fix missing

2024/go/day11/day11.go

@@ -0,0 +1,76 @@
+package day11
+
+import (
+	"adventofcode2024/utils"
+	"fmt"
+	"strconv"
+	"strings"
+)
+
+func Part1(input string) int {
+	stones := strings.Fields(input)
+	for i := 0; i < 25; i++ {
+		n_stones := []string{}
+		for _, stone := range stones {
+			switch {
+			case stone == "0":
+				n_stones = append(n_stones, "1")
+			case len(stone)%2 == 0:
+				d1 := strconv.Itoa(utils.MustAtoi(stone[0 : len(stone)/2]))
+				d2 := strconv.Itoa(utils.MustAtoi(stone[len(stone)/2:]))
+				n_stones = append(n_stones, d1)
+				n_stones = append(n_stones, d2)
+
+			default:
+				n_stones = append(n_stones, fmt.Sprintf("%d", utils.MustAtoi(stone)*2024))
+			}
+		}
+		stones = n_stones
+	}
+	return len(stones)
+}
+
+func Part2(input string) int {
+	stones := strings.Fields(input)
+	smap := make(map[string]int)
+	smap2 := make(map[string]int)
+
+	for _, stone := range stones {
+		smap[stone] = 1
+	}
+	for i:=0;i<75;i++ {
+		for k, v := range smap {
+			switch {
+			case k == "0":
+				smap2["1"] = smap2["1"] + v
+			case len(k)%2 == 0:
+				d1 := strconv.Itoa(utils.MustAtoi(k[0 : len(k)/2]))
+				d2 := strconv.Itoa(utils.MustAtoi(k[len(k)/2:]))
+				smap2[d1] += v
+				smap2[d2] += v
+			default:
+				k2 := fmt.Sprintf("%d", utils.MustAtoi(k)*2024)
+				smap2[k2] += v
+			}
+		}
+		smap = CopyMap(smap2)
+		smap2 = make(map[string]int)
+	}
+	count := 0
+	for _, v := range smap {
+		count += v
+	}
+	return count
+}
+
+func CopyMap(original map[string]int) map[string]int {
+    // Create a new map to hold the copy
+    copied := make(map[string]int)
+    
+    // Copy each key-value pair from the original map to the new map
+    for key, value := range original {
+        copied[key] = value
+    }
+    
+    return copied
+}

2024/go/day11/day11_test.go

@@ -0,0 +1,17 @@
+package day11
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/require"
+)
+
+func TestPart1(t *testing.T) {
+	r := Part1("125 17")
+	require.Equal(t, 55312, r)
+}
+
+func TestPart2(t *testing.T) {
+	r := Part2("125 17")
+	require.Equal(t, 55312, r)
+}

2024/go/day11/input.txt

@@ -0,0 +1 @@
+3 386358 86195 85 1267 3752457 0 741