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# Chapter 2.   Complexity Analysis

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

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!!! abstract

    Complexity analysis is like a space-time guide in the vast universe of algorithms.
   
    It leads us to explore deeply in the dimensions of time and space, in search of more elegant solutions.

## 本章内容

- [2.1 &nbsp; Evaluating Algorithm Efficiency](https://www.hello-algo.com/chapter_computational_complexity/performance_evaluation/)
- [2.2 &nbsp; Iteration and Recursion](https://www.hello-algo.com/chapter_computational_complexity/iteration_and_recursion/)
- [2.3 &nbsp; Time Complexity](https://www.hello-algo.com/chapter_computational_complexity/time_complexity/)
- [2.4 &nbsp; Space Complexity](https://www.hello-algo.com/chapter_computational_complexity/space_complexity/)
- [2.5 &nbsp; Summary](https://www.hello-algo.com/chapter_computational_complexity/summary/)