Copying a Vector in C++

In C++, you can copy the contents of one vector to another by using the assignment operator (=) or the assign() function. Here’s an example:

#include <iostream>
#include <vector>

int main() {
    std::vector<int> sourceVec = {1, 2, 3, 4, 5};
    std::vector<int> destVec;

    // Using the assignment operator
    destVec = sourceVec;

    // Using the assign() function
    // destVec.assign(sourceVec.begin(), sourceVec.end());

    // Print the contents of destVec
    for (int num : destVec) {
        std::cout << num << " ";
    }

    return 0;
}

In the above example, we have a source vector sourceVec with elements {1, 2, 3, 4, 5}. We then copy this vector to an empty destination vector destVec using the assignment operator (=). We can also use the assign() function to achieve the same result.

Copying a Vector in Python

In Python, you can copy a vector (list) to another vector by using the copy() method or by using the [:] slicing technique. Here’s an example:

sourceVec = [1, 2, 3, 4, 5]
destVec = []

# Using the copy() method
destVec = sourceVec.copy()

# Using the [:] slicing technique
# destVec = sourceVec[:]

# Print the contents of destVec
for num in destVec:
    print(num, end=" ")

In the above example, we have a source vector sourceVec with elements [1, 2, 3, 4, 5]. We then copy this vector to an empty destination vector destVec using either the copy() method or the [:] slicing technique.

Conclusion

Copying a vector to another vector is a common operation when working with collections of data. In this blog post, we explored different methods of performing this task in C++ and Python. Keep in mind that the choice of which method to use may depend on the specific requirements of your programming project.

#programming #vectors