The exists() method is utilized to check whether a predicate holds for any of the elements of the queue.
Method Definition: def exists(p: (A) => Boolean): Boolean
Return Type: It returns true if the predicate holds true for any of the elements of the queue or else returns false.
Example #1:
// Scala program of exists() // method // Import Queue import scala.collection.mutable. _
// Creating object object GfG
{ // Main method
def main(args : Array[String])
{
// Creating queues
val q 1 = Queue( 1 , 3 , 2 , 7 , 6 , 5 )
// Print the queue
println(q 1 )
// Applying exists method
val result = q 1 .exists(x => {x % 7 == 0 })
// Displays output
print( "Element divisible by 7 exists: " + result)
}
} |
Output:
Queue(1, 3, 2, 7, 6, 5) Element divisible by 7 exists: true
Example #2:
// Scala program of exists() // method // Import Queue import scala.collection.mutable. _
// Creating object object GfG
{ // Main method
def main(args : Array[String])
{
// Creating queues
val q 1 = Queue( 1 , 3 , 2 , 7 , 6 , 5 )
// Print the queue
println(q 1 )
// Applying exists method
val result = q 1 .exists(x => {x == 10 })
// Displays output
print( "Element 10 exists: " + result)
}
} |
Output:
Queue(1, 3, 2, 7, 6, 5) Element 10 exists: false