2. Example Codes for Merging/Flattening Arrays in JavaScript
   Understanding the Concept:Array of arrays: A multidimensional array where each element is itself an array.Merging/flattening: Combining all elements of the inner arrays into a single
3. Understanding the Code Examples for Creating 2D Arrays in JavaScript
   What is a 2D Array?Imagine a spreadsheet. It has rows and columns. A 2D array is like a spreadsheet in programming. It's a structure where data is organized into rows and columns