Is it possible to sort an ArrayList of integers using comparable or comparator?

Question

I am trying to sort an ArrayList using comparable interface. How do I sort ArrayList in descending or ascending order?

score 2 · Answer 1 · edited Jun 20 '20 at 09:12

2

You're able to sort an ArrayList if the elements implement Comparable. For example, Integers can be sorted with sort():

Collections.sort(arrayList)

Lists (and arrays) of objects that implement this interface can be sorted automatically by Collections.sort (and Arrays.sort).

from https://docs.oracle.com/javase/7/docs/api/java/lang/Comparable.html

edited Jun 20 '20 at 09:12

Community

1
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answered Jan 28 '17 at 05:25

keewi

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3

Is it possible to sort an ArrayList of integers using comparable or comparator?

1 Answers1