
+41,54,25,42,59,53,36,88,91,67,57,22,15,95,78
+55,64,37,96,92,16,71,83,53,54,43
+99,96,11,46,51,89,86,37,33,31,55,64,53,71,45
+81,66,59,12,95,22,35,67,78,13,21,18,17
+76,81,95,15,98,75,57,13,88,66,22
+53,93,15,83,57,91,66,42,22,99,59,67,88,25,54
+45,64,37,29,86,11,46,16,89,83,88,43,81
+96,12,25,15,98,95,35
+64,51,15,22,45,12,93,91,25,13,17,18,42,78,55,36,76,75,98,35,67,33,95
+93,25,67,33,31,86,92
+17,33,55,45,64,31,37,29,87,65,86,11,82,92,46,16,71,89,83,53,99,88,54
+98,46,81,89,71,57,54,88,92,42,95,12,16,76,41
+92,11,57,99,29,37,59,41,53,65,87,71,16,82,81,86,96,66,43,88,46,83,89
+33,45,31,37,96,29,87,65,86,82,92,46,16,71,89,53,99,88,41
+65,86,11,92,46,88,81,91,12
+15,98,22,35,93,25,67,78,13,75,21,18,51,17,33,55,45,64,31,96,29,87,65
+86,41,43,87,65,54,59,92,11
+66,59,76,36,15,98,22,25,67,78,13,21,18,17,55
+35,75,76,42,95,54,21,13,57
+17,55,45,64,31,37,96,29,87,65,86,11,82,92,46,16,71,89,83,53,99,88,54
+66,59,76,36,91,12,42,95,15,98,22,35,93,25,67,78,75,21,18,51,17,33,55
+59,54,71,43,91,12,76,81,83,46,36,16,53,57,41,88,92,82,11
+29,75,17,37,13,22,65,67,78,18,55,93,21
+41,57,66,59,76,91,98,22,35,67,78,13,18
+87,65,86,11,92,46,16,71,89,53,88,54,41,43,81,57,59,76,91
+76,91,12,95,22,93,25,67,75,17,64
+35,13,75,18,33,37,96,65,82
+18,65,87,67,35,55,29,45,13,93,51,86,78,96,11,21,64,33,22,17,75,37,25
+25,29,21,75,22,37,33,67,55,11,18,86,51
+16,71,89,53,99,88,54,43,81,59,76,36,91,12,95,15,98,22,35
+25,11,13,65,29,17,46,86,75,92,96
+65,11,82,16,71,83,53,66,12
+95,98,93,51,96
+67,13,75,21,18,51,17,33,64,37,96,29,87,65,86,11,82,46,16
+81,57,66,59,36,91,42,15,35,25,67,75,21
+12,57,88,42,53,98,78,36,22,43,15,91,35,99,25,54,95,41,76
+57,91,15,98,22,35,93,67,78,13,75,17,33
+41,89,15,81,98,54,57,35,43,36,91,95,71,53,12,83,76,66,42,59,93
+46,17,16,65,18,99,86,29,71,89,82,96,83,51,53,55,87
+95,42,15,18,41,75,22,36,59,93,21
+37,45,29,92,31,16,18,51,86,75,17,55,82,67,13,78,46
+81,59,76,36,91,42,15,98,22,35,25,78,13,75,18,51,17
+65,45,55,17,18,78,31,93,64,51,87,67,35,75,22,29,86,96,33,25,98
+92,46,71,89,83,53,99,88,54,43,81,57,66,59,76,36,91,12,42,15,98
+54,59,53,82,87,36,86,88,99,81,41,11,89,92,46
+33,17,89,45,46,92,53,51,87,18,55,11,64,37,65
+78,21,51,64,37,87,65,11,46,16,71
+76,36,12,42,95,15,22,93,25,67,78,13,51,17,33,45,64
+41,96,29,88,89,65,76
+15,98,22,35,93,25,67,78,13,75,21,18,51,33,55,45,64,31,37,96,29,87,65
+82,46,71,53,99,54,41,81,12,95,15
+45,11,88,54,92,46,96,29,86,81,41
+41,15,88,83,54,98,43,67,22,93,76,42,53,25,99
+87,22,17,51,55,86,25,96,13,45,29,31,65,64,35,93,21
+18,64,93,55,17,95,98,45,15,13,36,12,78,75,91,76,25
+22,35,93,25,67,78,75,21,18,51,33,45,64,31,37,96,29,87,65,86,11
+71,89,99,88,54,41,43,81,57,59,76,91,12,98,22,35,93
+13,81,93,21,42,66,25,35,67,95,91,17,36
+95,89,22,15,66,25,76
+95,22,35,67,64,29,87
+18,51,17,33,55,45,64,96,29,87,65,86,11,82,92,46,71,89,83,53,99
+41,36,57,91,59,66,42,99,82,43,88,92,83,71,15,16,95,89,54
+36,22,35,93,25,67,78
+41,81,59,93,25
+95,15,98,22,35,93,25,13,75,21,51,17,33,55,45,31,37,96,29
+16,71,46,53,92,41,66,54,65,89,29,86,59,43,82,81,36,83,99,76,88
+29,93,51,55,33
