How to initialized a 2d vector

To be used in DP problems:

vector<vector<int>>dp; //global init

dp = vector<vector<int>>(n,vector<int>(m,0)); // local init for test cases
where,
	n, m = dimensions of matrix

Initialising 2d vector

// Initializing 2D vector "vect" with 
// values 
vector<vector<int> > vect{ { 1, 2, 3 }, 
                           { 4, 5, 6 }, 
                           { 7, 8, 9 } };

Initializing 2d vector

vector<vector<int> > vec( n , vector<int> (m, 0));

Initialize 2D vector

vector<vector<int> >    v2(8, vector<int>(5));

Source: dcs.bbk.ac.uk

Similar codes

0 vote239 views1 answer
Cpp tutorial
C++
21 votes215 views6 answers
Cin c++
C++
0 vote269 views2 answers
Is the c++ 20 char te same as the old one
C++
-1 vote220 views1 answer
Cast c++
C++
1 vote238 views1 answer
Ue4 bind function to button clicked c++
C++
0 vote233 views1 answer
C++ compare time
C++
0 vote198 views1 answer
C for loop decrement
C++
0 vote276 views1 answer
C++ fill array with 0
C++
1 vote230 views1 answer
How to read a comma delimited file into an array c++
C++
4 votes214 views3 answers
Pi in c++
C++