Conquer the JavaScript Interview: Integer Reverse [Beginner Skill Level]

Published: 02 December 2022
on channel: Covalence

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Link to this Playlist:
• Conquering the JavaScript Interview

Previous Video for String Reverse with Native Methods:
• Conquer the JavaScript Interview: Rev...

This is a part of my Algorithms and Data Structures playlist series. We cover a lot of common interview questions asked during whiteboards for entry level developers. Learning to master these takes time, practice, and pattern recognition. So I'll be helping you equip a toolbelt and filling it with as many tools as I can to help prepare you crush those interviews! Remember: "Luck is where practice meets opportunity."

In this video we cover an algorithm that isn't something you'd probably do in the real world (like most interview questions lol): integer reverse! The goal is simple, we need a function to accept any negative or positive integer, and return the reversed version of it as a number and maintaining its *sign*. We achieve this by converting to a string, reversing it with a loop or native methods, and then parsing it back to an integer with parseInt(). We can then use an if/else statement testing if the input number is negative, or using the Math.sign() function to determine if our input was indeed a negative number. Happy Hacking! HACK THE PLANET!

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