Something like this: ``` fun main(args: Array<S...
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Something like this:
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fun main(args: Array<String>) {
    val matrix = listOf(listOf(1, 2), listOf(2, 4, 6), listOf(10, 20, 30, 40))
    println(matrix)
    val sz = matrix.maxBy { it.size }!!.size
    val transposed = (0..sz - 1).map { index -> matrix.mapNotNull { if (index < it.size) it[index] else null } }
    println(transposed)
}