📌 Data Structures at a Glance Mastering data structures is the backbone of programming and computer science. Here are the essentials every developer should know: ➡️ Arrays – Fast lookups, costly insertions/deletions ➡️ Linked Lists – Efficient insertions/deletions, slower lookups ➡️ Stacks – LIFO logic, used in undo operations & recursion ➡️ Queues – FIFO logic, ideal for scheduling & buffering ➡️ Hash Tables – Near O(1) lookups, key-value mapping ➡️ Heaps – Tree-based, quick min/max retrieval