day 1 puzzle 2

src/day1/Puzzle2.scala

@@ -0,0 +1,61 @@
+package day1
+
+import scala.io.{BufferedSource, Source}
+
+object Puzzle2 {
+  val DIGITS: Array[String] = Array(
+    "one",
+    "two",
+    "three",
+    "four",
+    "five",
+    "six",
+    "seven",
+    "eight",
+    "nine"
+  )
+  def loadInput(path: String): Int = {
+    var sum: Int = 0
+    val source: BufferedSource = Source.fromFile(path)
+    for (line: String <- source.getLines()) {
+      var a: Int = -1
+      var b: Int = -1
+      var i: Int = 0
+      while (i < line.length) {
+        val c: Char = line(i)
+        var value: Int = -1
+        if ('0' <= c && c <= '9') {
+          value = c - '0'
+        } else {
+          for (j: Int <- DIGITS.indices) {
+            val digit: String = DIGITS(j)
+            if (value == -1 && i < line.length - digit.length + 1) {
+              if (line.substring(i, i+digit.length) == digit) {
+                value = j+1
+                if (a == -1) {
+                  i += digit.length - 1
+                }
+              }
+            }
+          }
+        }
+        if (value != -1) {
+          if (a == -1) {
+            a = value
+          }
+          b = value
+        }
+
+        i += 1
+      }
+
+      sum += a*10 + b
+    }
+    source.close()
+    return sum
+  }
+  def main(args: Array[String]): Unit = {
+    val sum: Int = loadInput("res/day1/input1.txt")
+    println(s"sum = $sum")
+  }
+}

tests/day1/Puzzle1Test.scala

@@ -2,7 +2,7 @@ package day1
 
 import org.scalatest.funsuite.AnyFunSuite
 
-class Puzzle1Tester extends AnyFunSuite {
+class Puzzle1Test extends AnyFunSuite {
   test("Puzzle1.loadInput") {
     assert(Puzzle1.loadInput("tests_res/day1/input1.txt") == 142)
   }

tests/day1/Puzzle2Test.scala

@@ -0,0 +1,11 @@
+package day1
+
+import org.scalatest.funsuite.AnyFunSuite
+
+class Puzzle2Test extends AnyFunSuite {
+
+  test("Puzzle2.loadInput") {
+    assert(Puzzle2.loadInput("tests_res/day1/input2.txt") == 281)
+  }
+
+}

tests_res/day1/input2.txt

@@ -0,0 +1,7 @@
+two1nine
+eightwothree
+abcone2threexyz
+xtwone3four
+4nineeightseven2
+zoneight234
+7pqrstsixteen