Initialize array of vectors

Question

I am trying to initialize an array of vectors. How can I do that ?

The following code is wrong:

vector<int> A[] = vector<int>()[10];

Answer 1

std::array<std::vector<int>, 10>

这将为您提供一个包含 10 个向量的数组。

Answer 2

Try just

vector<int> A[10];

It will default-initialize all ten vector objects.

Answer 3

vector<int>* A = new vector<int>[10];