结构
- 数组
- 对象
- Map/Set
总结
数据结构是编程基础。### 数组
JS 中的列表，可使用 push/pop、slice 等操作。
对象
键值对集合，用于存储无序数据。
Map 和 Set
Map 保持插入顺序，Set 保存唯一值。
链表
可使用对象模拟单向或双向链表。
栈与队列
栈支持 LIFO，队列支持 FIFO，可通过数组实现。
树
DOM 本质上是一棵树，可使用递归遍历。
图
用邻接表或邻接矩阵表示，适用于网络关系。
性能提示
选择合适的数据结构可以提高算法效率，例如大型数据使用 Map 而不是对象。
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