+51,64,87,86,11,83,88
+53,46,95,76,88,22,89,99,91,81,83
+81,76,57,15,42
+89,53,99,57,59
+64,37,96,29,87,86,82,92,46,83,54,41,43,81,57
+71,92,89,57,53,31,43,66,16
+81,12,98,35,67,78,17
+46,71,89,83,53,99,41,43,57,66,12,42,95,15,22
+57,66,59,76,36,91,12,42,15,98,22,35,93,25,13,75,18,51,33
+29,13,17,11,37,92,65,55,75
+99,36,86,53,11,12,54,46,82,59,89,42,92,16,57,88,91,66,41,83,43
+75,18,17,33,55,45,64,31,37,96,29,87,65,86,11,82,92,46,16,89,83
+12,42,95,15,35,93,25,67,13,17,33,64,31,37,96
+92,46,71,83,88,54,41,81,59,76,98
+51,17,33,55,45,64,31,37,29,87,65,86,11,82,92,46,16,71,89,83,53,99,88
+59,46,16,12,42,82,36,43,83,57,99,95,11,71,92,54,53,41,89,91,66
+93,25,67,13,75,21,18,51,55,45,64,31,37,96,87,65,11,82,92
+91,42,98,93,25,78,13,21,51
+82,86,17,33,45,89,65,31,71,16,29,11,13
+43,81,57,66,59,36,91,15,21
+31,92,16,89,83,41,66
+95,15,98,22,93,25,67,78,13,75,21,18,51,17,33,55,45,64,31,37,96,29,87
+46,54,87,43,89,88,66,71,83,96,41,31,65
+82,95,12,15,36,91,89
+59,15,66,12,89
+87,54,64,96,11,46,37,92,16,41,53,89,33,45,29,31,99,82,55
+55,45,64,31,37,96,29,87,65,86,11,46,16,89,83,53,99,54,43
+17,33,55,45,64,31,37,96,29,87,86,11,82,92,46,16,71,89,83,53,99,88,54
+67,13,22,29,21,33,45,31,55,95,25,15,17,51,37
+43,81,57,66,59,76,91,12,42,95,15,35,93,67,13,75,21,18,51
+18,17,33,55,45,64,31,37,96,29,87,65,86,11,82,92,16,89,83,53,99
+22,57,75,15,78,43,21,41,18,42,13,36,67,91,76
+53,71,16,11,57,92,64,29,88,54,43,96,86,89,81,46,31
+91,12,95,15,22,93,78,13,51,17,33,64,37
+59,76,36,91,12,42,95,15,98,22,35,25,67,75,21,18,51,17,33,55,45
+46,16,71,89,83,53,99,41,43,81,57,59,76,36,91,12,95,98,22
+83,53,99,88,54,41,57,66,76,36,91,12,95,15,98,22,93,25,67
+75,21,18,51,17,33,55,64,31,37,96,87,65,86,11,82,92,46,16,71,83
+64,43,71,53,81,31,65,37,92
+46,42,66,15,59,95,53,99,81,71,83,76,91,54,92,36,89,88,57,16,43
+15,51,35,78,55,33,95,67,45,31,21,18,29,22,17,75,37,64,13,98,96
+53,99,88,54,41,43,57,66,59,12,95,15,98,22,93,67,78
+11,82,46,16,71,89,83,53,99,88,54,41,43,81,57,66,59,76,36,91,12,42,95
+33,71,55,21,65,45,86,37,29,13,11,87,75,46,78,18,51
+96,17,51,88,33,89,92,83,46
+43,54,36,53,71,92,83,76,89,66,46,99,29
+89,99,88,17,11,86,82,83,46,33,55,64,96,87,31,54,53
+78,18,45,65,93,87,29,31,13,25,11,92,82,51,55,86,96,37,64
\ No newline at end of file
diff --git a/2024/puzzle_test.go b/2024/puzzle_test.go
index 1567181..edda88d 100644
--- a/2024/puzzle_test.go
+++ b/2024/puzzle_test.go
@@ -80,6 +80,39 @@ S.S.S.S.S.
 M.M.M.M.M.
 ..........`,
 		},
+		{
+			solver: Day5{},
+			ans1:   "143",
+			ans2:   "123",
+			inp1: `47|53
+97|13
+97|61
+97|47
+75|29
+61|13
+75|53
+29|13
+97|29
+53|29
+61|53
+97|53
+61|29
+47|13
+75|47
+97|75
+47|61
+75|61
+47|29
+75|13
+53|13
+
+75,47,61,53,29
+97,61,53,29,13
+75,29,13
+75,97,47,61,53
+61,13,29
+97,13,75,29,47`,
+		},
 	}
 
 	for i, tt := range tests {
diff --git a/main.go b/main.go
index 33727f7..4cb657c 100644
--- a/main.go
+++ b/main.go
@@ -20,6 +20,7 @@ var puzzles = map[string]puzzle{
 	"2": adventoc2024.Day2{},
 	"3": adventoc2024.Day3{},
 	"4": adventoc2024.Day4{},
+	"5": adventoc2024.Day5{},
 }
 
 func main() {