AoC | Day 1 | Part 1

package year_2023.day_1

fun partOne() {
    println("[2023] Day one, part one...")

    val numbers = input().split("\n")
        .map {
            val first = it.first { it.isDigit() }
            val last = it.last { it.isDigit() }
            "$first$last".toInt()
        }

    val sum = numbers.sum()
    println(sum)
}