what is the length of a vector code example
Example 1: vector length c++
#include <vector>
int main () {
std::vector<int> v;
auto size = v.size();
}
Example 2: vector length formula
||v|| = sqrt(a^2+b^2)
Example 3: numpy how to length of vector
>>> x = np.zeros((3, 5, 2), dtype=np.complex128)
>>> x.size
30
>>> np.prod(x.shape)
30