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No commits in common. "main" and "working2024D3" have entirely different histories.

15 changed files with 17 additions and 2244 deletions

View File

@ -25,9 +25,7 @@ func run(read io.Reader) (*result, error) {
sum := 0
sum2 := 0
lexer, stop := Lexer(read)
defer stop()
lexer := Lexer(read)
active := true
for lexer.NextTok() {
@ -54,7 +52,7 @@ func run(read io.Reader) (*result, error) {
return &result{sum, sum2}, nil
}
func Lexer(in io.Reader) (*lexer, func()) {
func Lexer(in io.Reader) *lexer {
seq := func(yield func(rune) bool) {
buf := make([]byte, 256)
s, _ := in.Read(buf)
@ -74,10 +72,10 @@ func Lexer(in io.Reader) (*lexer, func()) {
}
}
next, stop := iter.Pull(seq)
lex := lexer{iter: next}
lex := lexer{iter: next, stop: stop}
lex.readRune()
lex.readRune()
return &lex, stop
return &lex
}
type lexer struct {
@ -85,12 +83,15 @@ type lexer struct {
next rune
iter func() (rune, bool)
stop func()
buf []rune
token string
literal []rune
}
func (l *lexer) Stop() { l.stop() }
func (l *lexer) readRune() {
if l.rune == -1 {
return
@ -171,6 +172,16 @@ func (l *lexer) NextTok() bool {
return true
}
func (l *lexer) Iter() iter.Seq2[string, string] {
return func(yield func(string, string) bool) {
for l.NextTok() {
if !yield(l.token, string(l.literal)) {
return
}
}
}
}
func readMul(lex *lexer) int {
if lex.token != "TokMUL" || string(lex.literal) != "mul" {
return 0

View File

@ -1,10 +0,0 @@
MMMSXXMASM
MSAMXMSMSA
AMXSXMAAMM
MSAMASMSMX
XMASAMXAMM
XXAMMXXAMA
SMSMSASXSS
SAXAMASAAA
MAMMMXMMMM
MXMXAXMASX

