feat: 2023/1 2023/2/1

2023/Day1/go.mod

@@ -0,0 +1,3 @@
+module AOC/Day1
+
+go 1.21.4

2023/Day1/main.go

@@ -0,0 +1,116 @@
+package main
+
+import (
+	"fmt"
+	"log"
+	"os"
+	"strconv"
+	"strings"
+)
+
+
+func findFirstNumberInString(input string) string {
+    for _, c := range input {
+        if string(c) >= "0" && string(c) <= "9" {
+            return string(c)
+        }
+    }
+    return ""
+}
+
+func numbersMap() map[string]string {
+    return map[string]string{
+        "one": "1",
+        "two": "2",
+        "three": "3",
+        "four": "4",
+        "five": "5",
+        "six": "6",
+        "seven": "7",
+        "eight": "8",
+        "nine": "9",
+    }
+}
+
+func findFirstNumberIncludingSpelledOutNumbers(input string) (result string) {
+    numbers := numbersMap()
+    spelledIndex := int(^uint(0) >> 1)
+    for spelled, number := range numbers {
+        i := strings.Index(input, spelled)
+        if i != -1 && i < spelledIndex {
+            result = number
+            spelledIndex = i
+        }
+    }
+
+    for i, c := range input {
+        if string(c) >= "0" && string(c) <= "9" {
+            if i < spelledIndex {
+                return string(c)
+            } else {
+                return result
+            }
+        }
+    }
+    return result
+}
+
+func findFirstNumberIncludingSpelledOutNumbersReversedOrder(input string) (result string) {
+    numbers := numbersMap()
+    spelledIndex := -1
+    for spelled, number := range numbers {
+        i := strings.LastIndex(input, spelled)
+        if i != -1 && i > spelledIndex {
+            result = number
+            spelledIndex = i
+        }
+    }
+
+    for i, c := range input {
+        if string(c) >= "0" && string(c) <= "9" && i > spelledIndex{
+            spelledIndex = i
+            result = string(c)
+        }
+    }
+    return result
+}
+
+func reverse(input string) (result string) {
+    for _, c := range input {
+        result = string(c) + result
+    }
+    return result
+}
+
+func main() {
+	content, err := os.ReadFile("input.txt")
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	lines := strings.Split(string(content), "\n")
+	sum := 0
+
+	for _, line := range lines {
+        if (line == "") {
+            continue
+        }
+        // Day 1
+        // value := findFirstNumberInString(line)
+        // value += findFirstNumberInString(reverse(line))
+
+        // Day 2
+		value := findFirstNumberIncludingSpelledOutNumbers(line)
+        value += findFirstNumberIncludingSpelledOutNumbersReversedOrder(line)
+        fmt.Println(line, value)
+        if len(value) != 2 {
+            fmt.Println("Number couldn't be found" + line)
+        }
+		number, err := strconv.Atoi(value)
+		if err != nil {
+			fmt.Println("Number couldn't be converted" + value)
+		}
+		sum += number
+	}
+    fmt.Println(sum)
+}