how to make a 2d vector in c++

vector< vector<int>> a(rows, vector<int> (cols));

3.6
5
A-312 69370 points

                                    2D vector

3.6 (5 Votes)
0
4
10
Phoenix Logan 186120 points

                                    // Create a vector containing n 
//vectors of size m, all u=initialized with 0
vector&lt;vector&lt;int&gt; &gt; vec( n , vector&lt;int&gt; (m, 0));  

4 (11 Votes)
0
4.29
7
Lionel Aguero 33605 points

                                    // Initializing 2D vector &quot;vect&quot; with 
// values 
vector&lt;vector&lt;int&gt; &gt; vect{ { 1, 2, 3 }, 
                           { 4, 5, 6 }, 
                           { 7, 8, 9 } }; 

4.29 (7 Votes)
0
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