Scala program to copy the elements of a sequence into the array

Here, we are going to learn how to copy the elements of a sequence into the array in Scala programming language?
Submitted by Nidhi, on June 03, 2021 [Last updated : March 11, 2023]

Scala - Copying Sequence Elements into an Array

Here, we will create a sequence of integer numbers using Seq collection class. Then we will copy the elements of the sequence using the copyToArray() method and printed the elements of the array on the console screen.

The Seq is a trait. It is used to represent the indexed sequence. It is immutable. It also maintains the insertion order of elements.

Scala code to copy the elements of a sequence into the array

The source code to copy the elements of the sequence into the array is given below. The given program is compiled and executed on the ubuntu 18.04 operating system successfully.

// Scala program to convert the elements
// of sequence into array

import scala.collection.immutable._

object Sample {
  // Main method
  def main(args: Array[String]) {
    var nums: Seq[Int] = Seq(10, 20, 30, 20, 56, 67, 78);
    var arr = new Array[Int](4);

    nums.copyToArray(arr, 0, 4);

    println("Elements of array: ");
    arr.foreach((item: Int) => print(item + " "));
    println();
  }
}

Output

Elements of array: 
10 20 30 20

Explanation

Here, we used an object-oriented approach to create the program. And, we imported Collection classes using below statement,

import scala.collection.immutable._

Here, we also created a singleton object Sample and defined the main() function. The main() function is the entry point for the program.

In the main() function, we created a sequence nums using Seq collection. Then we copied the sequence of the elements into the array. After that, we printed the elements of the array on the console screen.