View File

@ -1,140 +0,0 @@
XMXXMSSSMSXSXMMXSAMMXXSXMASMSSXXMAMXAMXSXMXSMAMMASXXASMMXMASXMSSXMMMXMXSXXSXMXXSAMXSXSXSAMXMSAMXMAXXXMXMAMSASXMSSXMSXSXXMAXXSSSMXMXMXMMAASXM
MSSMMAAXAMMSAAAXXAMSXMAMXMSMAMMXSAXMXMASAMASMAMMASXMAMAXXXMASAAAXMSMSMAMAMMAMAMMMMXMASMMXMXAMASXMAMMMMASMMSMMMMASAAXAAMMMMSMXAAMSAMSASMMMMAX
AAAXMMXMSMASXMMSMXMMASMAAMXMASAMMAXSAMASAMASXXSMASASMSMMMMASMMMMMMAAXMXSAMSAMASMASAMAMASMMMMSAMXMAXAASASAAXAAXMASMMMSMXAAXAAMSMMMAXMAXMAASMM
SSMMXSAAXMMSAXMAXAAXAMXXMSSSMSMAMAMXAMXXXMXSXMMMMSAMXAXXAMXAXXMAXMASMXASAXXMSAXXASAMAXAMXXAXMXXMSASXMMASMMSSMSMMSASAMXSSSSMSAAAXMMMMXMMSXSXA
XAAAAMMSMSXXMXAASXSMSMSMXXMAMXMASXSSMMXMAMAMMMAAMMAMMMXSSMSAMXSMSASMXXMSXMAAMAMMMSXMAMMSXSASASAMXASXAMAXMAAAAXXMSXMXMXMXMAXAMXSAXAAXAXAXAMXS
SXMMSXAXASXAMMMMSXMXMASXMMXMMSMAXXMAMAMXAMASASMSMXAMXMMAMASAMXSXMMXAXSXSAMXMMAMAAMXMASMAXAAMAMSMMXMMMMMSMMMSAMXAXMMMSXSASMMMSMMMSSSMMMMMAMSM
AAXAXMSMAMSMMAAMSMSAMMMAMAASASMASMSAMAMMASASASXMASMSMSAAMAMAMAMASXMMMAASXMAXSASMMXAXAMMMMMSMXMAXSASASAMXXSMMMSMMMAXAAASAXSAXXAAAMAMXSASMXMAS
SSMMSMAMSMSXMSMMSASXSXSAMSMMASASMMSASASMXMMXMMXMASAAAXAMMXSAMASMMMAXXMMMXSAMXXSAMSMMSSXXAAAMMSSMSASXMASMXMASAXAMSSMMMMMMMMXSSSMXSAMXSASXMSMS
XMAMAXMXXAMAMAMAMXMXXASAXAXMXMXASASAMASMSAMXXSSMMMMMMMAMXMSASXMMASMMSSMMMSMMMMMMMASMXAMSMSMSAMXAMAMAXAMMMMAMMMSAAXSASASASXMAMAAXMASXMMMMXSXS
SMASXSXASASAMAMXSSSSMASXMASMSMSAMXMAMXMASAMSXMAASAMSXXMMXASAMXMSAMAAXXAAAMAMMAAMXAXXMAXMAAXMAXMXMSMSMMMMAXMMSAAMXSMXSASAAMAMSXMMSXXAXAAXMSAS
XMAXMXAXSAMXXXMAMXAAXMMMXAAAAAXASMSSMXMXMAMXASAMMASMXSXMXMMAMAAMASMMSMSMXSAMXMMSMSSXSXMMSMSSSMXXAMAXMAXSAXMAMXSAMXXXMMMMMASXSMSXXMMMSMMMAMMM
SMSSSXSAMXMMSMSMXMSMMAAXXSXSMMSAMAMAXXXXSAMSAMASMXMMASAMXXMAMSSSMMAXAXAXXMMXSAMSAMAMXAXXMXAAXXAXMMSMMSAMXSMASAMAASAMSAMXXSMAXAMMXAAMAMXSMSMS
SAXAMAXAMAAASAAAAMAXMMXMMXMXAMXAMAMMMMMMSSXMAXAMAXAMMMMSAMSMXXMAMXMSXSMSMSAAXAMMAMMMSXMMXMMSMAMSMAMAAXMSAAXAMXSMMAMAAASXMMMMMSMMMSXSASMSAAAA
MMMAMMMSXSSMMSMSXSAMMSMMASXMSMSMSASXAXAXMXXSXMSSXSMXSXXXAXAMMMXAMAAXMSXAMMMSSMMSAMAMAAMSAMXAMAMXMAXMMSAMXSMMSAXASXXXSXMXXAAAAMAMAMXSAMAMSMMM
SSSSMMXMXMXAAMXMASAMSAMMAXXAAAAAXASXMSXSAMXMAXXAXXMASMSMMSMSAMMSSMMXAMSXSAMXAMAXXXASXMMAMMXXSXMAXMXSAMXMAMMXMASMMMSXMAMAXXSSMSAMSXMMSMMMMMMM
SAAXMMAMAXSSMSAXAMAMMAXMMSMSMMMSMSMMXAMMXAASMMMXMAMASAAAAAASMSAXAAAMMMMMSASMMMMSSMMXAXSMMSAMSAMAMSAMAMAXSXMAMAAXAAAMSXMASXAAMMMMAAMAMXXXAAAA
