``` fun <T> List<List<T>>.transp...

# announcements

[marcinmoskala]

fun <T> List<List<T>>.transpose(empty: T): List<List<T>> {
    if (isEmpty()) return this
    val maxRowCount = map { it.size }.max()!!
    return (0..maxRowCount - 1).map { indices.map { j -> get(j).getOrElse(it) { empty } } }
}