Scala Queue exists() method with example
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
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