Hello, aspiring TypeScript developers!

In today's lesson, we're diving into merge sort, a powerful algorithm for organizing data efficiently. Picture shuffling a deck of cards and then rearranging them in order. Merge sort achieves this with data on a grand scale, making it an excellent choice for sorting large datasets. We're going to explore and implement this technique using TypeScript.

First, let's construct a merge() function in TypeScript. This function merges two sorted arrays into a single sorted array. Think of it as combining two sorted stacks of cards into one sorted stack.

The merge() function above takes two sorted arrays (left and right) and combines them into one sorted array (resultArray).

Seemingly tricky, the code is very straightforward:

1. We place two pointers, leftIndex and , at the beginning of the and arrays.