add day-25 part1

day-25/.gitignore

@@ -0,0 +1 @@
+internal/two

day-25/cmd/cli/main.go

@@ -0,0 +1,41 @@
+/********************************************************************************
+    Advent of Code 2024 - day-25
+********************************************************************************/
+
+package main
+
+import (
+	"embed"
+	"flag"
+	"fmt"
+	"slices"
+
+	log "github.com/sirupsen/logrus"
+
+	problems "github.com/onyx-and-iris/aoc2024/day-25"
+)
+
+//go:embed testdata
+var files embed.FS
+
+func main() {
+	filename := flag.String("f", "input.txt", "input file")
+	loglevel := flag.Int("l", int(log.InfoLevel), "log level")
+	flag.Parse()
+
+	if slices.Contains(log.AllLevels, log.Level(*loglevel)) {
+		log.SetLevel(log.Level(*loglevel))
+	}
+
+	data, err := files.ReadFile(fmt.Sprintf("testdata/%s", *filename))
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	one, two, err := problems.Solve(data)
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	fmt.Printf("solution one: %d\nsolution two: %d\n", one, two)
+}

day-25/go.mod

@@ -0,0 +1,7 @@
+module github.com/onyx-and-iris/aoc2024/day-25
+
+go 1.23.3
+
+require github.com/sirupsen/logrus v1.9.3
+
+require golang.org/x/sys v0.12.0 // indirect

day-25/go.sum

@@ -0,0 +1,16 @@
+github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
+github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
+github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
+github.com/sirupsen/logrus v1.9.3 h1:dueUQJ1C2q9oE3F7wvmSGAaVtTmUizReu6fjN8uqzbQ=
+github.com/sirupsen/logrus v1.9.3/go.mod h1:naHLuLoDiP4jHNo9R0sCBMtWGeIprob74mVsIT4qYEQ=
+github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
+github.com/stretchr/testify v1.7.0 h1:nwc3DEeHmmLAfoZucVR881uASk0Mfjw8xYJ99tb5CcY=
+github.com/stretchr/testify v1.7.0/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
+golang.org/x/sys v0.0.0-20220715151400-c0bba94af5f8/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.12.0 h1:CM0HF96J0hcLAwsHPJZjfdNzs0gftsLfgKt57wWHJ0o=
+golang.org/x/sys v0.12.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c h1:dUUwHk2QECo/6vqA44rthZ8ie2QXMNeKRTHCNY2nXvo=
+gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=

day-25/internal/one/schematic.go

@@ -0,0 +1,55 @@
+package one
+
+import (
+	"strings"
+)
+
+type kindOfSchematic int
+
+const (
+	Lock kindOfSchematic = iota
+	Key
+)
+
+type schematic struct {
+	kind    kindOfSchematic
+	heights []int
+	data    []string
+}
+
+func newSchematic(buf [][]byte) *schematic {
+	var kind kindOfSchematic
+	data := make([]string, len(buf))
+	heights := make([]int, len(buf[0]))
+
+	for i, line := range buf {
+		data[i] = string(line)
+
+		if i == 0 {
+			if allInString(data[i], '#') {
+				kind = Lock
+			} else if allInString(data[i], '.') {
+				kind = Key
+			}
+		}
+
+		if kind == Lock && i == 0 {
+			continue
+		}
+		if kind == Key && i == len(buf)-1 {
+			continue
+		}
+
+		for j, r := range data[i] {
+			if r == '#' {
+				heights[j]++
+			}
+		}
+	}
+
+	return &schematic{kind, heights, data}
+}
+
+func (s *schematic) String() string {
+	return strings.Join(s.data, "\n")
+}

day-25/internal/one/solve.go

@@ -0,0 +1,34 @@
+package one
+
+import (
+	"bytes"
+
+	log "github.com/sirupsen/logrus"
+)
+
+func Solve(buf []byte) (int, error) {
+	r := bytes.NewReader(buf)
+	maxHeight, schematics, err := parseLines(r)
+	if err != nil {
+		return 0, err
+	}
+
+	var count int
+	for _, lock := range schematics[Lock] {
+		for _, key := range schematics[Key] {
+			if func() bool {
+				for i := range key.heights {
+					if key.heights[i]+lock.heights[i] > maxHeight {
+						return false
+					}
+				}
+				return true
+			}() {
+				count++
+				log.Debugf("lock: %v and key: %v", lock.heights, key.heights)
+			}
+		}
+	}
+
+	return count, nil
+}

day-25/internal/one/solve_internal_test.go

@@ -0,0 +1,15 @@
+package one
+
+import (
+	_ "embed"
+	"os"
+	"testing"
+)
+
+//go:embed testdata/input.txt
+var data []byte
+
+func BenchmarkSolve(b *testing.B) {
+	os.Stdout, _ = os.Open(os.DevNull)
+	Solve(data)
+}

day-25/internal/one/util.go

@@ -0,0 +1,30 @@
+package one
+
+import (
+	"bytes"
+	"io"
+)
+
+func parseLines(r io.Reader) (int, map[kindOfSchematic][]*schematic, error) {
+	raw, _ := io.ReadAll(r)
+	rawSchematics := bytes.Split(raw, []byte("\n\n"))
+
+	schematics := map[kindOfSchematic][]*schematic{Lock: {}, Key: {}}
+	for _, rawSchematic := range rawSchematics {
+		s := newSchematic(bytes.Split(rawSchematic, []byte("\n")))
+		schematics[s.kind] = append(schematics[s.kind], s)
+	}
+
+	maxHeight := len(schematics[Lock][0].heights)
+
+	return maxHeight, schematics, nil
+}
+
+func allInString(s string, r rune) bool {
+	for _, c := range s {
+		if c != r {
+			return false
+		}
+	}
+	return true
+}

day-25/makefile

@@ -0,0 +1,30 @@
+program = day-25
+
+GO = go
+SRC_DIR := src
+BIN_DIR := bin
+
+EXE := $(BIN_DIR)/$(program)
+
+.DEFAULT_GOAL := build
+
+.PHONY: fmt vet build bench clean
+fmt:        
+	$(GO) fmt ./...
+
+vet: fmt        
+	$(GO) vet ./...
+
+build: vet | $(BIN_DIR)
+	$(GO) build -o $(EXE) ./$(SRC_DIR)
+
+bench:
+	$(GO) test ./internal/one/ -bench=. > internal/one/benchmark
+	$(GO) test ./internal/two/ -bench=. > internal/two/benchmark
+	$(GO) test . -count=10 -bench=. > benchmark
+
+$(BIN_DIR):
+	@mkdir -p $@
+
+clean:
+	@rm -rv $(BIN_DIR)

day-25/solve.go

@@ -0,0 +1,20 @@
+package daytwentyfive
+
+import (
+	"github.com/onyx-and-iris/aoc2024/day-25/internal/one"
+	"github.com/onyx-and-iris/aoc2024/day-25/internal/two"
+)
+
+func Solve(buf []byte) (int, int, error) {
+	answerOne, err := one.Solve(buf)
+	if err != nil {
+		return 0, 0, err
+	}
+
+	answerTwo, err := two.Solve(buf)
+	if err != nil {
+		return 0, 0, err
+	}
+
+	return answerOne, answerTwo, nil
+}

day-25/solve_internal_test.go

@@ -0,0 +1,15 @@
+package daytwentyfive
+
+import (
+	_ "embed"
+	"os"
+	"testing"
+)
+
+//go:embed testdata/input.txt
+var data []byte
+
+func BenchmarkSolve(b *testing.B) {
+	os.Stdout, _ = os.Open(os.DevNull)
+	Solve(data)
+}