In Scala Stack class
, the apply() method is utilized to return an element at a given position in the stack. The top of the stack corresponds to the element at 0th position and so on.
Method Definition: def apply(idx: Int): A
Return Type: It returns an element at a given position in the stack.
Example #1:
// Scala program of apply() // method import scala.collection.mutable.Stack
// Creating object object GfG
{ // Main method
def main(args : Array[String])
{
// Creating a stack
val s 1 = Stack( 1 , 2 , 3 , 4 , 5 )
// Print the stack
println(s 1 )
// Applying apply method
val result = s 1 .apply( 0 )
// Display output
println( "Element at 0th position: " + result)
}
} |
Output:
Stack(1, 2, 3, 4, 5) Element at 0th position: 1
Example #2:
// Scala program of apply() // method import scala.collection.mutable.Stack
// Creating object object GfG
{ // Main method
def main(args : Array[String])
{
// Creating a stack
val s 1 = Stack( "C++" , "Java" , "Python" , "Scala" )
// Print the stack
println(s 1 )
// Applying apply method
val result = s 1 .apply( 2 )
// Display output
println( "Element at 2nd position: " + result)
}
} |
Output:
Stack(C++, Java, Python, Scala) Element at 2nd position: Python