--- title: "#big-o-notation articles | Hashnode" description: "Explore 123 articles tagged #big-o-notation on Hashnode. Tutorials, guides, and how-tos from the community." url: "https://hashnode.com/tag/big-o-notation" --- Tag # #big-o-notation 123 posts · 3 followers [Mihai Marinescu](https://hashnode.com/@mmarinescu) · [Aug 14](https://hashnode.com/posts/big-o-notation/6a7f5ace5f226c619c2205ab) ### [Big O notation](https://featuringcode.com/big-o-notation?utm_source=hashnode&utm_medium=feed) Or how many items can your function process in a second 3 min read · [featuringcode.com](https://featuringcode.com/big-o-notation?utm_source=hashnode&utm_medium=feed) [Gazmend Halili](https://hashnode.com/@gazi04) · [May 18](https://hashnode.com/posts/merge-sort-vs-quick-sort-in-c-which-is-faster-in-practice/6a0ae8f3e4a28cf570fe5f9f) ### [Merge Sort vs Quick Sort in C++ — Which Is Faster in Practice?](https://merge-vs-quick.hashnode.dev/merge-sort-vs-quick-sort-in-c-which-is-faster-in-practice?utm_source=hashnode&utm_medium=feed) A C++ showdown between Quick Sort and Merge Sort, proving why Big O constants actually matter in the real world. 8 min read · [merge-vs-quick.hashnode.dev](https://merge-vs-quick.hashnode.dev/merge-sort-vs-quick-sort-in-c-which-is-faster-in-practice?utm_source=hashnode&utm_medium=feed) [Sakshi Kumari](https://hashnode.com/@Sakshi5073) · [Jan 26](https://hashnode.com/posts/time-complexity/6976f6f42fb702ebd7345822) ### [Time Complexity](https://time-complexity-detail.hashnode.dev/time-complexity?utm_source=hashnode&utm_medium=feed) Big-O ,Big-theta and Big-omega 3 min read · [time-complexity-detail.hashnode.dev](https://time-complexity-detail.hashnode.dev/time-complexity?utm_source=hashnode&utm_medium=feed) [Utkarsh Gaur](https://hashnode.com/@ugaurx) · [Jan 12](https://hashnode.com/posts/beyond-big-o-rethinking-how-we-measure-algorithms-in-real-systems/696a7ffa22a0be7674f9249d) ### [Beyond Big-O: Rethinking How We Measure Algorithms in Real Systems](https://hexplain.hashnode.dev/beyond-big-o-rethinking-how-we-measure-algorithms-in-real-systems?utm_source=hashnode&utm_medium=feed) Big-O notation has been drilled into us since our first data structures class. O(1) good.O(n) acceptable.O(n log n) fine.O(n²) bad. We memorize it for interviews, use it to compare algorithms, and treat it as the final word on performance. But once y... 3 min read · [hexplain.hashnode.dev](https://hexplain.hashnode.dev/beyond-big-o-rethinking-how-we-measure-algorithms-in-real-systems?utm_source=hashnode&utm_medium=feed) [Shashank Reddy](https://hashnode.com/@3Qverse) · [Dec 23, 2025](https://hashnode.com/posts/why-time-complexity-matters-with-simple-examples/694ac76adb963a870f78b1e5) ### [Why Time Complexity Matters (With Simple Examples)](https://3qverse.hashnode.dev/why-time-complexity-matters-with-simple-examples?utm_source=hashnode&utm_medium=feed) A beginner-friendly guide to time complexity explaining O(1), O(n), and O(n²) with simple examples, code snippets, and real-world analogies. 9 min read · [3qverse.hashnode.dev](https://3qverse.hashnode.dev/why-time-complexity-matters-with-simple-examples?utm_source=hashnode&utm_medium=feed) [Joel Tikoo](https://hashnode.com/@joeltikoo) · [Dec 2, 2025](https://hashnode.com/posts/why-big-o-actually-matters-even-if-you-think-youll-never-use-it/692f30414c23aeae602abc3c) ### [Why Big-O Actually Matters (Even If You Think You'll Never Use It)](https://joelcodes.hashnode.dev/why-big-o-actually-matters-even-if-you-think-youll-never-use-it?utm_source=hashnode&utm_medium=feed) If you’re anything like me, the first time someone explained Big-O notation, it felt like they were trying to measure my code using math from another galaxy. “This algorithm is O(n log n).”“Bro… I just want my code to work.” Same energy. But the deep... 3 min read · [joelcodes.hashnode.dev](https://joelcodes.hashnode.dev/why-big-o-actually-matters-even-if-you-think-youll-never-use-it?utm_source=hashnode&utm_medium=feed) [Ferdus Rhaman Khan](https://hashnode.com/@ferdus615) · [Nov 29, 2025](https://hashnode.com/posts/time-and-space-complexities-in-simple-way/692b6bc935bac505b45bf602) ### [Time and Space Complexities in Simple Way!](https://ferdus615.hashnode.dev/time-and-space-complexities-in-simple-way?utm_source=hashnode&utm_medium=feed) This article explore time & space complexity in computer scinece in a very simple and beginner friendly manner. 11 min read · [ferdus615.hashnode.dev](https://ferdus615.hashnode.dev/time-and-space-complexities-in-simple-way?utm_source=hashnode&utm_medium=feed) [Hack United](https://hashnode.com/@hackunited) · [Sep 11, 2025](https://hashnode.com/posts/big-o-notation-what-and-why-it-matters/68c258ea16865f0b69100bf5) ### [Big O Notation: What and Why It Matters?](https://blog.hackunited.org/big-o-notation-what-and-why-it-matters?utm_source=hashnode&utm_medium=feed) When you write code, there are a multitude of ways to solve problems and make your ideas come to life. But there’s one thing to note: We are programmers! We are LAZY! This is why whenever we write code, we should always double-check that it’s the sim... 3 min read · [blog.hackunited.org](https://blog.hackunited.org/big-o-notation-what-and-why-it-matters?utm_source=hashnode&utm_medium=feed) [Víctor Marrero Carrillo](https://hashnode.com/@victormc) · [Aug 26, 2025](https://hashnode.com/posts/el-secreto-de-los-programas-rapidos-entendiendo-big-o-notation/68adeaa0bc8f0cc9105a4d46) ### [El Secreto de los Programas Rápidos: Entendiendo Big O Notation](https://victormc.hashnode.dev/el-secreto-de-los-programas-rapidos-entendiendo-big-o-notation?utm_source=hashnode&utm_medium=feed) Aprende Big O Notation para evaluar la eficiencia y mejorar la velocidad de algoritmos con ejemplos prácticos y explicaciones simples 5 min read · [victormc.hashnode.dev](https://victormc.hashnode.dev/el-secreto-de-los-programas-rapidos-entendiendo-big-o-notation?utm_source=hashnode&utm_medium=feed) [Víctor Marrero Carrillo](https://hashnode.com/@victormc) · [Aug 26, 2025](https://hashnode.com/posts/the-secret-of-fast-programs-understanding-big-o-notation/68adf4e3d54b36ce2f650850) ### [The secret of fast programs: Understanding Big O Notation](https://victormc.hashnode.dev/the-secret-of-fast-programs-understanding-big-o-notation?utm_source=hashnode&utm_medium=feed) Learn the fundamentals of Big O Notation and how it impacts program speed, including examples of common algorithms and their complexities 5 min read · [victormc.hashnode.dev](https://victormc.hashnode.dev/the-secret-of-fast-programs-understanding-big-o-notation?utm_source=hashnode&utm_medium=feed)