Using Two-Pointer Technique to Optimize Algorithm Solutions

Photo by Max Duzij on Unsplash

When dealing with strings and arrays in the context of algorithm challenges, our first instinct usually revolves around built-in methods.

Let’s take a look at this seemingly easy problem:

/* Description:
Given a sorted (ascending) array of integers, 
write a function that returns a sorted (ascending) array 
which contains the square of…