XMSMSMASMMMMASMMSSSMSSMSAAXXASAMXMAMMASMMSXSXAMXSXMAMXMSSXXMAMXSMMXSAAAASXMASXSAMMSSSMXAAMAMSAMSSMASXMSAMXSSSSSMXSAMXXSASMMMMAAMSSMAXASMSSSS
MXMAASMMMAASXMXXAAXMAAAMSSMSXMASAMAMSSMAAXAMMMXXMXMAXAXMAMXMXMXXXMASXSMXMMXAMXMASAXMMAMMMSMMMAMXAXAMMMMAMAMAAXXAMMMXXMMXMXSXSSMMAMMSMXMAMAMM
XAMMMSXAXSXSMMXMMMMMSMMMAMASXMAXXXXMXAMMXXASAXXAXMSAMSSMSAMXAMXMMMXSAMXAASMSSXSAMMSAXSMSAAAASAMXSMXXAXXXMAMMMMSXMAAMMMXAAXXAMXXMASAAMXMAMAMX
SASMAMMMMMASAMXMMXSAAXXMXMXMASXSMSMMSAMSSSSMAASMXMASMAAAMASMAMAAXMAMXSSMMMAXAAMXMXMMMXAMSSSMSAMXAAMSSSMMSXSXAXMAMXMMAXXMSMMMMAXSAAXASXSMMAXX
MASMMMAXAXAXXMXSXXMAMSAMMSXSAMAAAAAAXAMAAMMMXMAAAXAAXAAMMAMMAXASMXXMSMASMMMMMMMAXAASAMXMAMAXMXSMMXMAAAAAAASMMMMAMMSSXMXMAMAAXSMMXXXSAMXASMMS
AASAMMSXMAMSSMASMMMAXMASAAXMASMMSMMMMSMMSMSSSXMSMMMSAMMSXASXMSMXMAAMASAMXAXSMXSMMSXXMXSAMXXMSSMMXMMMSMMMMAMAMASXMAXMASMSMSSSXMAMAMSAXSAMXSAA
MASAMAXXXMAAAMAXAMXXXSAMMMMMMMXXXXXSAXAXMAAAMXMAXXXMAMAMMAMXAAAAMSSMAMMXMMMMAAXMAMMMMAMAXXMASXAXMXAAXMAMXASAXMAAASMMMMMAXAXXMXAMASAAMXXXAMMM
SASAMASASAMSSMASXMMSAMMMMASXMASMXMMMASAMXMMSMXSAXSMSAMASMMSMSMMMMAAMAMXSAMSSMMSMASAAMAMAMXASMMMMMSMMSASAMASASMMSMXAAAMMMMXMSMSSMXSMAAMMMXSAX
AAXAMXSAMMAAAMASAAAMXXXASASAMMAMAMAMMMMMMSMMMMMMSMASXSASAAAAAXAMMSSMSAAMAMAAXXXMAXMMSXSAMXSAXSAAXAAXMAXAAMMMMAAMASMMMSXXXAAXMAAXXMXMXAAMAMMS
MXSSSMMMMXMSXMASMMMSMMSXSASXMMMSXSXXXAXAAAAAMAAXAMMMAMAMMMMMMMMSAMMAMMXXMMSSMMAMSSMXAMMXSMMSXMASMMSMMAMXXSASXMMMAMMXAAMSMMXXMSSMXMASMMMSXSAS
XMMAAASAMXXAMMXXAMAXAAMXMAMAASXMAXMASMSMMXSMSXSXSSMMXMSMMSXXAAXMAXMXMMMSMAAAASMXAAMMAMSASXMXMSAMXAXXMSMMASAMXMAXSMSXMSAMXSAMMAAAASASMMMAAMAS
MMMMMSXMSASMSXSSSMAMSXSAMAMMMSAMXMXASAAMMMMASAMXMAMMMAXAAAMSSSSSMMAAAASAMXSSXMMXSMMSAMMMSASAMXMMMSMMMXAXAMXMSSXSAAXAMXXSAMASMSSSMXAMAASMMMAM
MASAMXMXSAMXAAXAMMXXMASASXSSSSMMMXMXSXXSAAMAMAMMAMASMMXMAMXAMXMASMXXSMSASMMMMASAMAXMAMAXXMMASMMAAAAAASAMXSAXAAMSMMSXMAXMASAMAXAAAMSMSMSAAMAS
SASMSAAAMASMMMMAMXMASAMXMAAXASXASAAMMXASMSMAMXMAMSAXSMAMXSMMMSMMMMAXXXSAMAAAXXMASMMMASMSSXSAMASMSSSMXMAMAXXSMXMXXASMMMXSAMXMMMMMXMMAXASMMSAS
MASXSMSXMSMMAXMXMASMMMSSMMMMMMMMSMXAAXMSXAMSMSXXAMXXMMMSMMASAMMXSMMMSAXMASXSSMMXXMASXAMXAMMMSXMMMAXMASMMSSMMXMXXMXXAXAAMASXAMAXMXMMSMMMXAMAS
MSMAMAMMXXASMSMXSMMXASAMXMXXAASXMMSMMMXMXMXMAMMSMMSMSAMAMMAMASXAXAAAMMMSXMAMMXSXMXMMXSASAMAXMAMSMMMSAMAAAAAMXSMMSASMMMMSMMMMSMSMXSAMXAXMMMAS
