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2d vector initialization in cpp

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Concerned Cheetah answered on May 16, 2020 Popularity 9/10 Helpfulness 5/10

answer 2d vector initialization in cpp

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2d vector initialization in cpp

Comment

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

where: n is number of ROWS,
	   m is number of COLUMNS
       
So result will be ( Let n = 2, m = 3 )
  	[[ 0, 0, 0],
     [ 0, 0, 0]]
     		   ( 2 x 3 )

Popularity 9/10 Helpfulness 5/10 Language cpp

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Tags: 2d-vector c++ initialization

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Contributed on Jun 25 2022

Concerned Cheetah

0 Answers Avg Quality 2/10

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initialzing a 2d vector in cpp

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  // Create a vector containing n row and m columns
  vector<vector<int> > vec( n , vector<int> (m, 0));

Popularity 10/10 Helpfulness 8/10 Language cpp

Source: Grepper

Tags: 2d-vector 2d-v

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Contributed on Jan 27 2021

Precious Panda

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initialize 2d vector of ints c++

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auto M = 4;	// num of rows
auto N = 3; // num of cols in each row
auto default_value = 1; // default value of all int elements
std::vector<std::vector<int>> matrix(M, std::vector<int>(N, default_value));

Popularity 10/10 Helpfulness 6/10 Language cpp

Source: www.techiedelight.com

Tags: 2d-vector 2d-v

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Contributed on Sep 16 2020

Anxious Alligator

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initializing 2d vector

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// to make (n rows x m columns) 2D array, all initialized 
// with value 'k' (typeof(k) = T)
vector<vector<T>> vec( n , vector<T> (m, k));

Popularity 10/10 Helpfulness 5/10 Language cpp

Source: Grepper

Tags: 2d-vector 2d-v

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Contributed on Sep 09 2020

deadman

0 Answers Avg Quality 2/10

create a 2d vector in c++

Comment

// CPP program
#include <iostream>
#include <vector>
using namespace std;
int main()
{
    int n = 3;
    int m = 4;
 
    /*
    We create a 2D vector containing "n"
    elements each having the value "vector<int> (m, 0)".
    "vector<int> (m, 0)" means a vector having "m"
    elements each of value "0".
    Here these elements are vectors.
    */
    vector<vector<int>> vec( n , vector<int> (m, 0));
 
    for(int i = 0; i < n; i++)
    {
        for(int j = 0; j < m; j++)
        {
            cout << vec[i][j] << " ";
        }
        cout<< endl;
    }
     
    return 0;
}

Popularity 10/10 Helpfulness 4/10 Language cpp

Source: www.geeksforgeeks.org

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Contributed on Mar 09 2022

pranav bansal

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initialize 2D vector

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

Popularity 9/10 Helpfulness 4/10 Language cpp

Source: www.dcs.bbk.ac.uk

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Contributed on Jun 06 2021

Drab Dogfish

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initialising 2d vector

Comment

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

Popularity 10/10 Helpfulness 2/10 Language cpp

Source: Grepper

Tags: 2d-vector 2d-v

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Contributed on May 16 2020

pirateksh

0 Answers Avg Quality 2/10

2d vector initialization in cpp

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initialzing a 2d vector in cpp

initialize 2d vector of ints c++

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