[队列：先入先出的数据结构](%E9%98%9F%E5%88%97%EF%BC%9A%E5%85%88%E5%85%A5%E5%85%88%E5%87%BA%E7%9A%84%E6%95%B0%E6%8D%AE%E7%BB%93%E6%9E%84.md) [栈: 后入先出的数据结构](%E6%A0%88-%E5%90%8E%E5%85%A5%E5%85%88%E5%87%BA%E7%9A%84%E6%95%B0%E6%8D%AE%E7%BB%93%E6%9E%84.md)