Question

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

Answer 1

object ConvertColumnToString {

  def convertColumnToString(matrix: Array[Array[Int]], col: Int): String = {
    matrix.map(row => row(col)).mkString(" ")
  }

  def main(args: Array[String]): Unit = {
    val matrix = Array(
      Array(4, 7, 9, 18, 29, 0),
      Array(1, 9, 18, 99, 4, 3),
      Array(9, 17, 89, 2, 7, 5),
      Array(19, 49, 6, 1, 9, 8),
      Array(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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