SAMXMXMMAMAMXXMAMAASMMMMSXMSSSSXAASAMSXMXXAMAMAAXMMASXXXSMXXAMMSSSMSSXXMASMXAASMXAAAMXMSASXXSAMXAAAMAMMMMSSMMMASXMAAXAAAXMAXAMAMXMASMMSSSMSS
AMMASXAMMSMSMSMSSSMXMASAMMMAMAMMMMSAAMAMSMMSSMSMSAMXMSMAMXSMXMMAXXMAMAMXMMXMMXSASMSSXSXSAMAASAMXSMSSMSSSMXXMAXSMAXSMMMSSSSSSSSSSXSAMAXAAAMAS
MXMAXMAXXAASAMAAAMMMSAMASAMASASXMASMMXAMXAXAXAMXMMMAAAMAMAXAAMMMSMMMSSXXAXAAMMMMMAAAASAMSMMMSASAAXXAAAXAXSSSSSMSSMXXAMMAMXAXXAMAASMSSMMSMMAS
XSMAXMSSMSMMAMMXSMAMMXXXSAMASXSXMXXASMXMMMMMXSSMAAXASMSSMMSSMSAMXXSMAMXMASMXSASXMMMMMMAMAXXXXAMMSMXMMMSMXMAAMXAAMAASXSMMMMMMMMMMMMAAXAXMAMMM
AMMAMSAAXMASXMXAMMASMMSMMMSXMAXAXAXAMMMSSMAXSMAMSMSAMXXMAXAAXSASMAMMAMASXSAASXSAXXXXSSSMMSSSMMMXMAMXMXAXMMMMMMMMXSXSASAMASAAXAAAAXMASMMMSSSM
AMAXMMASMXXMASAXMASAAASXAAMASMSXMMMMSXAAASMXXMXMAMMAMMSSMMSSMSAMMSMSXSMSAMMMSSSXMASXXAMXXAAAAASMXAAAMMXSAAAAAXAXXMSMASXMASMSMASXSSMMXAXXAAAS
SSMSMMMMMXSSXMASMMMSMMMMXMSAMXMAAXAAAMMSMMMXXSMMXMSAMXAASAMXMMSMXXAAAXAMAMAMMASXMMXMXMMMMMSMSMSASMSXSAXMMSSSSSMSAXXMAMAMXMXXAMXXAAXAXMMMMSMM
XAASASAAXSAMXMASAAXAXMASAXMXSASXMMMSSSXMASMSMAASAAXMASMAMSMXXAAXAMXMMMSMASASMAMMMAXSMXAXAAMMMXMAMAXAXMMXXMAXAAASMMSMXSMMASMMSMSMSMMMMSASAMXS
MMMSAMMSSMMMXMASMMXMMSAMXMASMAXXAXXAAMXSMAAAMXMMAXXXMMXSSMSMMSSMMAAXMAASASAMMAXAMSSMASASMMSASMMAMXMMMSAMSMSMSMMMMSMXAMAMASMAAXAMMXAAAAAMXSAS
SMXMAMAMXXXMAMASAMXSAMMSSMMMMAMMSMMXMAMMSMSXSMSSMMSSSMAXAAAXAAAMSSXSASMMMMMSSSSSSMAMXMAAXAXXXAXXXAASAMASXAXAXAAAMASMXSAMMSMSMSMAXASMSSMSXMAS
SAXSAMXSASMSASASAMXMASAAXAAXMAMAAXMAMSMAXXXAMXAASXXAMMSSMSMSSMSMMAAAMXXAMSMMAAXMAMAMXMXMMMSSSSMSSSXMASXMMSMSMSXMSAMMXSXSXXAAAMXMSMXAMMMXAMAM
MXMMMAAMASASASMSAMSMSSMMSSMSMAMSSMMMXMMSMMMMAMSSMXMXMAXXAXXAASAAMMMMXMMXXAAMMMMMAMXSSMAXAXMAAAXAAXXSMMMMAXAXAAXXMXSMMMMMMMSMSMAMMXMSMSXSXMAS
MAMXSMMMAMMMAMASXMAXAXMXMAMAMAXMAMXAMMAMAXASAAMAMMMSMMSMXMMXMMSXMXXMXMASXSMMXSAMXXSAXSASXSSMMMMMSMMXASAMXMMMMMSXAMXMAAAMAMXMMMXSMAXXAMXMAMAX
SMSAXAASMSSMMMAMASMMMSSSSSMSSMSMASXSXMAMMSMSAXSAMAAAAMXXSXAMSAMXMASXSMMSAMAMAMAXASAMXMMXAXAAMXMXMAMSXMAXXAXASMMMSMAMSXMSSSMMAMXMMMSMAMASXMSS
XAMMSSMSAAMXXMSSMXXXXAAMAXAAAXAMMMMXAMASAMXXMAXAMMXXSMASXMXSAASAMAMMAAMMXMSMMSSMMSSXMSSSMSSMMMSMSAMMXSAMSMMMXAAAASMXMXMMXAMMMMAMAMXMAMMSAAXA
MMMMAMMMMMSSSXAAXXMMMMSMAMMMMXXMAAAXXMAMMSSMMSSSMSXMMMMMAAXXXMMAMASXSXMAXXXAXAMAXXASAMXAXAAAMAAXSMSAAMAMAASMSSMSXMXAMASXSXMASMMSXSASASXSMMMM
