add day-23 + benchmarks

day-23/benchmark

@@ -0,0 +1,15 @@
+goos: linux
+goarch: amd64
+pkg: github.com/onyx-and-iris/aoc2024/day-23
+cpu: Intel(R) Core(TM) i7-8700K CPU @ 3.70GHz
+BenchmarkSolve-12    	1000000000	         0.2466 ns/op
+BenchmarkSolve-12    	1000000000	         0.2520 ns/op
+BenchmarkSolve-12    	1000000000	         0.2490 ns/op
+BenchmarkSolve-12    	1000000000	         0.2484 ns/op
+BenchmarkSolve-12    	1000000000	         0.2484 ns/op
+BenchmarkSolve-12    	1000000000	         0.2639 ns/op
+BenchmarkSolve-12    	1000000000	         0.2497 ns/op
+BenchmarkSolve-12    	1000000000	         0.2424 ns/op
+BenchmarkSolve-12    	1000000000	         0.2506 ns/op
+BenchmarkSolve-12    	1000000000	         0.2464 ns/op
+ok  	github.com/onyx-and-iris/aoc2024/day-23	37.530s

day-23/cmd/cli/main.go

@@ -0,0 +1,41 @@
+/********************************************************************************
+    Advent of Code 2024 - day-23
+********************************************************************************/
+
+package main
+
+import (
+	"embed"
+	"flag"
+	"fmt"
+	"slices"
+
+	log "github.com/sirupsen/logrus"
+
+	problems "github.com/onyx-and-iris/aoc2024/day-23"
+)
+
+//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: %s\n", one, two)
+}

day-23/go.mod

@@ -0,0 +1,7 @@
+module github.com/onyx-and-iris/aoc2024/day-23
+
+go 1.23.3
+
+require github.com/sirupsen/logrus v1.9.3
+
+require golang.org/x/sys v0.0.0-20220715151400-c0bba94af5f8 // indirect

day-23/go.sum

@@ -0,0 +1,15 @@
+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 h1:0A+M6Uqn+Eje4kHMK80dtF3JCXC4ykBgQG4Fe06QRhQ=
+golang.org/x/sys v0.0.0-20220715151400-c0bba94af5f8/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-23/internal/one/benchmark

@@ -0,0 +1,6 @@
+goos: linux
+goarch: amd64
+pkg: github.com/onyx-and-iris/aoc2024/day-23/internal/one
+cpu: Intel(R) Core(TM) i7-8700K CPU @ 3.70GHz
+BenchmarkSolve-12    	1000000000	         0.003422 ns/op
+ok  	github.com/onyx-and-iris/aoc2024/day-23/internal/one	0.029s

day-23/internal/one/solve.go

@@ -0,0 +1,51 @@
+package one
+
+import (
+	"bytes"
+	"slices"
+	"strings"
+
+	"github.com/onyx-and-iris/aoc2024/day-23/internal/set"
+)
+
+func Solve(buf []byte) (int, error) {
+	r := bytes.NewReader(buf)
+	connections, err := parseLines(r)
+	if err != nil {
+		return 0, err
+	}
+
+	networks := make(map[string]*set.Set)
+	for _, connection := range connections {
+		if _, found := networks[connection[0]]; !found {
+			networks[connection[0]] = set.New()
+		}
+		networks[connection[0]].Add(connection[1])
+
+		if _, found := networks[connection[1]]; !found {
+			networks[connection[1]] = set.New()
+		}
+		networks[connection[1]].Add(connection[0])
+	}
+
+	setIdentifiers := make(map[string]struct{})
+	for name := range networks {
+		if !strings.HasPrefix(name, "t") {
+			continue
+		}
+
+		for _, node := range networks[name].List() {
+			for _, node2 := range networks[node].List() {
+				if slices.Contains(networks[node2].List(), name) {
+					s := set.New()
+					s.Add(name)
+					s.Add(node)
+					s.Add(node2)
+					setIdentifiers[s.String()] = struct{}{}
+				}
+			}
+		}
+	}
+
+	return len(setIdentifiers), nil
+}

day-23/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-23/internal/one/util.go

@@ -0,0 +1,22 @@
+package one
+
+import (
+	"bufio"
+	"io"
+	"strings"
+)
+
+func parseLines(r io.Reader) ([][]string, error) {
+	connections := [][]string{}
+
+	scanner := bufio.NewScanner(r)
+	for scanner.Scan() {
+		connections = append(connections, strings.Split(scanner.Text(), "-"))
+	}
+
+	if err := scanner.Err(); err != nil {
+		return nil, err
+	}
+
+	return connections, nil
+}

