Iterator Error in Vector Processing

What went wrong: The original code attempted to iterate over the vector directly, which moves the ownership of the vector into the loop, causing a borrow error when trying to use the vector again.

The fix: Iterate over a reference to the vector (&vec) to avoid moving ownership. Additionally, clone the vector before passing it to the function to retain the original vector for further use.

Remember: When iterating over a vector, use references to avoid moving ownership unless the vector is no longer needed.