概念
An unordered_map is a data structure that stores key-value pairs. It is a hash table that uses a hashing algorithm to map keys to values. Unlike a regular hash table, unordered_map does not store keys in the order they were inserted, making them more suitable for use cases where the order of keys does not matter.
分类
There are two main types of unordered_maps:
优势
Unordered maps offer several advantages over regular maps:
应用场景
Unordered maps are commonly used in situations where speed and memory efficiency are critical, such as in game development, image processing, and data analysis. They are also used in algorithms that require fast lookups, such as in hash tables and hash maps.
推荐的腾讯云相关产品
产品介绍链接地址
云+社区沙龙online [国产数据库]
云+社区沙龙online [技术应变力]
云+社区技术沙龙[第16期]
腾讯自动驾驶系列公开课
云+社区沙龙online
云+社区技术沙龙[第23期]
领取专属 10元无门槛券
手把手带您无忧上云