初始化二维矢量.在CPP中 [英] Initialize a 2 Dimensional vector<int> in CPP

问题描述

如何在C ++中初始化二维 vector< int> ?

How to initialize a 2 dimensional vector<int> in C++?

例如，我有4个数组，每个数组的长度为8个整数，如下所示

For instance I have 4 arrays each of length 8 ints, like the below

int a1[] = {1,2,3,4,5,6,7,8};
int a2[] = {1,2,3,4,9,10,11,12};
int a3[] = {1,2,5,6,9,10,13,14};
int a4[] = {1,3,5,7,9,11,13,15};

我有这个

vector< vector <int> > aa (4);

aa[i] (a1,a1+8);

但这会产生错误.我什至尝试将数组a1提供给v1并将v1传递给 aa [i] ，但仍然失败.

But this gives error. I even tried supplying the array a1 to v1 and passed v1 to aa[i] , still it fails.

那么初始化二维 vector< int>

推荐答案

aa[i].assign(a1,a1+8);

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