This section will walk you through the basics of data structures and will answer your query about why we need to learn data structures and algorithms. You will also learn about the efficiencies of algorithms and how to measure them. Yes, you read that right: Algorithms also have efficiencies, given that they are based on time complexities (execution time needed) and space complexities (memory footprints).

The following chapters will be covered in this section:

• Chapter 1, A Walk-through – Data Structures and Algorithms
• Chapter 2, Arrays – The First Step to Grouping Data