XXAMSSMXAXAASMSSMMMAAAAMMMXXXMSXSMXSAMXSMAXAXMAXAAMSASXSSMSMSSSXMXSXMAMMSMSMMXSXMAMMXXXMMSSMMMXXXAMMMSXSMSMAAMMXXMSXSAXAMASASAXAAXASAXMXSAAX
SSMSAAMSSMMMMMAAXAXSXXSSSMSSMMSAAAASAMASMSMMMMAMMMXSASAAMAAASAMXMASMSAMSAAAASMMMSAXSSSSSMXMAASXSMMMSXMXMMMMMMXXAMMMAMMMSMAMASMMMSMXMXMMAMXMS
AAXXMMMAMXAMXMXMMSMXAAMAMAMXAAMSMMMXAMASMAASAMXSASAMMMMMMXASMXSASMXAXASMMMMXMAAAXAXXAAAMMAMXMAAXAXASAMMMASXSMMMMSAMXMXAMMXSXSXMAXAMXXXMASAXM
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MAASXSSXXMMAXAAAAXXMSXAMSMMSAXSMMMXMXMMMXAAASXMXMMMMMXSAMXSMMMSMMMSMSSSSSXMMSAMXXXMAMMSMMSMSMSASXSXMMAMMSMMMAMXAXSAMXMSAMXAXMASXMMMSAMXMSSMM
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AXMASMAXXAAMAAAAAXXMMMXMSSMSMASMMSAMAMXXAAMXMASXSSSMXSXMMASAMAXXMASMMMMMSAMXSMSMAMAAAAASAMXMMMXMMMAASXSMSSSMMMASAAAMMSMAMAMSXSMSMMASMMAXXAMX
MAMXXMASMMSMSSSXMMMMSSSXAMAXMAMXMAMMAMMSMMMASMXAMXMXAMXMMMXMASXXXMAXAAAXSMSXSASMSMSMSSMSASXSMMMSMMSMSMSAMAMXXSASMSMSMAAASAMXAXAAAMAMASMMSAMX
XSSXSAMXAXMAXXMASXSAAAMMMSSMMMSMSAMXXMAAAASXSXMMMAAMMSAXAMAAAXMASXAXSMSMSXSXMAMXXAXAMMXXAMASAMASAAXAXAMAMAMXXMXMAMAAXSSMSASMMMSMSMMSXMAXSMMX
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MMAMMAMAAXMAMMMSSSSXSAMXXAMMAMMSMAMAXXXXXSMSMAXSXSASMMASMMSMSASASMXAMAAAMAMXSAXAAXSSMXSMAMMSXMXXAAAXMXSXSAXAAMSMMAAXAAAMMMSXMASXMASXMSXXXAMX
AMAXMAXXMASAXAMXAAAASAMSSSXSSSMMMSSXMXXXAMAMXMSAAXASMSMMAAAASASASAMSSSMSMXMXSXXSMMMAMAMMAXMAMXASMXXSXAMAXXXSMMAAMSSSXSMSXAXAMASASXXAXXMMSSMM
SASMSMSMXAMMMSXMAMMMMAMAAAAAAAAMAMAMXMMMXMXSAMMMSMASAAXXXMMMMMMMMAMMAXAXAASXMXXAASXSMAXMASMMMMMMMSMMMXSMSSMMXSSXMXAXMXAXMMSXSAMAMASMMMMAAXSA
ASMAMXAXSXXSAXXSAMAXSXMMSMMMSSMMXSAMAAAASMMMMSMAXMAMXMSASMXXXAAAXXMAMMMMMMSAASMMMMAXSXSMMMMAAAXAAAAASAMXAXXAXMASMMMMMMXMAMAXAMMAMXMMAAMSSMAS
SXMAMSSMSAAMASMMASXMMAMXMXSMXMMAMSASMSMXSAAMXAMXSMMSMMAXMASMSSSSSSXAXAXAAMMMMMXSAMXMXMSAAASMSMSMSXSAMAXMAXSMMXAAXAMAASXMSAXAMSSSSXASXMXAXAMX
AXMSXXAAMMMMXSASAMXXSAMASXSAAXMAXXMMXAMMMXMMXMSMMAMMMXSAMXSXMXAMAMSSSXSSSXMSAXMAMXMMMASXMMSXMASAMXXMMMSXSAXMASMSSXXMSSMAMMMMXAAAMXXMAXMXSXXM
MASXMSMMMXXXAMMMXMMMMASAMXMMSMSMSXSSSSMAMMSSSXSMSAMAAXMMSMMAMMXMAMAXMAXXXAASMSXMASAAAXMSSMSAMXSASMSMSAAAAMMMAXSAXXMXMMMAAAAMMMSMAMXMAMSASAMX
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@ -1,163 +0,0 @@
