STL: doubly array's x[n][n]
January 26, 2003 01:53 PM
I need help making a double array. I believe you can do it by doing something like
vector(vector(int)) which would make a vector of a vector of int's.
What I want to do is have the power of vector but also be able to access the members like this
x[10][2] = 4;
is that possible? If not vector anything else in the STL?
If it is possible can you give me a small example to look at?
EDIT: html tags messed up my code.. all > and < are now ) and (
[edited by - Whoknewb on January 26, 2003 3:07:29 PM]
1,658
January 26, 2003 02:11 PM
#include <vector>using namespace std;typedef vector<vector<int> > IntVector2D; // with a space between the >> otherwise it is parsed as a right shift.int rows = 10, columns = 20;IntVector2D myvec( rows, vector<int>( columns ) );myvec[5][10] = 1000; For more details, refer to your C++ manual.
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January 27, 2003 12:36 PM
That worked great Fruny but I''m having more problems now with resize function.
Data.resize(y, vector(x));
That only sort of works. It resizes the y value but doesn''t resize to the new x value.
Data.resize(y, vector(x));
That only sort of works. It resizes the y value but doesn''t resize to the new x value.
1,298
January 28, 2003 01:42 AM
int rows = 10, columns = 20; for(IntVector2D::iterator c = myvec.begin(); c != myvec.end(); ++c) c->resize(columns); myvec.resize(rows, std::vector<int>(columns));
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