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How to use the removeLast method of ArrayDeque in Kotlin
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Overview
The removeLast method removes and returns the last element of the ArrayDeque.
If the deque is empty, then a NoSuchElementException will be thrown.
Syntax
// remove first element
fun removeLast(): E
Parameters
This method doesn’t take any parameters.
Return value
The removeLast method returns the last element which was removed.
Code example
The code below demonstrates how to use the removeLast method of the ArrayDeque:
fun main() {
// create a new deque which can have string elements
var deque = ArrayDeque<String>();
// add three elements to deque
deque.add("one");
deque.add("two");
deque.add("three");
println("The deque is " + deque);
// remove the last element of the deque
var removedElement = deque.removeLast();
println("\nThe last element removed from the queue is :" + removedElement);
println("The deque is " + deque);
}Using the removeLast method
Code explanation
In the code above, we see the following:
-
Line 3: We create an
ArrayDequewith the namedeque. -
Lines 6 to 8: We use the
addmethod to add three elements to thedeque. Now thedequeis{one, two, three}. -
Line 12: We use the
removeLastmethod to remove and return the last element of thedeque. In our case,threeis removed from thedequeand returned. Now the queue is{one, two}.
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arraydeque
kotlin
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