List and vector in Python and in C++

In Python, initializing a list is simple:

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N = 5
nested_lists = [[] for _ in range(N)]
list_with_zeros = [0]*N
 

In C++, vector can be used as an equivalent to list in python.

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#include <vector>

int main() {
	int N = 5;
	vector<vector<int>> nested_vector(N);
	vector<int> vector_with_zeros(N, 0);
	return 0;
}
 

vector in C++ is (like list in Python) dynamically allocated, so it can be initialized without specifying its size or values:

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vector<int> v;
for (int i=0; i < N; ++i) {
	v.push_back(0);
};
 

But this code vector<int> vector_with_zeros(N, 0); obviously looks better than the for-loop initialization.

Comparison Table