数据结构位图云解析DNS 的相关内容

文章 2023-12-28 来自：开发者社区

【数据结构】哈希经典应用：位图——[深度解析]（8）

一.位图的基本概念所谓位图，就是用每一位来存放某种状态，适用于海量数据，数据无重复的场景。通常是用来判断某个数据存不存在的二.位图的原理哈希—— 直接定址法例：在实际场景中，我们的机器一般是小端机（从左到右，从大到小排布）所以真正的场景一般如下：小端机性质证明：三.位图（bitset）的代码实现（逐过程解读）【1】位图的文档查看我们可以重点关注红圈圈出的三个位图常用函数【2】把X映射的那....

文章 2023-12-28 来自：开发者社区

【数据结构】哈希经典应用：布隆过滤器(哈希+位图)——[深度解析]（9）

一.布隆过滤器产生的前提我们在使用新闻客户端看新闻时，它会给我们不停地推荐新的内容，它每次推荐时要去重，去掉那些已经看过的内容。用服务器记录了用户看过的所有历史记录，当推荐系统推荐新闻时会从每个用户的历史记录里进行筛选，过滤掉那些已经存在的记录。如何快速查找呢？用哈希表存储用户记录，缺点：浪费空间用位图存储用户记录，缺点：位图一般只能处理整形，如果内容编号是字符串，就无法处理了。将哈希与位图....

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