Daily JavaScript Challenge #JS-116: Flatten a Nested Array

Daily JavaScript Challenge: Flatten a Nested Array

Hey fellow developers! 👋 Welcome to today's JavaScript coding challenge. Let's keep those programming skills sharp!

The Challenge

Difficulty: Medium

Topic: Array Manipulation

Description

Write a function that takes a multidimensional array and returns a new array with all elements flattened to a single-level array. You must preserve the order of elements from the input nested arrays.

Ready to Begin?

https://www.dpcdev.com/

1. Fork this challenge
2. Write your solution
3. Test it against the provided test cases
4. Share your approach in the comments below!

Want to Learn More?

Check out the documentation about this topic here: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/isArray

Join the Discussion!

• How did you approach this problem?
• Did you find any interesting edge cases?
• What was your biggest learning from this challenge?

Let's learn together! Drop your thoughts and questions in the comments below. 👇

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Comments

[James Curran]

This is remarkably simple in C# ( after the complex array definition):

int[][] array = new int[][]
{
new int[] { 1, 1, 3 },
new int[] { 5, 7, 9, 1, 2 },
new int[] { 11, 3, 11, 10, 4 },
new int[] { 8, 7, 6, 5 }
};

var singlearray = array.SelectMany(a => a).ToArray();

[Néstor Pérez González]

Nowadays, this is as simple as:

array.flat(Infinity)

But I understand the real challenge is to implement this by yourself without using flat 😁