aoc_2024/day03.kts

#!/usr/bin/env kotlin
import java.io.File
import java.util.Scanner

val scanner = Scanner(File("day03input.txt"))
var partOneSum = 0
var partTwoSum = 0
var doState = true

while (scanner.hasNextLine()) {
    val line = scanner.nextLine()
    val regex = Regex("(mul\\((\\d+),(\\d+)\\))|(do\\(\\))|(don't\\(\\))")
    val match = regex.findAll(line)
    for (matchResult in match) {
        if (matchResult.value == "don't()") {
            doState = false
        } else if (matchResult.value == "do()") {
            doState = true
        } else {
            val (a, b, c) = matchResult.destructured
            val factorOne = b.toInt()
            val factorTwo = c.toInt()
            partOneSum += factorOne * factorTwo
            if (doState) {
                partTwoSum += factorOne * factorTwo
            }
        }
    }
}
println("Part One Sum: $partOneSum")
println("Part Two Sum: $partTwoSum")