All language subtitles for 17. A Program to Find Two elements whose Sum is Closest to Zero - Question

What is going on, ladies and gentlemen, and in this exercise, what we are going to do is basically

to write a simple program, make some logic, OK, so we have a program and these programs should work

on an array and let's say we will have some array.

You will have some array of values.

And what do you have to do is to print, print, want print of some?

Of two elements.

In this array of two elements.

That is.

That is the most close.

Two zero.

So, for example, we have these array.

Let's see one, two, three four elements, we have one, we have minus two, we have two, we have

three.

OK, so we are looking for a pair of values that there are some will be closest to zero.

And what do you need to understand?

And that's basically what you need to solve is that let's say we have here is zero.

We have positive numbers, right?

We have here positive numbers, positive values and we also have negative values negative.

Right.

So what would you need to understand is where are you closer to zero?

So if we take one and minus two, we will get a sum of minus one.

If we take one and two, we will get a sum of three.

If we take one in three, we'll get a sum of four.

Then we can take minus two plus one.

We already know the result minus 2+2 will give us zero right minus two plus three will give us one.

So that's how you do it, and you can find out that there are a lot of pairs of sums that we can find

within an array.

OK, we need to take the sum of any two elements and find which of these sums that will be generated

from this array.

Sorry, will be the closest to zero.

OK, so which one of them and the way you compare between minus one and one, for example, you always

know, let's say that two is greater than minus one.

Or that basically you need a way to find out how you find the closeness to zero from both sides from

positive and negative.

And for that, you can use either some logic.

If a number is negative, let's multiplied by one to find out in comparison to where it stands for the

positive number.

Or you can simply use the ABS function for any value, and this function should return the absolute

value.

The absolute value for a given number that you are going to provided here.

OK.

So yeah, these are the instructions pretty much guiding you to solving this exercise.

So try it on your own, give it your best.

And once you're done, I'll see you in the solutions VIDEO.

Thank you so much.