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feat(aoc2024): complete day 3 part 2
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This commit is contained in:
xuu 2024-12-03 16:15:53 -07:00
parent 127257c494
commit 6a17669107
Signed by: xuu
GPG Key ID: 8B3B0604F164E04F
2 changed files with 11 additions and 32 deletions
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34
aoc2024/day03/main.go
View File

@ -28,25 +28,22 @@ func run(read io.Reader) (*result, error) {
lexer := Lexer(read) lexer := Lexer(read)
active := true active := true
for typ, _ := range lexer.Iter() { for lexer.NextTok() {
// fmt.Println(typ, string(token)) switch lexer.token {
switch { case "TokMUL":
case typ == "TokMUL":
if m := readMul(lexer); m != 0 { if m := readMul(lexer); m != 0 {
sum += m sum += m
if active { if active {
sum2 += m sum2 += m
} }
} }
case typ == "TokDONT": case "TokDONT":
if readDont(lexer) { if readDont(lexer) {
println("don't()", active)
active = false active = false
} }
case typ == "TokDO": case "TokDO":
if readDo(lexer) { if readDo(lexer) {
println("do()", active)
active = true active = true
} }
} }
@ -57,31 +54,15 @@ func run(read io.Reader) (*result, error) {
func Lexer(in io.Reader) *lexer { func Lexer(in io.Reader) *lexer {
seq := func(yield func(rune) bool) { seq := func(yield func(rune) bool) {
defer func() {
if err := recover(); err != nil {
fmt.Println("ERR", err)
return
}
fmt.Println("NO DEFER AND NO PANIC??")
}()
buf := make([]byte, 256) buf := make([]byte, 256)
s, _ := in.Read(buf) s, _ := in.Read(buf)
buf = buf[:s] buf = buf[:s]
for len(buf) > 0 { for len(buf) > 0 {
for i, r := range string(buf) { for _, r := range string(buf) {
println(i, r)
if i >= 72 {
fmt.Println("START")
}
if !yield(r) { if !yield(r) {
return return
} }
if i >= 72 {
fmt.Println("STOP")
}
} }
s, _ := in.Read(buf) s, _ := in.Read(buf)
buf = buf[:s] buf = buf[:s]
@ -153,7 +134,6 @@ func (l *lexer) NextTok() bool {
l.token = "TokMUL" l.token = "TokMUL"
if string(l.literal) != "mul" { if string(l.literal) != "mul" {
l.token = "TokILLEGAL" l.token = "TokILLEGAL"
return false
} }
return true return true
case 'd': case 'd':
@ -165,7 +145,6 @@ func (l *lexer) NextTok() bool {
l.token = "TokDO" l.token = "TokDO"
default: default:
l.token = "TokILLEGAL" l.token = "TokILLEGAL"
return false
} }
return true return true
@ -230,7 +209,6 @@ func readMul(lex *lexer) int {
if !lex.NextTok() || lex.token != "TokRPAREN" { if !lex.NextTok() || lex.token != "TokRPAREN" {
return 0 return 0
} }
fmt.Println(a, "*", b)
return a * b return a * b
} }

9
aoc2024/day03/main_test.go
View File

@ -26,9 +26,10 @@ func TestExample(t *testing.T) {
t.Log(result) t.Log(result)
is.Equal(result.valuePT1, 161) is.Equal(result.valuePT1, 161)
// result, err = run(bytes.NewReader(example2)) result, err = run(bytes.NewReader(example2))
// is.NoErr(err) is.NoErr(err)
// is.Equal(result.valuePT2, 48) is.Equal(result.valuePT1, 161)
is.Equal(result.valuePT2, 48)
} }
func TestSolution(t *testing.T) { func TestSolution(t *testing.T) {
@ -40,5 +41,5 @@ func TestSolution(t *testing.T) {
t.Log(result) t.Log(result)
is.True(result.valuePT1 < 186942148) // first attempt too high is.True(result.valuePT1 < 186942148) // first attempt too high
is.Equal(result.valuePT1, 184122457) is.Equal(result.valuePT1, 184122457)
//is.Equal(result.valuePT2, 0) is.Equal(result.valuePT2, 107862689)
} }