JavaScript Data Structure Interview Questions (and Answers)

JavaScript Data Structure Interview Questions (and Answers)

JavaScript Data Structure Interview Questions (and Answers) I put together some basic DS questions asked for a JavaScript interview. Array. 1. Remove all even integers from an array. If it’s odd then we push that into a separate array.

If you have been in any interview process, then you know that during a technical interview process data structure questions must be asked. Actually, it’s a very common and most important topic for any interview process. With DS questions an interviewer can judge a candidate’s capability. In this article, I put together some basic DS questions asked for a JavaScript interview.

Array

1. Remove all even integers from an array

Input: [4, 1, 9, 10, 15, 22, 5, 14]

Output: [4, 10, 22, 14]

This problem has multiple solutions, It totally depends on a candidate. Here, I provide two solutions with an explanation.

Solution — 1

const inputData = [4, 1, 9, 10, 15, 22, 5, 14]
removeEvenNumbers (inputData) => {
    let odds = []
    for (let number of inputData) {
        if (number % 2 != 0) odds.push(number)
    }
  return odds
}
console.log(removeEvenNumbers(inputData)))
// [4, 10, 22, 14]

In the above solution, we iterate through each element and check if it’s even or odd. If it’s odd then we push that into a separate array. So the time complexity of this problem is** O(n)O(n).**

programming javascript coding

Bootstrap 5 Complete Course with Examples

Bootstrap 5 Tutorial - Bootstrap 5 Crash Course for Beginners

Nest.JS Tutorial for Beginners

Hello Vue 3: A First Look at Vue 3 and the Composition API

Building a simple Applications with Vue 3

Deno Crash Course: Explore Deno and Create a full REST API with Deno

How to Build a Real-time Chat App with Deno and WebSockets

Convert HTML to Markdown Online

HTML entity encoder decoder Online

Principles of Functional Programming in JavaScript That Will Make Your Coding Life Easier

Who else loves to write side-effects-free functions? I think we, as programmers, all do. Today, in this story, I will walk you through the basic principles of functional programming that will make your coding life easier.

4 Ways You Can Get Rid of Dirty Side Effects for Cleaner Code in JavaScript

4 Ways You Can Get Rid of Dirty Side Effects for Cleaner Code in JavaScript. Bugs are born in many ways. Creating side effects is one of them. Some people say side effects are evil, some say they’re not.

Who Else Wants to Write Clean JavaScript Code?

Who Else Wants to Write Clean JavaScript Code? 7 Tips to Make Your Coworkers Fall in Love With Your Code.

Code Formatting with Prettier in Visual Studio Code

Formatting code consistently is a pain, especially when working on a team. The beauty of modern-day web development is that the tooling has gotten so much better! In this article, we will look at setting up Prettier to automatically format your code in Visual Studio Code.

Top 15 Simple Coding Techniques to Get Your Tasks Done with Shorter Code in JavaScript

Don’t waste time writing long code while you can make it short, yet clearer and easier to read. In this Javascript tutorial, we'll discuss 15 Simple Coding Techniques to Get Your Tasks Done with Shorter Code in JavaScript