DSA Tutorial #1: Arrays and Strings — The Foundation of Every Interview
Arrays and strings are the most common data structures in coding interviews. Almost every technical interview at Google, Meta, Amazon, or any tech company starts with an array or string problem. If you want to pass coding interviews, you need to master these two first. In this article, you will learn what arrays and strings are, their time complexities, and how to solve classic interview problems. We show every example in Kotlin, Python, and Go. ...