Question

How to create a two dimensional (2D) array in Kotlin

Answer 1

fun main() {
    val rows: Int = 3
    val cols: Int = 4

    val arr = Array(rows, { IntArray(cols) })

    for (row in arr) {
        for (n in row) {
            print("$n ")
        }
        println()
    }
}




/*
run:

0 0 0 0 
0 0 0 0 
0 0 0 0 

*/

 

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Answer 2

import java.util.Arrays

fun main() {
    val rows: Int = 3
    val cols: Int = 4

    val arr = Array(rows, { IntArray(cols) })

    for (i in arr.indices) {
        println(arr[i].contentToString())
    }
}




/*
run:

[0, 0, 0, 0]
[0, 0, 0, 0]
[0, 0, 0, 0]

*/

 

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