Question

How to zero a 2D array in Scala

Answer 1

object Main extends App {
  // Define a function to print the 2D array
  def printArray(array: Array[Array[Int]], rows: Int, cols: Int): Unit = {
    for (i <- 0 until rows) {
      for (j <- 0 until cols) {
        print(array(i)(j))
        printf(" ")
      }
      println()
    }
  }
  
  var arr = Array(
      Array(1, 82, 3,  5),
      Array(4,  5, 6, 99),
    )
    
  val rows = arr.length
  val cols = arr(0).length

  printArray(arr, rows, cols)

  // Initialize the 2D array with zeros
  arr = Array.ofDim[Int](rows, cols)

  printArray(arr, rows, cols)
}

  
  
/*
run:
    
1 82 3 5 
4 5 6 99 
0 0 0 0 
0 0 0 0 
  
*/

 

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