C ++ std :: stack遍历 [英] C++ std::stack Traversal

查看:226
本文介绍了C ++ std :: stack遍历的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!

问题描述

我使用 std :: stack 为一个项目,我需要旅行,以检查相同的值。我检查了成员函数,但是我找不到一个合适的任务。



第一个想法是使用一个副本堆栈,但程序可能浪费很多这种情况下的额外空间,而不是使用用户定义的堆栈类在项目的这一级很重要(是的,我犯了一个设计错误...)。




避免 std :: stack ,它只是一个无用的包装器,淹没了底层容器的接口。使用 std :: vector push_back / pop_back 插入插入/删除(插入/删除在末尾被摊销O(1))或 std :: deque ,因此你可以推/弹出没有重大更改表现(仍然摊销O(1))。在这两种情况下,你可以使用他们的随机访问迭代器来遍历所有的元素。



std :: queue :无用,直接使用 push_back 直接使用 std :: deque not < c> / pop_front


I am using std::stack for an project and I need to travel on it for checking same values. I checked member functions but, I could not find an appropriate one for this task.

The first idea that came up is using a copy stack but, the program might waste lots of extra space in this case, and not using an user-defined stack class is important at this level of the project (Yeah, I made a design mistake... ).

So, any idea?

Thank you!

解决方案

Avoid std::stack, it's just a useless wrapper that dumbs down the interface of the underlying container. Use a std::vector with push_back/pop_back for insert insertion/removal (insertion/removal at the end is amortized O(1)) or std::deque, whence you can push/pop on either side without significant changes in performances (still amortized O(1)). In both cases you can walk all the elements using their random-access iterators.

(the same holds for std::queue: it's useless, use directly std::deque (not vector) with push_back/pop_front)

这篇关于C ++ std :: stack遍历的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!

查看全文
登录 关闭
扫码关注1秒登录
发送“验证码”获取 | 15天全站免登陆