// 删除向量中的第三个元素 myVector.erase(myVector.begin()+2); // 输出删除元素后的向量 std::cout<<"Elements in the vector after erasing: "; for(intelement:myVector){ std::cout<<element<<" "; } std::cout<<std::endl; // 清空向量并输出 myVector.clear(); std::cout<<"Size of ...
问调用vector.erase() cpp时出现异常EN一.异常信息 The 'cursor' option is required, except for agg...
1. Usingstd::erasefunction One way to erase elements from a vector in C++ is to use theerase()function from thestd::vectorclass. This function removes an element or a range of elements from a vector, and returns an iterator pointing to the element following the last removed element. The...
// C++ program to illustrate the// iterators in vector#include<iostream>#include<vector>usingnamespacestd;intmain(){vector<int>g1;//int可以换成其他数据类型如double,甚至struct等for(inti=1;i<=5;i++)g1.push_back(i);cout<<"Output of begin and end: ";for(autoi=g1.begin();i!=g1....
// vector_erase.cpp // compile with: /EHsc #include <vector> #include <iostream> using namespace std; int main() { vector <int> vec; vector <int>::iterator pos; vec.push_back(10); vec.push_back(20); vec.push_back(30); vec.push_back(40); vec.push_back(50); cout << "Cap...
另外,作为题外话,我们需要注意一下vector的删除(erase)操作。由于vector需要能以下标方式取数据,所以必须时刻保证连续的存储空间,对应于实现上,即,当删除vector中间的一个成员时,这个成员后面的所有成员,会以原顺序向前全部拷贝过来。有兴趣的朋友,可以用这个例子测试一下。
vector<string> cars = {"Volvo", "BMW", "Ford", "Mazda"}; cars.erase(cars.begin() + 1); for (string car : cars) { cout << car << "\n"; }Try it Yourself » Definition and UsageThe erase() function removes an element or a range of elements from a vector. The elements ...
[std::vector::erase](http://www.cplusplus.com/reference/vector/vector/erase/) 删除, 参数是迭代器 highlighter- Go // erase the 6th elementmyvector.erase (myvector.begin()+5);// erase the first 3 elements:myvector.erase (myvector.begin(),myvector.begin()+3) ...
iter = veci.erase(iter); } 这段代码也是错误的:1)无法删除两个连续的"3"; 2)当3位于vector最后位置的时候,也会出错(在veci.end()上执行 ++ 操作) 正确的代码应该为: for(vector<int>::iterator iter=veci.begin(); iter!=veci.end(); ) ...
erase(end, vec.end()); 同样如果是C++20可以使用std::erase_if来完成这个操作,std::erase_if也是通过std::remove_if和std::vector::erase的组合实现。在使用时,std::erase_if可以让代码更清晰和易读,因为它将需要的操作合并成一个函数调用。在性能上并没有什么差异。 std::erase_if(vec, [&i](const...