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Let me show you how I'm going to solve this particular challenge.

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So coming down here, let me copy the question again and then place it down here because I want to make

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reference to it.

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After that, I'm going to remove it.

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So the first question is that create a function to separate a string using any character and the functions

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we take to.

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The first argument is the array, and the second argument is a character to use as a separator.

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So let's see how I'm going to solve this particular challenge.

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So the first one says that I should provide my function name.

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The first statement.

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So solution.

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It goes like this.

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So I'm going to use function expression so it counts and I will name my function as separate.

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String.

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And now e go to my function keyword and my parentheses and my carry braces.

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So point about to say that the functions we take to activate the first I given is the array, so provide

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an array as my parameter here.

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The second element is a character.

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So here, come on.

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And then my character.

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So now here comes the logic.

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Well, you remember that on array we can use join to join with a different character.

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So if the question says that we should pass in a string, then we're going to make our life a little

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bit difficult.

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But here is the case.

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You should walk, pass in an array, and that is it.

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So let's see.

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So here is going to return the array.

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I'll pass in as an argument to this function on that I have the method called join on that and I want

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to join with the character or passing to this function.

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So here we go.

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So down here let me assign the result coming back after calling this function called separate string

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and we see that look at IntelliSense, the this particular function takes in an array and then a character

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here.

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So here I'll provide an array of record.

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Let me call this one, let's say JavaScript and then comma and then code CSS and then come on, let

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me provide this say.

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JS.

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The next agreement our pass in is a character I want to use separate this array.

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So comma here come on.

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And then I want to separate with dash.

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So let's see.

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So now let me console.log the result.

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So check the console.

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Now we see that it has been separated with the dash because the last record is lost.

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We don't have the dash in front of it.

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So that is about the first challenge.

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The second one is a little bit difficult than the first one because we need to do some level of some

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logic here.

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So now let me remove this question, this comment here.

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Save it and now I'm done with the first one.

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Yeah.

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The second challenge.

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So let me copy this.

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You can challenge also let me call this one solution one and down here going to be as solution to.

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So listen up.

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Two.

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So let's read the question again.

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And it is that create a function to reverse a string.

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Remember you to reverse a string, but not an array.

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So the next point is that the function should take a string as an argument.

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The function should return the string in reverse order.

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So here we ask ourselves, what kind of method do we need for this?

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Well, it talks about what reverse we need.

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What a reverse method.

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And reverse method works on array.

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But the question is that we should pass in a string.

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So it means that we need to use split and split the text into an array.

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Then I can use reverse and then join it with a different character.

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So let me show you what I'm going to do right now.

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So coming down here, I'm going to name my function and use some function statement here for function

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here is going to be as reverse reverse string once reverse the string and then pass in only the string

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I want to reverse.

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And now my carry braces.

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So here we go.

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So inside, I'm going to return the string zero dot splits because I need to split it before I can get

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an array.

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So if I split it into individual component, split with the empty string like that.

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And then because after splitting, I get an array so I can change it again, code chain, I can change

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as many methods as I want.

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So on that, I can also change what is called the reverse.

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The reverse.

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I want to reverse it.

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And after that, I want to join with what let's say empty string as that.

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So that is it.

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So let's try it out and see.

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So coming down here const.

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So let me comment out this one here.

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There is a lot here.

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So coming down here comes cost.

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My result is equal to reverse string and I'll pass in a string I want to reverse.

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So let's say that I want to reverse.

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I mean, node node.js, save it.

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Okay, so now let's console.log the result down here as mine result and now let's have a look.

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I have reversed it to have something like Node J is in this way j you g don't a sg don't.

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So that's how we can reverse it, right?

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So if this syntax confuses you, let me break it down a little bit here.

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So here because something changed.

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So like I said, we can change us any methods we want.

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So first of all, we can say that, okay, so let me remove let me have comments here.

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First of all, convex.

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Convex trying to array the first one so counts string.

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Eric is equal to.

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I would take the string and then on that split the first one and then after splitting I want to reverse

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it.

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So reverse.

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The convicted.

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I strength.

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Convective string.

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Yeah.

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More precise.

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Is that so?

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Here counts as reverse.

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I read.

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It is reversed, Harry.

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And because now it's an array.

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I can have the this one and then t are array dot.

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Reverse.

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As that.

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But guys, because we are within cost here, we cannot overwrite this particular data.

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So let's use let's as we discuss under the.

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JavaScript types.

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So now I have joined it the Nest app, reverse it at a reverse and I want to so let's remove this and

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for now let's try to remove this one and then let's return the reverse string and let's see if we see

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that.

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I guess something where here is sorry is reverse array this one it will see that I have the reverse

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array, but how can I join it?

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So if I use join, I'm going to remove this array and I'm going to have this text.

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So here I can append dot join.

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As that.

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And now I have it as before.

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So here we can even go one level and say that.

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Let the definer agree.

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Let me say a array.

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Find out.

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Let me say finite string.

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Finite string is not equal to my reverse my reverse array, which is this one then dot join.

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Then I can return the final year.

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And then it's still the same.

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So any of the other methods also.

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Okay, so here are simple one line of code I can just return.

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So let me comment out this once and then this one can be shortened using the return.

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I would take my string on that.

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I'm going to just play it to split it with empty string.

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After that, I want to reverse it.

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Reverse.

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Reverse.

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And then after reversing.

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I want to join it.

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So.

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Let's see.

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Let's go.

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Empty string.

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And now I have it.

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So any of this one is fine.