在线（单遍）算法
在线算法（又称单遍算法）是一种仅需对数据流进行一次遍历即可完成计算的高效方法，无需将所有数据存储在内存中。这类算法在实时数据处理和大规模数据集场景下尤为关键，能够有效节省存储空间和计算资源。本文介绍了在线算法的核心思想、典型应用场景及其相比传统批量算法的优势。
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