package main
import (
"bufio"
_ "embed"
"fmt"
aoc "go.sour.is/advent-of-code"
)
// var log = aoc.Log
func main() { aoc.MustResult(aoc.Runner(run)) }
type result struct {
valuePT1 int
valuePT2 int
}
type record struct {
p aoc.Point[int]
d [2]int
}
func (r result) String() string { return fmt.Sprintf("%#v", r) }
func run(scan *bufio.Scanner) (*result, error) {
m := make([][]rune, 0, 1000)
var records []record
var records2 []record
for scan.Scan() {
txt := scan.Text()
m = append(m, []rune(txt))
}
for x, row := range m {
for y, c := range row {
if c == 'X' {
rs := search1(record{
p: aoc.Point[int]{x, y},
}, m)
records = append(records, rs...)
}
if c == 'A' {
rs := search2(record{
p: aoc.Point[int]{x, y},
}, m)
if len(rs) == 2 {
records2 = append(records2, rs...)
}
}
}
}
for _, r := range records2 {
fmt.Println(r)
}
return &result{len(records), len(records2)/2}, nil
}
func search1(r record, m [][]rune) []record {
var ds = [][2]int{
{1, 0}, // up
{0, 1}, // right
{-1, 0}, // down
{0, -1}, // left
{1, 1}, // up-right
{1, -1}, // up-left
{-1, 1}, // down-right
{-1, -1}, // down-left
}
var records []record
for _, d := range ds {
p := r.p
if !check1(m, p, d) {
continue
}
records = append(records, record{
p: p,
d: d,
})
}
return records
}
func check1(m [][]rune, p aoc.Point[int], d [2]int) bool {
for _, r := range []rune{'M', 'A', 'S'} {
p[0] += d[0]
p[1] += d[1]
if p[0] < 0 || p[0] >= len(m) {
return false
}
if p[1] < 0 || p[1] >= len(m[0]) {
return false
}
if m[p[0]][p[1]] != r {
return false
}
}
return true
}
func search2(r record, m [][]rune) []record {
var ds = [][2]int{
{1, 1}, // up-right
{1, -1}, // up-left
{-1, 1}, // down-right
{-1, -1}, // down-left
}
var records []record
for _, d := range ds {
p := r.p
if !check2(m, p, d) {
continue
}
records = append(records, record{
p: p,
d: d,
})
}
return records
}
func check2(m [][]rune, p aoc.Point[int], d [2]int) bool {
p0 := p[0] - d[0]
p1 := p[1] - d[1]
if p0 < 0 || p0 >= len(m) {
return false
}
if p1 < 0 || p1 >= len(m[0]) {
return false
}
if m[p0][p1] != 'M' {
return false
}
p0 = p[0] + d[0]
p1 = p[1] + d[1]
if p0 < 0 || p0 >= len(m) {
return false
}
if p1 < 0 || p1 >= len(m[0]) {
return false
}
if m[p0][p1] != 'S' {
return false
}
return true
}

