Question

How to convert a specific column of a decimal matrix to a string in Kotlin

Answer 1

fun convertColumnToString(matrix: Array<IntArray>, col: Int): String {
    return matrix.map { it[col] }.joinToString(" ")
}

fun main() {
    val matrix = arrayOf(
        intArrayOf(4, 7, 9, 18, 29, 0),
        intArrayOf(1, 9, 18, 99, 4, 3),
        intArrayOf(9, 17, 89, 2, 7, 5),
        intArrayOf(19, 49, 6, 1, 9, 8),
        intArrayOf(29, 4, 7, 9, 18, 6)
    )

    val col = 3
    val result = convertColumnToString(matrix, col)

    println(result)
}



/*
run:

18 99 2 1 9

*/

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