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JavaScript Coding Challenges

Florin Pop on March 15, 2019

When it comes to programming, I am a big fan of two things: JavaScript and Coding Challenges! And I can't be happier than when I'm able to combine ...

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Sundeep • Mar 16 '19 • Edited

heads up, you've got a typo - missing 'c' in Regular Brakets

I have a few beginner to intermediate level exercises for Python - you could translate them to Javascript if you are interested :)

I also have some resource links for practice ideas and sites - might help you get more challenges to solve

mehdibenhemdene • Oct 23 '19

Suggested alternative solution for "Where do I belong" using Array.prototype.filter:

var array = [1, 2, 3, 4];

function getIndexToIns(arr, number) {
  let result = arr.sort().filter(el => el <= number).length;
  return result;
}

console.log(getIndexToIns(array, 8));

mehdibenhemdene • Oct 23 '19

Also a simple "Destroyer" implementation:

function destroyer(arr, ...params) {
  return arr.filter(el=>!params.includes(el));
}

Ram Newton • Mar 20 '21

function destroyer(arr, ...params){
    params_set = new Set(params);
    return arr.filter(item => !(params_set.has(item)))
};

.includes() does a linear search. Creating a set out of the parameters and using the .has() method will improve performance

Matt MacPherson • Aug 30 '19

Check out Edabit; I think you'll like it.

Ricardo Pedroso • Jan 24 '20

Thanks for the post, I had a lot of fun going through these exercises!

For the phone number one, I'll leave here my one line solution:

Have a nice day :)

Deepak Pal • Mar 16 '19

Good Post to read and thank for sharing the links

Florin Pop • Mar 16 '19

My pleasure! ☺️

Daniel Med • Mar 16 '19

Thank you so much for that , as a developer I think the only way to define you level is by solving coding challenges , hope we see some other challenges