Arrays in Programming Explained Simply — DSA for Beginners

Arrays are introduced as a core beginner-friendly data structure that stores elements in contiguous memory.

The brief explains how indexing enables fast random access and why lookups are typically O(1).

It compares common operations, showing that inserts and deletes can be costly, often O(n), because elements may need shifting.

The article also walks through basic JavaScript array methods and highlights when structures like linked lists, hash maps, or stacks may be better choices.