Frontend Interview Question | How to Flatten Array of Array ? | Recursion| Javascript Interview

Hi Everyone
Flatten Array of Array is one of the most asked Interview Question and this is very important to understand to solve many complex problems in programming.
This video will cover all about how to Flatten your array of array and how Recursion will help you to solve this use case.
Watch the complete video till the end to understand it completely.

What is Recursion?
Recursion is defined as the process of a function calling itself. A recursive function is the function that corresponds to this.
The base case (or halting condition) and the recursive call to itself are commonly two elements of a recursive function.
The base case is when the function should no longer recurse.'
A recursive call is when a function calls itself, usually with slightly modified arguments that 'work down' to the base case.

Check video on Recursion

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#FlattenArray #frontEndInterview #JavascriptInterview

[MrCoder-uy]

Surely your teachers must be proud of you, best explained!

[pinakapani]

I am really addicted to your videos after watching your redux toolkit in 1 hour Project and now I am exploring all of your videos and every video is a diamond. Thank you for your excellent explanation & hoping to learn a lot from you mam.

[ajithkumarb]

Clearly explained. Thank you... expecting more interview questions from u

[explore-learn-share]

Very well explained ✓ Concept of flate Ning array is clear to me now 🙏

[vaibhavsarode]

Osm and perfect explanation, thank you for the video

[softwarejobkosam]

Very helpful do more interview and in depth concept videos s

[shantanushukla]

Thank You so much ma'am, you are really very good teacher.

[BrijeshSingh-dpku]

Thanks for sharing keep making such tutorials 👍

[shivugg]

Wow madam you have repository of knowledge

[mehakjain]

Thank you for explaining so effortlessly ☺️ good wishes to you ❤️

[ashishnayak]

Nice explanation....waiting for ur react series

[harish]

Hii Nisha,
Make videos about patterns nisha

[saurabhkawatra]

Amazing 👍🏻👍🏻👍🏻 mam could also tell about '... ' how to use this 3 dots

[dharmaraopalli]

Hi Nisha can we do the recursion for brackets also like {{{}}{}}{}. I want to arrange it in an order .if yes please explain in one class

[swastikupadhye]

Cant we use flat method specifying depth...

[niteshparmar]

More simple way is
arr.flat(arr.length)
Or
arr.flat(2)

[anandagark]

should create the output variable inside the flatten function

Try this :
const arr = [[1, 2], [3], 4, 6, [7, 8], 9, 10];
function flattern(arr){
return arr.reduce((array, val)=>{
return
}, []);
}
console.log(flattern(arr));

[unnikuttan]

you do this simply using flat method with depth infinity

const arr1 = [1, 2, 3, [1, 2, 3, [4, 5, 6, 7]], 70, 50];

const newArray = arr1.flat(Infinity);

output
[
1, 2, 3, 1, 2,
3, 4, 5, 6, 7,
70, 50
]

[gyanendrarana]

The output is not flattered array, it is string.

[josygeorge]

it creates a string as the result, but not an array. doesn't solve the purpose...