Domanda di colloquio di Morgan Stanley

How to sort Arraylist in descending order? explain with an example code

Risposta di colloquio

Anonimo

24 lug 2020

To sort the ArrayList in descending order, we can use the reverseOrder method of Collections class public class ReverseArrayList { public static void main(String[] args) { List list = new ArrayList(); list.add(10); list.add(50); list.add(30); list.add(60); list.add(20); list.add(90); Iterator i = list.iterator(); System.out.println("printing the list...."); while(i.hasNext()) { System.out.println(i.next()); } Comparator cmp = Collections.reverseOrder(); Collections.sort(list,cmp); System.out.println("printing list in descending order...."); Iterator i2 = list.iterator(); while(i2.hasNext()) { System.out.println(i2.next()); }