All language subtitles for 5. Count the number of values in a List

So additional question in our programming course regarding linked lists, I hope you are on right so

far.

So this question is very similar to you exercise the previous exercise.

So we will go over it really quickly.

So what do we have to do is to write a function that receives a linked receives a linked list and some

integer number, OK?

And all the function should do is simply to return the number.

OK, let's modify this part.

Return the number.

OK, the number of occurrences of these events number in the list.

OK, so we receive a linked list and we receive a number and we eat to rate over all the nodes of these

linked list and then we count how many times.

And we we we've even if we have encountered in the nodes that have these integer number.

OK, so let's start writing down the function.

And what we can say is that the function is going to be probably of an integer type.

Right, because we use it to count something to count the number of nodes having these number.

OK, and it's very simple.

So ain't, let's say, total total number appearances, appearances, even say it in list.

OK, so these function will receive the header and also it will receive a number.

So it no num no.

You know, what we are going to do here is to create a count variable just like previously in council

or in count equals to zero node pointer current and let's say tampoe equals to had.

You know what we are going to do is as long as we haven't reached the end of the linked list, meaning

we haven't reached the last node.

So while Tambe next does not equals two does not equal to null.

So as long as that's the case, we will check if temp data equals to.

And if that's the case, we will simply use count plus plus meaning we found a node that has as its

in its data field, a num num value.

So found a corresponding corresponding node, ok.

And of course in both cases if we found or if we didn't find, then we should simply move temp to the

next node.

So temp equals to temp next.

And there you go.

That's how you iterate over all the nodes of this linked list and you count how many times you found

a corresponding node with a data field equals to NUM, which is this guy over here.

And lastly, you simply return the count and that's how you do it.

Guys, that's how you do it.

That's how you tackle different linked list problems.

That's how you work with pointers.

I hope they at this point, you're starting to feel more confident about how pointers can be used.

Of course, there are a lot of data structures that we may use for our practice, but for these section,

I think it will be enough.

And this is it for this video, guys.

As always, let me know what you think about it.

Feel free to to put some review, to write some comments and until next time, have a great day or evening,

whatever it is.

I'll see you then.