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Sergiy Bondaryev
Sergiy Bondaryev

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Interactive Big O Notation Guide

I created an interactive guide to help build intuition for recognizing time complexity from code patterns.
What's inside:

  • Live code editor with visual feedback as you adjust input sizes
  • Examples ranging from O(1) to O(n!) with interactive visualizations
  • Coverage of core principles like "constants drop out" and "nested operations multiply"
  • Master Theorem breakdown with practical examples
  • Real algorithm analysis (merge sort, binary search, etc.)

The idea is simple: add op() markers to your code and watch the complexity curves appear as n increases. You can experiment with loops, recursion, or drop in your own algorithms to see how they scale.
Built with Next.js and deployed at https://sbondaryev.dev/articles/big-o-notation.

Feedback welcome!

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