Welcome! Today, I am excited to guide you through an intriguing task involving arrays: pairing up 'opposite' elements. Apart from arrays, we will dive deeper into learning about lists in C#. Lists offer more flexibility than arrays because they can dynamically resize and provide various useful methods for manipulating the collection of elements. This lesson will also include deeper explorations with tasks, providing an excellent opportunity to refine your array-handling and list-handling skills. Are you ready to start? Let's dive right in!

Before diving into the main lesson, let's briefly understand what a list is in C#. A list is a collection of objects that can be dynamically resized. Unlike arrays, lists are part of the System.Collections.Generic namespace and provide more flexibility:

• Dynamic Resizing: Lists can grow or shrink in size as needed.
• Additional Methods: Lists offer a rich set of methods such as Add, Remove, Insert, and more for easier manipulation of elements.

Here’s an example of how to declare and use a list in C#: