Scala Queue head() method with example
Last Updated :
29 Oct, 2019
The head() method is utilized return the first element of the queue.
Method Definition: def head: A
Return Type: It returns the first element of the queue.
Example #1:
import scala.collection.mutable. _
object GfG
{
def main(args : Array[String])
{
val q 1 = Queue( 1 , 3 , 2 , 7 , 6 , 5 )
println(q 1 )
val result = q 1 .head
print( "First element of the queue: " + result)
}
}
|
Output:
Queue(1, 3, 2, 7, 6, 5)
First element of the queue: 1
Example #2:
import scala.collection.mutable. _
object GfG
{
def main(args : Array[String])
{
val q 1 = Queue( 5 , 3 , 2 , 7 , 6 , 1 )
println(q 1 )
val result = q 1 .head
print( "First element of the queue: " + result)
}
}
|
Output:
Queue(5, 3, 2, 7, 6, 1)
First element of the queue: 5
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