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Scala | Create Array with Range
  • Last Updated : 12 Jun, 2019

Array is a special kind of collection in Scala. It is a fixed size data structure that stores elements of the same data type. By using range() method to generate an array containing a sequence of increasing integers in a given range. We can use final argument as jump to create the sequence. if we do not use final argument, then jump would be assumed as 1.

Below are some examples of array with range:

Example:




// Scala program to create array with range 
import Array._
  
// Creating object
object GFG
{
    // Main method
    def main(args: Array[String]) 
    {
        var array1 = range(1, 15)
        var array2 = range(1, 15, 3)
      
  
        // Print all the elements of array1
        for ( i <- array1
        {
            print( " " + i )
        }
          
        println()
          
        // Print all the elements of array2
        for ( i <- array2
        {
            print( " " + i )
        }
    }
}
Output:
1 2 3 4 5 6 7 8 9 10 11 12 13 14
 1 4 7 10 13

In above example, an array of range (1, 15). In this range difference is not given so by default difference of range will be 1 element. Elements in the array are 1, 4, 7, 10 and 13. Here, we are creating an array of range (1, 15, 3). Which means an array with elements between 1 and 15 and range difference is 3. Elements in the array are 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, and 14.



For some of the collections, such as List and Array, we can also create a Range and convert it to the desired sequence: The REPL shows the array that can be created directly from a Range is toArray. We can also use a Range to create a sequence of characters as below:

Example:




// Scala program to create array with range 
import Array._
  
// Creating object
object GFG
{
    // Main method
    def main(args: Array[String]) 
    {
        val array1 = ('A' to 'F').toArray
        val array2 = ('a' to 'f').by(2).toArray
      
      
        // Print all the elements of array1
        for ( i <- array1
        {
            print( " " + i )
        }
          
        println()
          
        // Print all the elements of array2
        for ( i <- array2
        {
            print( " " + i )
        }
    }
}
Output:
A B C D E F
 a c e

In above example, an array of range (‘A’ to ‘F’).toArray. In this, range difference is not given so by default difference of range will be 1 character. characters in the array are A, B, C, D, E and F. Here, we are creating an array of range (‘a’ to ‘f’).by(2).toArray. Which means an array with characters between a and f and range difference is 2. Characters in the array are a, c, and e.

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