El método pollLast() de java.util.concurrent.ConcurrentSkipListSet es una función integrada en Java que devuelve, recupera y elimina el último elemento (el más alto), o devuelve un valor nulo si este conjunto está vacío.
Sintaxis:
public E pollLast()
Valor devuelto: la función devuelve recupera y elimina el último elemento (el más alto), o devuelve un valor nulo si este conjunto está vacío.
Los siguientes programas ilustran el método ConcurrentSkipListSet.pollLast():
Programa 1:
// Java program to demonstrate pollLast()
// method of ConcurrentSkipListSet
import java.util.concurrent.*;
class ConcurrentSkipListSetpollLastExample1 {
public static void main(String[] args)
{
// Creating a set object
ConcurrentSkipListSet<Integer> Lset = new ConcurrentSkipListSet<Integer>();
// Adding elements to this set
for (int i = 10; i <= 50; i += 10)
Lset.add(i);
// Printing the content of the set
System.out.println("Contents of the set: " + Lset);
// Retrieving and removing Last element of the set
System.out.println("The Last element of the set: " + Lset.pollLast());
// Printing the content of the set after pollLast()
System.out.println("Contents of the set after pollLast: " + Lset);
}
}
Producción:
Contents of the set: [10, 20, 30, 40, 50] The Last element of the set: 50 Contents of the set after pollLast: [10, 20, 30, 40]
Programa 2:
// Java program to demonstrate pollLast()
// method of ConcurrentSkipListSet
import java.util.concurrent.*;
class ConcurrentSkipListSetpollLastExample2 {
public static void main(String[] args)
{
// Creating a set object
ConcurrentSkipListSet<Integer> Lset = new ConcurrentSkipListSet<Integer>();
// Printing the content of the set
System.out.println("Contents of the set: " + Lset);
// Retrieving and removing Last element of the set
System.out.println("The Last element of the set: " + Lset.pollLast());
}
}
Producción:
Contents of the set: [] The Last element of the set: null
Referencia:
https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/ConcurrentSkipListSet.html#pollLast–
Publicación traducida automáticamente
Artículo escrito por rupesh_rao y traducido por Barcelona Geeks. The original can be accessed here. Licence: CCBY-SA