"vector of vector c++" Code Answer's
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get values from a vector of vectors c++
#include <iostream>
#include <vector>
using namespace std;
int main()
{
vector<vector<int> > buff;
for(int i = 0; i < 10; i++)
{
vector<int> temp; // create an array, don't work directly on buff yet.
for(int j = 0; j < 10; j++)
temp.push_back(i);
buff.push_back(temp); // Store the array in the buffer
}
for(int i = 0; i < buff.size(); ++i)
{
for(int j = 0; j < buff[i].size(); ++j)
cout << buff[i][j];
cout << endl;
}
return 0;
}
Source: www.cplusplus.com
how to make a 2d vector in c++
// Create a vector containing n
//vectors of size m, all u=initialized with 0
vector<vector<int> > vec( n , vector<int> (m, 0));
vector of vectors c++
vector<vector<data_type>> vec;
Source: www.geeksforgeeks.org
vector of vectors c++
#include <iostream>
#include <vector>
using namespace std;
int main()
{
int n = 5;
int m = 7;
//Create a vector containing n vectors of size m and initalize them to 0.
vector<vector<int>> vec(n, vector<int>(m, 0));
for (int i = 0; i < vec.size(); i++) //print them out
{
for (int j = 0; j < vec[i].size(); j++)
{
cout << vec[i][j] << " ";
}
cout << endl;
}
}
vector of vectors c++
vector<vector<int>> matrix(x, vector<int>(y));
This creates a vector of x size y vectors, filled with 0's.
Source: stackoverflow.com
how to create a vector from elements of an existing vector in cpp
// Initializing vector with values
vector<int> vect1{1, 2, 3, 4};
// Declaring another vector
vector<int> vect2;
// Copying vector by assign function
vect2.assign(vect1.begin(), vect1.end());
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