How do I use multiset in C++?

How do I use multiset in C++?

A multiset in C++ is a type of associative container that allows duplicate elements. You can include the header <set> and use the std::multiset class.

Can you show me a simple example of how to declare and initialize a multiset?

Sure! Here's a simple example:

#include <iostream>
#include <set>

int main() {
    std::multiset<int> mySet;
    mySet.insert(1);
    mySet.insert(2);
    mySet.insert(2);
    mySet.insert(3);
    return 0;
}

How do I iterate through the elements of a multiset?

You can use an iterator to go through the elements. Here's how:

for (auto it = mySet.begin(); it != mySet.end(); ++it) {
    std::cout << *it << " ";
}

What are the advantages of using multiset over a regular set?

The main advantage of a multiset is that it allows duplicate values, which is useful when you need to count occurrences of elements.