day-23/internal/set/set.go

@@ -0,0 +1,75 @@
+package set
+
+import (
+	"fmt"
+	"slices"
+)
+
+// Set is a collection of unique elements
+type Set struct {
+	elements map[string]struct{}
+}
+
+// New creates a new set
+func New() *Set {
+	return &Set{
+		elements: make(map[string]struct{}),
+	}
+}
+
+func (s *Set) String() string {
+	l := s.List()
+	slices.Sort(l)
+	return fmt.Sprintf("%v", l)
+}
+
+// Add inserts an element into the set
+func (s *Set) Add(value string) {
+	s.elements[value] = struct{}{}
+}
+
+// Remove deletes an element from the set
+func (s *Set) Remove(value string) {
+	delete(s.elements, value)
+}
+
+// Contains checks if an element is in the set
+func (s *Set) Contains(value string) bool {
+	_, found := s.elements[value]
+	return found
+}
+
+// Size returns the number of elements in the set
+func (s *Set) Size() int {
+	return len(s.elements)
+}
+
+// List returns all elements in the set as a slice
+func (s *Set) List() []string {
+	keys := make([]string, 0, len(s.elements))
+	for key := range s.elements {
+		keys = append(keys, key)
+	}
+	return keys
+}
+
+func (s *Set) Union(other *Set) *Set {
+	result := New()
+	for key := range s.elements {
+		result.Add(key)
+	}
+	for key := range other.elements {
+		result.Add(key)
+	}
+	return result
+}
+
+func (s *Set) Intersection(other *Set) *Set {
+	result := New()
+	for key := range s.elements {
+		if other.Contains(key) {
+			result.Add(key)
+		}
+	}
+	return result
+}

day-23/internal/two/benchmark

@@ -0,0 +1,6 @@
+goos: linux
+goarch: amd64
+pkg: github.com/onyx-and-iris/aoc2024/day-23/internal/two
+cpu: Intel(R) Core(TM) i7-8700K CPU @ 3.70GHz
+BenchmarkSolve-12    	1000000000	         0.2431 ns/op
+ok  	github.com/onyx-and-iris/aoc2024/day-23/internal/two	3.693s

day-23/internal/two/clique.go

@@ -0,0 +1,16 @@
+package two
+
+import "slices"
+
+type clique struct {
+	values []string
+}
+
+func (c *clique) Len() int {
+	return len(c.values)
+}
+
+func (c *clique) sorted() []string {
+	slices.Sort(c.values)
+	return c.values
+}

day-23/internal/two/solve.go

@@ -0,0 +1,83 @@
+package two
+
+import (
+	"bytes"
+	"slices"
+	"strings"
+	"sync"
+
+	"github.com/onyx-and-iris/aoc2024/day-23/internal/set"
+	log "github.com/sirupsen/logrus"
+)
+
+func Solve(buf []byte) (string, error) {
+	r := bytes.NewReader(buf)
+	connections, err := parseLines(r)
+	if err != nil {
+		return "", err
+	}
+
+	networks := make(map[string]*set.Set)
+	nodes := set.New()
+	for _, connection := range connections {
+		if _, found := networks[connection[0]]; !found {
+			networks[connection[0]] = set.New()
+		}
+		networks[connection[0]].Add(connection[1])
+
+		if _, found := networks[connection[1]]; !found {
+			networks[connection[1]] = set.New()
+		}
+		networks[connection[1]].Add(connection[0])
+
+		nodes.Add(connection[0])
+		nodes.Add(connection[1])
+	}
+
+	cliquesChan := make(chan clique)
+	var wg sync.WaitGroup
+	wg.Add(1)
+	go func() {
+		defer wg.Done()
+		next([]string{}, nodes, set.New(), cliquesChan, networks, &wg)
+	}()
+
+	go func() {
+		wg.Wait()
+		close(cliquesChan)
+	}()
+
+	var maxLen int
+	var maxLenClique []string
+	for c := range cliquesChan {
+		if c.Len() > maxLen {
+			maxLen = c.Len()
+			maxLenClique = c.sorted()
+			log.Debug(c)
+		}
+	}
+
+	return strings.Join(maxLenClique, ","), nil
+}
+
+func next(
+	R []string,
+	P, X *set.Set,
+	cliquesChan chan<- clique,
+	networks map[string]*set.Set,
+	wg *sync.WaitGroup,
+) {
+	if P.Size() == 0 && X.Size() == 0 {
+		cliquesChan <- clique{slices.Clone(R)}
+		return
+	}
+
+	for _, v := range P.List() {
+		nextR := append(R, v)
+
+		next(nextR, P.Intersection(networks[v]), X.Intersection(networks[v]), cliquesChan, networks, wg)
+
+		P.Remove(v)
+		X.Add(v)
+	}
+}

day-23/internal/two/solve_internal_test.go

@@ -0,0 +1,15 @@
+package two
+
+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-23/internal/two/util.go

@@ -0,0 +1,22 @@
+package two
+
+import (
+	"bufio"
+	"io"
+	"strings"
+)
+
+func parseLines(r io.Reader) ([][]string, error) {
+	connections := [][]string{}
+
+	scanner := bufio.NewScanner(r)
+	for scanner.Scan() {
+		connections = append(connections, strings.Split(scanner.Text(), "-"))
+	}
+
+	if err := scanner.Err(); err != nil {
+		return nil, err
+	}
+
+	return connections, nil
+}

day-23/makefile

@@ -0,0 +1,30 @@
+program = day-23
+
+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-23/solve.go

@@ -0,0 +1,20 @@
+package daytwentythree
+
+import (
+	"github.com/onyx-and-iris/aoc2024/day-23/internal/one"
+	"github.com/onyx-and-iris/aoc2024/day-23/internal/two"
+)
+
+func Solve(buf []byte) (int, string, error) {
+	answerOne, err := one.Solve(buf)
+	if err != nil {
+		return 0, "", err
+	}
+
+	answerTwo, err := two.Solve(buf)
+	if err != nil {
+		return 0, "", err
+	}
+
+	return answerOne, answerTwo, nil
+}

day-23/solve_internal_test.go

@@ -0,0 +1,15 @@
+package daytwentythree
+
+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)
+}