Day 11. part 1.

This commit is contained in:
Borna Rajković 2024-12-11 10:04:55 +01:00
parent 2fdf520e2b
commit e8e29e2701
6 changed files with 84 additions and 0 deletions

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@ -33,3 +33,6 @@ var Day09Data string
//go:embed day_10/data.txt
var Day10Data string
//go:embed day_11/data.txt
var Day11Data string

1
day_11/data.txt Normal file
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@ -0,0 +1 @@
64554 35 906 6 6960985 5755 975820 0

1
day_11/example_data.txt Normal file
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@ -0,0 +1 @@
125 17

57
day_11/solution.go Normal file
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@ -0,0 +1,57 @@
package day_11
import (
"strconv"
"strings"
)
// task:https://adventofcode.com/2024/day/11
func SolveBasic(input string) int {
stones := load(input)
for i := 0; i < 25; i++ {
stones = blink(stones)
}
return len(stones)
}
// task:https://adventofcode.com/2024/day/10#part2
func SolveComplex(input string) int {
return 0
}
func blink(before []uint64) []uint64 {
after := make([]uint64, 0, len(before))
for _, stone := range before {
if stone == 0 {
after = append(after, 1)
} else if val := fromUint(stone); len(val)%2 == 0 {
after = append(after, parseUint(val[:len(val)/2]))
after = append(after, parseUint(val[len(val)/2:]))
} else {
after = append(after, stone*2024)
}
}
return after
}
func fromUint(stone uint64) string {
return strconv.FormatUint(stone, 10)
}
func load(input string) []uint64 {
stones := []uint64{}
for _, substring := range strings.Split(input, " ") {
stones = append(stones, parseUint(substring))
}
return stones
}
func parseUint(substring string) uint64 {
if val, err := strconv.ParseUint(substring, 10, 64); err == nil {
return val
} else {
panic(err)
}
}

17
day_11/solution_test.go Normal file
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@ -0,0 +1,17 @@
package day_11_test
import (
"advent_of_code_2024/day_11"
_ "embed"
"testing"
)
//go:embed example_data.txt
var ExampleData string
func TestBasicSolutionExample(t *testing.T) {
result := day_11.SolveBasic(ExampleData)
if result != 55312 {
t.Fatalf("Expected 55312 received %d", result)
}
}

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@ -11,6 +11,7 @@ import (
"advent_of_code_2024/day_08"
"advent_of_code_2024/day_09"
"advent_of_code_2024/day_10"
"advent_of_code_2024/day_11"
_ "embed"
"fmt"
"os"
@ -60,6 +61,10 @@ func main() {
fmt.Printf("Day 10. Basic: %d\n", day_10.SolveBasic(Day10Data)) //
case "10-complex":
fmt.Printf("Day 10. Complex: %d\n", day_10.SolveComplex(Day10Data)) //
case "11-basic":
fmt.Printf("Day 11. Basic: %d\n", day_11.SolveBasic(Day11Data)) //
case "11-complex":
fmt.Printf("Day 11. Complex: %d\n", day_11.SolveComplex(Day11Data)) //
}
}