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# Chapter 2.   Complexity analysis

![Complexity analysis](../assets/covers/chapter_complexity_analysis.jpg){ class="cover-image" }

!!! abstract

    Complexity analysis is like a space-time navigator in the vast universe of algorithms.

    It guides us in exploring deeper within the the dimensions of time and space, seeking more elegant solutions.

## Chapter Contents

- [2.1   Algorithm efficiency assessment](https://www.hello-algo.com/en/chapter_computational_complexity/performance_evaluation/)
- [2.2   Iteration and recursion](https://www.hello-algo.com/en/chapter_computational_complexity/iteration_and_recursion/)
- [2.3   Time complexity](https://www.hello-algo.com/en/chapter_computational_complexity/time_complexity/)
- [2.4   Space complexity](https://www.hello-algo.com/en/chapter_computational_complexity/space_complexity/)
- [2.5   Summary](https://www.hello-algo.com/en/chapter_computational_complexity/summary/)