Scala中2D数组的深层副本？

import scala.util.Random

val rows = 3
val cols = 3
val matrix = Array.ofDim[Int](rows, cols)

// 初始化矩阵
for (i <- 0 until rows; j <- 0 until cols) {
  matrix(i)(j) = Random.nextInt(10)
}

// 创建深层副本
val matrixCopy = matrix.map(_.clone())

// 打印原始矩阵和副本
println("Original matrix:")
for (i <- 0 until rows) {
  for (j <- 0 until cols) {
    print(matrix(i)(j) + " ")
  }
  println()
}

println("Deep copy of the matrix:")
for (i <- 0 until rows) {
  for (j <- 0 until cols) {
    print(matrixCopy(i)(j) + " ")
  }
  println()
}