All language subtitles for 1. Interview Question - Swap WITHOUT 3rd Variable!

Welcome back, ladies and gentlemen, to your best SAE program in chorus.

So maybe some of you may want to test their skills with all the knowledge they've gained so far in this

course.

And I thought of a great way to do so by simply giving you some interview question.

That's going to be awesome.

But before we proceed, before we proceed with this video, what I want you to do is to take a moment

and leave me a review and feedback on this chorus.

It takes much less than a minute to do so.

And it means so much for me, really.

This way, when you leave a review and some feedback, I can really understand, if you like the chorus

and the content I've created or not.

And then I will simply be able to do my best to make your experience much better in the future.

So whether you're like the chorus or not.

Which is also fine.

Pause the video and please just let me know that by leaving a review and let me know what you like and

what you don't like.

So once you left your feedback, we are ready to give it a try with our first interview question.

And what this question is all about.

So during our chorus, we've discussed what is a swap operation and we've seen some illustration explaining

about this topic and also some C-code implementation to do so by using some temp variable.

Right.

You remember this task?

We had these two variables, A and B, we simply created another attempt variable and then we just took

the value from A, put it inside temp.

Then we took the value out of B and put it inside A.

And then lastly, we took the value of town, which is currently inside of the temp variable, and we've

put it inside variable B, so that's how we accomplish this swap between the two variables, A and B..

And basically them while this was great.

Your interviewer does not think so.

During interviewer for your dream jobs, let's say, does not like the fact that you have to use this

additional temp variable.

He goes and says something like, oh, wait, please.

That's that's just a wasted memory to create this additional variable.

And he says you can only pass this test, this interview, if you can't solve the swap operation without

using a third variable.

And I think that during an interview to get this question to see for the first time, it's not going

to be so easy.

So now this question, guys, from my experience and from with the experience of many of my colleagues,

is being asked a lot in software interviews.

So make sure you come prepared for this one.

And what I want you to do now is to take as much time as you need to think of the solution.

Even if it will take a couple of hours or even a few days to live it aside.

Come back to it later on and think about it.

I don't know.

But.

But it doesn't matter.

Your task is the thing when you don't have the solutions in front of you.

So think about it.

Think how you can solve it without using the third variable, meaning that the values of A variables

A and B will be swapped without using the term variable that we've learned so far.

But don't you even think about jumping straight to the full solution video?

That I will.

Of course I will share with you.

Give it a try.

First of all, on your own.

And then once you are done, we are going to see the full video.

So, as always, guys, I wish you good luck.

And I really hope that this exercise will help you in preparing for your interview questions.

So leave me a review.

Tell me if you like it or not.

And thank you for your time.

And I'll see you in the Solutions video by.