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Understanding the Difference: erase vs. remove
In the realm of C programming, std::erase and std::remove are two distinct functions that serve different purposes when it comes to modifying containers. While both functions can be used to eliminate elements from a container, they differ in their behavior.
Std::remove: Rearranging Elements vs. Deletion
Std::remove is an algorithm that operates on a range of elements and rearranges them within the container. It does not directly delete any elements but moves non-matching elements over matching ones. This process creates a cluster of matching elements at the beginning of the sequence and non-matching elements at the end.
Std::erase: Deleting Elements
On the other hand, std::erase is a function that removes specified elements from a container, effectively reducing its size. It takes a range of iterators as arguments and deletes all elements within that range, including the elements marked for removal.
Understanding the Output
In the code example provided, the following observations can be made:
Additional Notes on Std::remove
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