View File

@ -1,41 +0,0 @@
package main
import (
"bufio"
"bytes"
"testing"
_ "embed"
"github.com/matryer/is"
)
//go:embed example.txt
var example []byte
//go:embed input.txt
var input []byte
func TestExample(t *testing.T) {
is := is.New(t)
scan := bufio.NewScanner(bytes.NewReader(example))
result, err := run(scan)
is.NoErr(err)
t.Log(result)
is.Equal(result.valuePT1, 18)
is.Equal(result.valuePT2, 9)
}
func TestSolution(t *testing.T) {
is := is.New(t)
scan := bufio.NewScanner(bytes.NewReader(input))
result, err := run(scan)
is.NoErr(err)
t.Log(result)
is.Equal(result.valuePT1, 2536)
is.Equal(result.valuePT2, 1875)
}

View File

@ -1,28 +0,0 @@
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

File diff suppressed because it is too large Load Diff

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@ -1,83 +0,0 @@
package main
import (
"bufio"
_ "embed"
"fmt"
"sort"
"strings"
aoc "go.sour.is/advent-of-code"
)
// var log = aoc.Log
func main() { aoc.MustResult(aoc.Runner(run)) }
type result struct {
valuePT1 int
valuePT2 int
}
func (r result) String() string { return fmt.Sprintf("%#v", r) }
func run(scan *bufio.Scanner) (*result, error) {
ordering := make(map[int]aoc.Set[int])
var updates [][]int
for scan.Scan() {
txt := scan.Text()
if txt == "" {
break
}
var key, val int
_, err := fmt.Sscanf(txt, "%d|%d", &val, &key)
if err != nil {
return nil, err
}
if _, ok := ordering[key]; !ok {
ordering[key] = aoc.NewSet[int]()
}
s := ordering[key]
s.Add(val)
}
var sum int
var sum2 int
outer:
for scan.Scan() {
txt := scan.Text()
arr := aoc.SliceMap(aoc.Atoi, strings.Split(txt, ",")...)
for i, v := range arr {
m, ok := ordering[v]
if (i > 0 && !ok) || !m.ContainsAll(arr[:i]...) {
sort.SliceStable(arr, func(i, j int) bool {
if a, ok := ordering[arr[i]]; ok && a.Has(arr[j]) {
return true
}
if b, ok := ordering[arr[j]]; ok && b.Has(arr[i]) {
return false
}
return false
})
sum2 += arr[len(arr)/2]
continue outer
}
}
sum += arr[len(arr)/2]
updates = append(updates, arr)
}
return &result{sum, sum2}, nil
}

View File

@ -1,41 +0,0 @@
package main
import (
"bufio"
"bytes"
"testing"
_ "embed"
"github.com/matryer/is"
)
//go:embed example.txt
var example []byte
//go:embed input.txt
var input []byte
func TestExample(t *testing.T) {
is := is.New(t)
scan := bufio.NewScanner(bytes.NewReader(example))
result, err := run(scan)
is.NoErr(err)
t.Log(result)
is.Equal(result.valuePT1, 143)
is.Equal(result.valuePT2, 123)
}
func TestSolution(t *testing.T) {
is := is.New(t)
scan := bufio.NewScanner(bytes.NewReader(input))
result, err := run(scan)
is.NoErr(err)
t.Log(result)
is.Equal(result.valuePT1, 7307)
is.Equal(result.valuePT2, 4713)
}

