Scala Queue count() method with example
The count() method is utilized to count the number of elements in the queue that satisfies a given predicate.
Method Definition: def count(p: (A) => Boolean): Int
Return Type: It returns the count the number of elements in the queue that satisfies a given predicate.
Example #1:
// Scala program of count() // method // Import Queue import scala.collection.mutable. _ // Creating object object GfG { // Main method def main(args : Array[String]) { // Creating a queue val q 1 = Queue( 1 , 2 , 3 , 4 , 5 ) // Print the queue println(q 1 ) // Applying count method val result = q 1 .count(z => true ) // Displays output print( "Number of element in queue: " + result) } } |
Output:
Queue(1, 2, 3, 4, 5) Number of element in queue: 5
Example #2:
// Scala program of count() // method // Import Queue import scala.collection.mutable. _ // Creating object object GfG { // Main method def main(args : Array[String]) { // Creating a queue val q 1 = Queue( 1 , 2 , 3 , 4 , 5 ) // Print the queue println(q 1 ) // Applying count method val result = q 1 .count(z => {z % 2 == 0 }) // Displays output print( "Number of element in queue divisible by 2: " + result) } } |
Output:
Queue(1, 2, 3, 4, 5) Number of element in queue divisible by 2: 2
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