Question

How to print 2D array in Scala

Answer 1

object O {
    def main(args: Array[String]): Unit = {
        val arr = Array.ofDim[Int](2, 3)

        val row1 = arr.apply(0)
        row1.update(0, 7)
        row1.update(1, 4)
        row1.update(2, 8)
        
        val row2 = arr.apply(1)
        row2.update(0, 2)
        row2.update(1, 9)
        row2.update(2, 4)

        for (row <- arr) {
            for (n <- row) {
                print(n)
                print(" ")
            }
            println()
        }
    }
}



/*
run:

7 4 8 
2 9 4 

*/

 

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Answer 2

object O {
    def main(args: Array[String]): Unit = {
        val arr = Array.ofDim[Int](2, 3)

        val row1 = arr.apply(0)
        row1.update(0, 7)
        row1.update(1, 4)
        row1.update(2, 8)
        
        val row2 = arr.apply(1)
        row2.update(0, 2)
        row2.update(1, 9)
        row2.update(2, 4)
        
        print(arr.map(_.mkString).mkString("\n"))
    }
}



/*
run:

748
294

*/

 

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