C++: Multiset vs Vector

What are the main differences between std::multiset and std::vector in C++?

The main differences are in how they store elements and their performance characteristics. std::vector is a dynamic array, while std::multiset is a sorted associative container that allows duplicate elements.

When should I use std::multiset instead of std::vector?

Use std::multiset when you need to maintain a sorted collection of elements and allow duplicates. It's great for scenarios where you frequently need to search for elements.

Are there any performance implications when using std::multiset?

Yes, std::multiset has logarithmic time complexity for insertions and deletions, while std::vector has constant time complexity for insertions at the end but linear time for insertions in the middle.

Can I access elements in std::multiset like I do in std::vector?

No, std::multiset does not support direct access by index like std::vector. You need to iterate through it or use iterators to access elements.