Question

我想填充字符串向量的向量，以便它是多维的。我有以下向量：

[<start>, The <object> <verb> tonight.]
[<object>, waves, big yellow flowers, slugs]
[<verb>, sigh <adverb>, portend like <object>, die <adverb>]
[<adverb>, warily, grumpily]

我想以这种方式将它们添加到矢量中：

vector<vector<string>> vector2;

这样看起来像这样：

vector2[0]: [<start>, The <object> <verb> tonight.]
vector2[1]: [<object>, waves, big yellow flowers, slugs]
vector2[2]: [<verb>, sigh <adverb>, portend like <object>, die <adverb>]
vector2[3]: [<adverb>, warily, grumpily]

这是我的代码：

    vector<vector<string>> vector2;

    //the populated vector 1 is not shown here
    for(int i = 0; i < vector1.size(); i++)
    {
        vector<string> vs = split_def(vector1[i]);
        //calls a function that splits a string at index i of vector1
       //by a certain character and stores the fragments in vector vs

        cout << vs << endl;
       //Note: I have an overloaded output operator function for vectors

        /*for(int j = 0; j < vs.size(); j++)
        {
            vector2[i].push_back(vs[j]);
            cout << vector2[i][j] << endl;
        }*/

    }

我的程序崩溃的部分是我在/ * * /之间注释掉的部分。在此之前的一切工作。我假设我的逻辑是正确的，它只是语法错误。填充该向量是给我这个问题的原因。谁知道我做错了什么？

Answer 1

在我看来，您需要将您正在创建的矢量添加到vector2：

vector<vector<string>> vector2;

//the populated vector 1 is not shown here
for(int i = 0; i < vector1.size(); i++)
{
    vector<string> vs = split_def(vector1[i]);
    //calls a function that splits a string at index i of vector1
   //by a certain character and stores the fragments in vector vs

    cout << vs << endl;
   //Note: I have an overloaded output operator function for vectors

   vector2.emplace_back(vs);

}

C ++调试：二维向量

1 个答案: