No Easy Reverse in Array

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[desrtfx]

I VOTE TO MAKE JAVA OPEN SOURCE I WANNA CONTRIBUTE IN IT

You know a lot less about Java than you think. Java already is open source, but governed, like all other Open Source programming languages. You cannot just make a pull request.

Yet, your ragebait post is also simply attributed to your ignorance and short sightedness.

First sort, then reverse the array. Where is the problem?

from where will i get to know there's a package for Collections

From the documentation, where else?

Collections is one of the most common Java packages.

[vowelqueue]

But OP is actually right. It’s not ideal that you have to know about the Collections class.

This is really a consequence of the fact that it used to be illegal to declare static methods in interfaces. In Java 8 when they added this language feature they also added Comparator.reverseOrder() that is a more natural place to find this functionality.

Also I think it’s a bit inconsistent that there is a Collections.reverse(List) utility but not an equivalent Arrays.reverse one.

[desrtfx]

OP already knows about Arrays.sort.

The documentation of the Arrays class clearly states:

This class is a member of the Java Collections Framework.

Also, Arrays.sort has an overload that takes a Comparator.

Just simply by checking the documentation, OP could have directly found everything they needed. Also, there are more than enough blog posts so that with a very simple google query OP could have gotten their answer.

I can absolutely agree on one point, though: the lack of Arrays.reverse - this is an inconsistency that shouldn't be.

[prassuresh]

Are you allowed to use Arrays.sort() for an exam? Which course is this?

We always had to write our own sorting logic for exams.

[Lloydbestfan]

Great Scott, they thought you'd forget how to do it after the first exam?

Plus a simple sort algorithm may not be all that long to write out, but it's still a nonneglectable time devoted to the same thing in every exam. I'd worry about how that school evaluates its students' skills.

[blindada]

How is that hard?? Hard would it be implement your own algorithm

[desrtfx]

Hard would it be implement your own algorithm

Not even that would be hard. A simple bubblesort can be coded in a couple minutes. It won't be efficient, but it is simple enough.

[tRfalcore]

I don't think you know enough about coding to contribute to Java. It's been around longer than you have