C ++：交换两个不同向量的两个元素(C++: Swap two elements of two different vectors)

C ++：交换两个不同向量的两个元素(C++: Swap two elements of two different vectors) std::vector<int> v1 = {1,3,6}; std::vector<int> v2 = {2,4,7};

交换v1 [m]与v2 [n]

而不是复制，然后只是覆盖这两个元素

我试过了

std::swap(v1.begin() + m, v2.begin() + n);

但那不起作用

std::vector<int> v1 = {1,3,6}; std::vector<int> v2 = {2,4,7};

swap v1[m] with v2[n]

instead of copying and then just overwriting both elements

I tried

std::swap(v1.begin() + m, v2.begin() + n);

but that didn't work

最满意答案

std::swap期望引用，而不是迭代器：

std::swap(v1[m], v2[n]);

std::swap expects references, not iterators:

std::swap(v1[m], v2[n]);