day 3 part 1

src/main/scala/Day03.scala

@@ -0,0 +1,40 @@
+import scala.util.Success
+import scala.util.Failure
+import scala.util.boundary
+
+
+object Day03 extends Solution:
+    override def part_01() = 
+        val file = read_input("03") match
+            case Success(f) => f
+            case Failure(ex) =>
+                return "Error opening file: " + ex.getMessage()
+
+        var sum = 0
+
+        for line <- file.getLines() do
+            val char_count = line.length()
+            val first_segment = line.slice(0, char_count / 2)
+            val second_segment = line.slice(char_count / 2, char_count)
+
+            val set = first_segment.toList.toSet
+            val res_char = second_segment.toCharArray().find((char) => set.contains(char)) match
+                case Some(c) => c
+                case None =>
+                    return "Error: Input didn't have a repeating character"
+
+            sum += char_to_value(res_char)
+
+
+        s"part 1: $sum"
+
+    override def part_02() = ""
+
+
+    private def char_to_value(c: Char): Int =
+        if c >= 'a' && c <= 'z' then c.toInt - 96
+        else if c >= 'A' && c <= 'Z' then c.toInt - 64 + 26
+        else
+            println(s"fed an invalid character: $c")
+            -1
+    

src/main/scala/Main.scala

@@ -4,5 +4,5 @@ import scala.util.Random
 // Number guessing game
 @main def hello: Unit =
     println("Advent of code 2022 with Scala")
-    println(Day02.part_01())
-    println(Day02.part_02())
+    println(Day03.part_01())
+    println(Day03.part_02())