Reverse a String - Basic Algorithm Scripting - Free Code Camp

In this basic algorithm scripting tutorial we reverse a string. This is another tutorial that makes up a series where I cover the FreeCodeCamp curriculum. Enjoy!

[EmmanesWilliams]

Man to watch you code is something on another level, to see you solve problems in real time is phenomenal.

[zken]

Thank you Mr. Ian for showing us another way to get the accurate answer
return

[tekken_king]

Here is a very simple solution and straight forward

- Use Spread Operator to copy the str and put it in an array
// output will be looking like this [ 'h', 'e', 'l', 'l', 'o' ]

- Use reverse() method built in Js to reverse the str
// [ 'o', 'l', 'l', 'e', 'h' ]

-Use join() method to join them
// o, l, l, e, h

- add ' ' in join method to remove the comma
the line will be looking like this let reverseArr = [...str].reverse().join(' ')
//output olleh

// Full solution
function reverseString(str) {

let reverseArr = [...str].reverse().join(' ')
return reverseArr
}



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[masoudhabibzad]

Thank you for this, Useful Programmer! I could do this with for loop but I knew there is some other way of doing this and there it was: String methods!

[saramoko]

thank you for adding this! I know nothing about code and started FCC during quarantine. I like to think I'm a fairly intelligent individual but sometimes I just draw huge blanks when it comes to the algorithms. Does't help that I don't know any short cuts like that shown in the first solution!

[karthikjmoger]

Split('') with convert each character into an array
Reverse () will reverse the array characters
Join('') will convert the array to strings.
(Caution: make sure there is no space between quotes, otherwise it will consider entire string instead of single character).

[jowurani]

Great channel great explanations. thank you so much these videos help a ton.

[deanlaz]

I'm wondering why all of a sudden they make the lesson at least three times as hard. We have not learnt either concept for either way to solve this problem?

[MrWardo]

Thanks for making this video! You rock!

[moderncloth]

I have a question. At first I was confused by 'let i = str.length - 1'... I get it, I think. Is it because string.length is a string method, and string methods return arrays which have index values? That's what it looks like. If so this is a big leap for me. The concept of string methods returning arrays and array methods returning strings....

[paulfanning]

I’m having a hard time finding out where to start when they don’t start the code for me. Like I don’t get what u mean when u say it goes around one and it’s four and then goes around again then it is three I don’t know if u get me but just really confused with the i is more than zero.
If u wouldn’t mind could u go through the whole meaning of the second code for me please would help so much thank you