In particular, it really helps to understand the ideas in algorithmic efficiency and Big-Onotation.
特别是，算法效率和大0符号能帮助你真正的理解你的想法。
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Big-Onotation: computational complexity theory USES big-Onotation to describe how input-data size affects an algorithm's use of computational resources.
Big - o notation：计算复杂性理论使用大0符号描述输入数据大小如何影响计算资源对算法的使用。
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N --O So we introduced this notationbigO which generally refers to worst case.