potea

fun ant2(count: Int) {
    fun lookAndSay(sequence: Sequence<String>): Sequence<String> {
        return buildSequence {
            var head = '1'
            var count = 0

            sequence.forEach {
                for (c in it) {
                    if (c != head) {
                        yield("$head$count")

potea

fun ant1(count: Int) {
    fun lookAndSay(list: List<Int>): List<Int> {
        val count = list.takeWhile { it == list[0] }.size
        val sublist = list.drop(count)

        return when(sublist.size) {
            0 -> listOf(list[0], count)
            else -> listOf(list[0], count) + lookAndSay(sublist)
        }
    }