Where do we use Stacks in real life applications?
Stacks power Undo/Redo functionalities, browser history, and function call execution in programming languages (the call stack).
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Graphs are used in social networks (friend recommendations), GPS navigation systems (shortest paths), and network routing protocols.
Trees are used in database indexing (B-trees), file systems, autocomplete features (Tries), and representing the HTML DOM in browsers.
Hash Maps are used for fast data retrieval, powering things like caching systems (Redis), database indexing, and symbol tables in compilers.
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