Frontend Interview Question - Remove Duplicates from an Array - Javascript Question

Most Common Frontend Interview Question you might be asked.
This question is to check if you're able to quickly come up with a solution and as frontend developers are not required to be too much expert in DS and Algo, this works as a good starting point to judge a candidate.

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[shahhussain]

Thank you sir for this ❤️ and sir I love you annotation tool could you plz tell me the name of this annotation tool plz 🙏🏻

[parikshitrawat]

If we are allowed to use Set anyway, can't we just do like this instead of looping?

let arr = [0, 0, 1, 1];
console.log([...new Set(arr)]); //prints de-duplicated array

[abdulshakur]

Is it allowed to use import libraries like lodash in interview?

[dylan]

Your solution appears to be needlessly verbose.



const duplicates = [1, 2, 3, 3, 4, 5, 5, 6, 7, 7, 8, 9, 9];

function removeDuplicates(array) {
return [...new Set(array)];
}