View File

@ -1,10 +0,0 @@
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View File

@ -1,130 +0,0 @@
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View File

@ -1,147 +0,0 @@
package main
import (
"bufio"
_ "embed"
"fmt"
aoc "go.sour.is/advent-of-code"
)
// var log = aoc.Log
func main() { aoc.MustResult(aoc.Runner(run)) }
type result struct {
valuePT1 int
valuePT2 int
}
func (r result) String() string { return fmt.Sprintf("%#v", r) }
func run(scan *bufio.Scanner) (*result, error) {
var start aoc.Point[int]
var m [][]rune
for scan.Scan() {
txt := scan.Text()
if txt == "" {
continue
}
m = append(m, []rune(txt))
for i, c := range txt {
if c == '^' {
start = aoc.Point[int]{len(m) - 1, i}
}
}
}
sum, positions, _ := runPT1(m, start)
loops := runPT2(m, start, positions)
return &result{sum, loops}, nil
}
func isOutOfBounds(p, topRight, bottomLeft aoc.Point[int]) bool {
return p[0] < topRight[0] ||
p[0] > bottomLeft[0] ||
p[1] < topRight[1] ||
p[1] > bottomLeft[1]
}
func printMap(m [][]rune, o aoc.Point[int]) {
for i, row := range m {
if i == o[0] {
row[o[1]] = 'O'
}
println(string(row))
}
println()
}
func runPT1(m [][]rune, start aoc.Point[int]) (int, []aoc.Point[int], bool) {
m = copyMap(m)
topRight := aoc.Point[int]{0, 0}
bottomLeft := aoc.Point[int]{len(m) - 1, len(m[0]) - 1}
directions := []aoc.Point[int]{
{-1, 0}, // up
{0, 1}, // right
{1, 0}, // down
{0, -1}, // left
}
d := 0
current := start
var loopStart [3]int
var paths = aoc.NewSet[[3]int]()
for !isOutOfBounds(current, topRight, bottomLeft) {
m[current[0]][current[1]] = 'X'
next := current.Add(directions[d])
if isOutOfBounds(next, topRight, bottomLeft) {
break
}
if m[next[0]][next[1]] == '#' {
d = (d + 1) % 4
pt := [3]int{current[0], current[1], d}
if paths.Has(pt) {
if loopStart == pt {
return 0, nil, true
}
if loopStart == [3]int{} {
loopStart = pt
}
}
paths.Add(pt)
continue
}
current = next
}
var sum int
var points []aoc.Point[int]
for y, row := range m {
for x, v := range row {
if v == 'X' {
points = append(points, aoc.Point[int]{x, y})
sum++
}
}
}
return sum, points, false
}
func runPT2(m [][]rune, start aoc.Point[int], points []aoc.Point[int]) int {
sum := 0
for _, p := range points {
cm := copyMap(m)
cm[p[0]][p[1]] = '#'
_, _, isOOB :=runPT1(cm, start)
if !isOOB {
printMap(cm, start)
sum++
}
}
return sum
}
func copyMap(m [][]rune) [][]rune {
newM := make([][]rune, len(m))
for i, row := range m {
newM[i] = make([]rune, len(row))
copy(newM[i], row)
}
return newM
}

View File

@ -1,43 +0,0 @@
package main
import (
"bufio"
"bytes"
"testing"
_ "embed"
"github.com/matryer/is"
)
//go:embed example.txt
var example []byte
//go:embed input.txt
var input []byte
func TestExample(t *testing.T) {
is := is.New(t)
scan := bufio.NewScanner(bytes.NewReader(example))
result, err := run(scan)
is.NoErr(err)
t.Log(result)
is.Equal(result.valuePT1, 41)
is.Equal(result.valuePT2, 6)
}
func TestSolution(t *testing.T) {
is := is.New(t)
scan := bufio.NewScanner(bytes.NewReader(input))
result, err := run(scan)
is.NoErr(err)
t.Log(result)
is.Equal(result.valuePT1, 5329)
is.True(result.valuePT2 > 897)
is.Equal(result.valuePT2, 0)
}

View File

@ -73,17 +73,3 @@ func toList[T any](seq iter.Seq[T]) []T {
}
return list
}
func TestGraphBFS2(t *testing.T) {
is := is.New(t)
var adjacencyList = map[int][]int{
1: {2, 3},
2: {4},
3: {5, 6},
}
g := aoc.Graph(aoc.WithAdjacencyList[int](adjacencyList))
is.Equal(toList(g.BFS(1)), []int{1, 2, 3, 4, 5, 6})
}

9
set.go
View File

@ -23,15 +23,6 @@ func (m *Set[T]) Has(a T) bool {
return ok
}
func (m *Set[T]) ContainsAll(other ...T) bool {
for _, a := range other {
if !m.Has(a) {
return false
}
}
return true
}
type defaultMap[K comparable, V any] struct {
m map[K]V
d V