for(vector<int>::iterator it=arr.begin(); it!=arr.end(); ){if(* it ==0) { it=arr.erase(it); }else{++it; } } 4、存放智能指针的问题 ①、vector保存原始指针:vector析构时不会释放指针指向的堆对象 ②、vector保存智能指针:vector析构时会释放智能指针所指向的对象,但是如果将所有权转移给...
std::vector<int>::iterator iter = nVec.begin(); for(; iter != nVec.end();) { if(*iter == 0) iter = nVec.erase(iter); else iter++; } 删除容器内某一个特定的元素,编写方式可为: std::vector<int>::iterator iter = std::find(nVec.begin(),nVec.end(),5); if(iter != nVec.e...
iterator) 的容器（如 std::vector, std::string, std::deque）container.erase(std::remove(container...
其它,如构造方法不一致,Vector可以通过构造方法初始化capacityIncrement,另外还有其它一些方法,如indexOf方法,Vector支持从指定位置开始搜索查找;另外,Vector还有一些功能重复的冗余方法,如addElement,setElementAt方法,之所以这样,是由于历史原因,像addElement方法是以前遗留的,当集合框架引进的时候,Vector加入集合大家族,改成实...
问在std::vector中查找索引EN版权声明：本文内容由互联网用户自发贡献，该文观点仅代表作者本人。本站仅...
std::vector::iterator失效性分析 #include<vector>void vectest() { std::vector<int>vi; for (int i = 1; i < 10; ++i) { vi.push_back(i); } //std::vector<decltype(vi.begin())>iter_vector; std::vector<std::vector<int>::iterator> iter_vector;...
问使用索引擦除std::vector中的元素EN我认为，如果您只是对索引进行排序，然后从向量中从最高到最低...
vector<bool> space-efficient dynamic bitset (class template specialization) Iterator invalidation OperationsInvalidated All read only operationsNever. swap,std::swapend() clear,operator=,assignAlways. reserve,shrink_to_fitIf the vector changed capacity, all of them. If not, none. ...
std::vector::front reference front();const_reference front() const; Access first element Returns a reference to the first element in thevector. Unlike membervector::begin, which returns an iterator to this same element, this function returns a direct reference. ...
std::vector::back reference back();const_reference back() const; Access last element Returns a reference to the last element in thevector. Unlike membervector::end, which returns an iterator just past this element, this function returns a direct reference. ...