how to get size of 2d vector in c++
myVector[
Vector[0, 4, 2, 5],
Vector[1, 4, 2]
];
/*When you call for myVector[1].size() it would return 3 and [0] would return 4.
For the amount of rows (int vectors) in the 2d vector, you can just use myVector.size()
You can run this to see it in actions*/resize 2d vector c++
myVector.resize(row_count, vector<int>(column_count, initialization_value));
//Example1: create a 2D integer vector with 5 rows and 5 columns having "1"
myVector.resize(5, vector<int>(5, 1));
//Ex2
myVector.resize(n);
for (int i = 0; i < n; ++i)
myVector[i].resize(m);Copyright © 2021 Codeinu
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