In Scala Stack class
, the forall() method is utilized to check if a predicate holds true for all the elements of the stack.
Method Definition: def forall(p: (A) => Boolean): Boolean
Return Type: It returns true if the predicate holds true for all the elements of the stack or else returns false.
Example #1:
// Scala program of forall() // method // Import Stack import scala.collection.mutable. _
// Creating object object GfG
{ // Main method
def main(args : Array[String])
{
// Creating stack
val s 1 = Stack( 6 , 2 , 3 , 4 , 5 )
// Print the stack
println(s 1 )
// Applying forall method
val result = s 1 .forall(x => {x % 7 == 0 })
// Display output
println( "All the elements are divisible by 7: " + result)
}
} |
Output:
Stack(6, 2, 3, 4, 5) All the elements are divisible by 7: false
Example #2:
// Scala program of forall() // method // Import Stack import scala.collection.mutable. _
// Creating object object GfG
{ // Main method
def main(args : Array[String])
{
// Creating stack
val s 1 = Stack( 7 , 9 , 3 , 1 , 5 )
// Print the stack
println(s 1 )
// Applying forall method
val result = s 1 .forall(x => {x % 2 == 1 })
// Display output
println( "All the elements are odd: " + result)
}
} |
Output:
Stack(7, 9, 3, 1, 5) All the elements are odd: true