How Can I Efficiently Create a Subvector from a Vector in C ?

Creating a Subvector from a Vector Effectively

In C , you may encounter scenarios where you need to extract a portion of a vector into a separate subvector. Let's discuss the most efficient technique for accomplishing this.

The provided code snippet suggests using vector::const_iterator to specify the start (first) and end (last) positions of the subvector within the original myVec. Subsequently, a new vector, newVec, is constructed using the range specified by first and last.

It's important to note that this operation has a time complexity of O(N), where N is the size of the original vector. This is unavoidable, as it requires copying elements from the source vector into the destination vector.

For this particular task, utilizing a vector is the preferred choice within the STL. Alternative data structures, such as linked lists, would not offer any significant performance advantages in this scenario.

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